Time Current Curves TD012034EN Effective September 2015 Contents Description Page Catalog Number Selection 4 Digitrip 310+ Electronic Trip Unit Types KD, CKD, HKD, CHKD Long Delay (LD) and Short Delay (SD) with Flat Response and Override (125A) (LSI, LSIG, ALSI, ALSIG) TD012014EN 7 Long Delay (LD) and Short Delay (SD) with Flat Response and Override (250A, 400A) (LSI, LSIG, ALSI, ALSIG) TD012007EN 8 Long Delay Response and Short Delay with I 2 T Response Curve and Override (125A) (LS, LSG) TD012015EN 9 Long Delay Response and Short Delay with I 2 T Response Curve and Override (250A, 400A) (LSI, LSIG, ALSI, ALSIG) TD012008EN 10 Types KDC (Current Limiting) Long Delay (LD) and Short Delay (SD) with Flat Response and Override (125A) (LSI, LSIG, ALSI, ALSIG) TD012016EN 11 Long Delay (LD) and Short Delay (SD) with Flat Response and Override (240A, 400A) (LSI, LSIG, ALSI, ALSIG) TD012012EN 12 Long Delay Response and Short Delay with I 2 T Response Curve and Override (125A) (LS, LSG) TD12017EN 13 Long Delay Response and Short Delay with I 2 T Response Curve and Override (250A, 400A) (LS, LSG) TD012013EN 14 Types KD, CKD, HKD, CHKD, and KDC (125A, 250A and 400A) Ground Fault Delay Response Curve (LSG, LSIG, ALSIG) TD012009EN 15 Remote Maintenance Mode Setting (ALSI, ALSIG) TD012010EN 16 KT Thermal/Magnetic Trip Unit Types KDB, KD, HKD SC-4118-87B 17 Types KDC 2-, 3-, and 4-pole SC-4119-87B 18 Let-through Curves FDC, JDC, KDC, and LDC---240V AD-29-166A 19 FDC, JDC, KDC, and LDC---480V AD-29-166B 20 FDC, JDC, KDC, and LDC---600V AD-29-166C 21 Series C K-Frame 70-400A, 240-600V
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Time Current Curves TD012034EN Effective September 2015
Note:Time/Current characteristic curves for Series C K-frame circuit breakers--voltages shown in curve headingsare maximum at which the breaker may be applied . Interrupting capacity of individual breaker is tabulatedon each curve .
Note:The following curves are UL489 Listed for use in North America .The following circuit breakers are derived from Eaton, Westinghouse, or Cutler-Hammer history .
Time Current Curves are engineering reference documents for application and coordination purposes only . For field testing molded case circuit breakers, refer to NEMA AB 4 guidelines .
2 EATON www.eaton.com
Proof 9 — November 12, 2015 4:54 PM
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
3EATON www.eaton.com
otee:N Unless noted below, all curves remain unchanged from their prior revision .
Revision Curve Number Page Date
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
Instantaneous curves adjusted
to meet specifications.
ZSI times added to short delay curves.
7–14
7–14
9 - 2015
9 - 2015
4
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
KES 3 400 LSIG ZG
Trip Unit Type
KES Number of Poles
34
= Three-pole= Four-pole
Ampere Rating
125250400
Feature
BlankB20B21ZG
= No feature= High load alarm= Ground fault alarm and trip= Zone selective interlocking
Trip Unit
LSLSILSGLSGB22LSIGLSIGB22ALSIALSIGALSIGB22
= 310+ Electronic LS= 310+ Electronic LSI= 310+ Electronic LSG= LS(A), GFA, no trip= 310+ Electronic LSIG= LSI(A), GFA, no trip= LSI with Maintenance Mode= LSIG with Maintenance Mode= ALSI(A) with Maintenance Mode and GFA, no trip
This information is presented only as an aid to understanding catalog numbers .It is not to be used to build catalog numbers for circuit breakers or trip units .
K-Frame with 310+ Electronic Trip Unit Technology
KDB 3 400 F T36 ZG W
Performance at 480 Vac
KDBHKDB
= 35 kAIC= 65 kAIC
Number of Poles
3 = Three-pole Ampere Rating
125250400
Frame DesignationFeature
BlankB20B21ZG
= No feature= High load alarm= Ground fault alarm and trip= Zone selective interlocking
Terminal
W = No terminals
Trip Unit
T33T32T35T35B22T36T36B22T38TT3939B22
= 310+ Electronic LS= 310+ Electronic LSI= 310+ Electronic LSG= 310+ Electronic LS(A), GFA, no trip= 310+ Electronic LSIG= 310+ Electronic LSI(A), GFA, no trip= 310+ Electronic ALSI with Maintenance Mode= 310+ Electronic ALSIG with Maintenance Mode= 310+ Electronic ALSI(A) with Maintenance Mode and GFA, no trip
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
KD 3 400 F
Number of Poles
234
= Two-pole= Three-pole= Four-pole
Circuit Breaker/Frame Type
DKKDKDBHKDKDC
Suffix
Circuit Breaker/Frame Ampere
Rating
100125150175200225250300350400
CE
FKVWXYBlank
= Cooper terminals= 50% protected neutral pole (four-pole electronic trip unit circuit breaker only)= Frame only= High-magnetic molded-case switch= 500 calibration (thermal-magnetic trip units only)= Without terminals= Load terminals only= Line side terminals only= Standard load and line side terminals
K-Frame with Thermal-Magnetic Trip Unit Technology
Table 4 . Thermal-Magnetic Breaker/Frame
KT 3 400 T
Number of Poles
234
= Two-pole= Three-pole= Four-pole
Trip Unit Type
KT
Suffix
Circuit Breaker/Frame Ampere
Rating
100125150175200225250300350400
T = Trip unit only= Thermal-magnetic
Table 5 . Thermal-Magnetic Trip Unit
KD 3 125 T5 7 W
Circuit Breaker/Frame Type
KDHKDKDCCKDCHKD
Number of Poles
3 = Three-pole Circuit Breaker/FrameAmpere Rating
125250400
Trip ModelTrip Type
= LSI= LSIG= LSIA
Suffix
W = No terminals= Model 550= Model 1050
T5T10
267
K-Frame with OPTIM 550/1050 Trip Unit Technology
Table 6 . OPTIM 550/1050 Circuit Breaker/Frame
6
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
E
GF
HA
B
DC
IR∑6
87
102
3
54
12 Ii
Isd (xIR)SHORT
12
2015
242
4
107
tR (s)LONG
REMOTE MMSTATUSPush to Trip
68C 4081 H10
120
300Inst.tsd (ms)SHORT
TEST / ALARM
Clear
WindowClear
WindowE
GF
HA
B
DC
IR∑6
87
102
3
54
12 Ii
Isd (xIR)SHORT
12
2015
242
4
107
tR (s)LONG
REMOTE MMSTATUSPush to Trip
68C 4081 H12
Ig (xIn)GND
.8 1.0
.2.3
.6.4
TEST / ALARM
N
PO
QJ
K
ML
Rsd */ t tg (ms)
SHORT / GND
Clear
WindowClear
Window
E
GF
HA
B
DC
IR∑6
87
102
3
54
12 Ii
Isd (xIR)SHORT
12
2015
242
4
107
tR (s)LONG
TEST / ALARMSTATUSPush to Trip
68C 4081 H13
Clear
WindowClear
Window
E
GF
HA
B
DC
IR∑6
87
102
3
54
12 Ii
Isd (xIR)SHORT
12
2015
242
4
107
tR (s)LONG
STATUSPush to Trip
68C 4081 H14
120
300Inst.tsd (ms)SHORT
TEST / ALARM
Clear
WindowClear
Window E
GF
HA
B
DC
IR∑6
87
102
3
54
12
Isd (xIR)SHORT
12
2015
242
4
107
tR (s)LONG
STATUSPush to Trip
68C 4081 H24
Ig (xIn)GND
.8 1.0
.2.3
.6.4
TEST / ALARM
N
PO
QJ
K
ML
Rsd */ t tg (ms)
SHORT / GND
Clear
WindowClear
Window
E
GF
HA
B
DC
IR∑6
87
102
3
54
12
Isd (xIR)SHORT
12
2015
242
4
107
tR (s)LONG
STATUSPush to Trip
68C 4081 H23
120
300Inst.tg (ms)
GND
Ig (xIn)GND
.8 1.0
.2.3
.6.4
TEST / ALARM
Clear
WindowClear
Window
LS
LSI
ALSI (With Maintenance Mode)
LSG
LSIG
ALSIG (With Maintenance Mode)
Figure 1 . Digitrip 310+ Namplates
➅
➄
➆
➀
➃
➇ ➂ ➁
Figure 2 . Front View of L-Frame Type OPTIM Trip Unit (K and N-Frame Designs are Similar)
1 Push-to-Trip Button
2 Mode of Trip/Alarm LEDs
3 Battery Test Pushbutton/LED
4 Automatic Trip Indicator Reset Pushbutton
5 Unit Status LED
6 INCOM Transmit LED (Model 550 requires field IMPACC kit)
7 Battery Compartment/Pro-gramming Port Access Cover
8 Rating Plug
7
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
10,0
00
.1
.2
.3
.4
.5
.01
1000
5000
4000
3000
2000
20,0
00
.001
TIM
E IN
SEC
ON
DS
Current in Amps
30,0
00
40,0
0050
,000
100,
000
1
.02
.03
.04
.05Fixed InstantaneousOverride
InterruptingRatingDeterminesEnd ofCurve
.01
1
2
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
.02
.03
.04
.05
.06
.07
.08.09
.1
.2
.3
.4
.5
.6.7.8.91
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
ETU
NIM 1
SR
UO
H 2S
DN
OCES
NI EMI T
RU
OH 1
Maximum Total Clearing Time
Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.
1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .
2 . Application frequency is 50/60 Hertz .
3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .
5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .
6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .
8 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 3000A (Tolerance ±15%) .
9 . Maximum clearing time when using zone selective interlocking is 62ms .
(Ir) / (In) 125A
ABCDE F G H
55A60A70A80A90A100A110A125A
Figure 3 . Digitrip 310+ Trip Units (125A), Long Delay and Short Delay with Flat Response and Override (LSI, LSIG, ALSI, ALSIG) – Curve Number TD012014EN, September 2015
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .
Fixed InstantaneousOverride 4400A
InterruptingRatingDeterminesEnd ofCurve
10,0
00
.1
.01
1000
5000
4000
3000
2000
20,0
00
.001
TIM
E IN
SE
CO
ND
S
Current in Amps
30,0
00
40,0
00
50,0
00
100,
000
1
.02
.03
.04
.05
.2
.3
.4
.5
.01
1
2
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
.02
.03
.04
.05
.06
.07
.08.09
.1
.2
.3
.4
.5
.6.7.8.91
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
ETU
NIM 1
SR
UO
H 2S
DN
OC
ES
NI E
MI TR
UO
H 1
Maximum Total Clearing Time
Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.
Shown at 6 x IR2, 4, 7, 15, 24
seconds +0/–30%
7
2
Available Short DelayPick Up Settings
2–8, 10, 12 x IR ±5% (See Note 7)
2
Current in Multiples of (Ir)
Current in Multiples of (Ir)
1 2 3 4 5 7 10 03 02 05 04 70 7. 5.
1 2 3 4 5 7 10 03 02 .5 .7
8
12
Minimum TotalClearing Time
4
.4
.15
.24
63
1.15
7
.
5
.
300 ms(P, Q, R)
120 ms(M, N, O)
Inst.(J, K, L)
10
1
8
Time Current Curves TD012034ENEffective September 2015
1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .
2 . Application frequency is 50/60 Hertz .
3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .
5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .
6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .
8 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 4400A (Tolerance ±15%) . For IR = In = 400A, the fixed instantaneous hardware override takes precedence over the SDPU setting of 12 x IR .
9 . Maximum clearing time when using zone selective interlocking is 62ms .
Figure 4 . Digitrip 310+ Trip Units (250A and 400A), Long Delay and Short Delay with Flat Response and Override (LSI, LSIG, ALSI, ALSIG) - Curve Number TD012007EN, September 2015
Interrupting Rating
Available Sensors
Rated Amperes
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .
Fixed InstantaneousOverride 4400A
InterruptingRatingDeterminesEnd ofCurve
10,0
00
.1
.01
1000
5000
4000
3000
2000
20,0
00
.001
TIM
E IN
SE
CO
ND
S
Current in Amps
30,0
00
40,0
00
50,0
00
100,
000
1
.02
.03
.04
.05
.2
.3
.4
.5
.01
1
2
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
.02
.03
.04
.05
.06
.07
.08.09
.1
.2
.3
.4
.5
.6.7.8.91
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
ETU
NIM 1
SR
UO
H 2S
DN
OC
ES
NI E
MI TR
UO
H 1
Maximum Total Clearing Time
Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.
Shown at 6 x IR2, 4, 7, 15, 24
seconds +0/–30%
7
2
Available Short DelayPick Up Settings
2–8, 10, 12 x IR ±5% (See Note 7)
2
Current in Multiples of (Ir)
Current in Multiples of (Ir)
1 2 3 4 5 7 10 03 02 05 04 70 7. 5.
1 2 3 4 5 7 10 03 02 .5 .7
8
12
Minimum TotalClearing Time
4
.4
.15
.24
63
1.15
7
.
5
.
300 ms(P, Q, R)
120 ms(M, N, O)
Inst.(J, K, L)
10
1
9
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
.01
1
2
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
.02
.03
.04
.05
.06
.07
.08.09
.1
.2
.3
.4
.5
.6.7.8.91
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
ETU
NIM 1
SR
UO
H 2S
DN
OC
ES
NI E
MI TR
UO
H 1
Maximum Total Clearing Time
Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.
1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .
2 . Application frequency is 50/60 Hertz .
3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .
5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .
6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .
8 . Short Delay I2T band has a tolerance of ±15% .
9 . Breakpoint back to FLAT response occurs at 8x IR for upper line of the I2T curve .
10 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 3000A (Tolerance ±15%) .
11 . Maximum clearing time when using zone selective interlocking is 62ms .
Figure 5 . Digitrip 310+ Trip Units (125A), Long Delay Response and Short Delay with I2T Response Curve and Override (LS, LSG) - TD012015EN, September 2015
Available Sensors
Rated Amperes
Interrupting Rating
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .
10
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
.01
1
2
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
.02
.03
.04
.05
.06
.07
.08.09
.1
.2
.3
.4
.5
.6.7.8.91
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
ETU
NIM 1
SR
UO
H 2S
DN
OC
ES
NI E
MI TR
UO
H 1
Maximum Total Clearing Time
Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.
1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .
2 . Application frequency is 50/60 Hertz .
3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .
5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .
6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .
8 . Short Delay I2T band has a tolerance of ±15% .
9 . Breakpoint back to FLAT response occurs at 8x IR for upper line of the I2T curve .
10 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 4400A (Tolerance ±15%) . For IR = In = 400A, the fixed instantaneous hardware override takes precedence over the SDPU setting of 12 x IR .
11 . Maximum clearing time when using zone selective interlocking is 62ms .
Figure 6 . Digitrip 310+ Trip Units (250A and 400A), Long Delay Response and Short Delay with I2T Response Curve and Override (LS, LSG) – Curve Number TD012008EN, September 2015
Interrupting Rating
Available Sensors
Rated Amperes
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .
11
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
.02
.03
.04
.05
10,0
00
.1
.01
5000
4000
3000
2000
20,0
00
.001
TIM
E IN
SE
CO
ND
S
Current in Amps
30,0
00
40,0
0050
,000
100,
000
1
200,
000
Fixed InstantaneousOverride
InterruptingRatingDeterminesEnd ofCurve
600 Vac
480 Vac
240 Vac
MaximumInterruptingTime
.01
1
2
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
.02
.03
.04
.05
.06
.07
.08.09
.1
.2
.3
.4
.5
.6.7.8.91
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
ETU
NIM 1
SR
UO
H 2S
DN
OC
ES
NI E
MI TR
UO
H 1
Maximum Total Clearing Time
Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.
1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .
2 . Application frequency is 50/60 Hertz .
3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .
5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .
6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .
8 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 3000A (Tolerance ±15%) .
9 . Maximum clearing time when using zone selective interlocking is 62ms .
(Ir) / (In) 125A
ABCDE F G H
55A60A70A80A90A100A110A125A
Figure 3 . Digitrip 310+ Trip Units (125A), Long Delay and Short Delay with Flat Response and Override (LSI, LSIG, ALSI, ALSIG) – Curve Number TD012016EN, September 2015
UL/CSA rms Sym . kA, 50/60 Hz
KDC 200 100 65
240V 480V 600VBreaker Type
IEC 60947-2 rms Sym . kA, 50/60 Hz
KDC 200 100 50
240V 380V 415VBreaker Type
Available Sensors
Rated Amperes
Interrupting Rating
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .
12
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
Series CK-Frame
.02
.03
.04
.05
10,0
00
.1
.01
5000
4000
3000
2000
20,0
00
.001
TIM
E IN
SE
CO
ND
S
Current in Amps
30,0
00
40,0
0050
,000
100,
000
1
200,
000
Fixed InstantaneousOverride
InterruptingRatingDeterminesEnd ofCurve
600 Vac
480 Vac
240 Vac
MaximumInterruptingTime
.01
1
2
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
.02
.03
.04
.05
.06
.07
.08.09
.1
.2
.3
.4
.5
.6.7.8.91
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
ETU
NIM 1
SR
UO
H 2S
DN
OC
ES
NI E
MI TR
UO
H 1
Maximum Total Clearing Time
Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.
1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .
2 . Application frequency is 50/60 Hertz .
3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .
5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .
6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .
8 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 4400A (Tolerance ±15%) . For IR = In = 400A, the fixed instantaneous hardware override takes precedence over the SDPU setting of 12 x IR .
9 . Maximum clearing time when using zone selective interlocking is 62ms .
Figure 4 . Digitrip 310+ Trip Units (250A and 400A), Long Delay and Short Delay with Flat Response and Override (LSI, LSIG, ALSI, ALSIG) - Curve Number TD012012EN, September 2015
Interrupting Rating
Available Sensors
Rated Amperes
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .
13
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
.01
1
2
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
.02
.03
.04
.05
.06
.07
.08.09
.1
.2
.3
.4
.5
.6.7.8.91
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
ETU
NIM 1
SR
UO
H 2S
DN
OC
ES
NI E
MI TR
UO
H 1
Maximum Total Clearing Time
Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.
1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .
2 . Application frequency is 50/60 Hertz .
3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .
5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .
6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .
8 . Short Delay I2T band has a tolerance of ±15% .
9 . Breakpoint back to FLAT response occurs at 8x IR for upper line of the I2T curve .
10 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 3000A (Tolerance ±15%) .
11 . Maximum clearing time when using zone selective interlocking is 62ms .
UL/CSA rms Sym . kA, 50/60 Hz
KDC 200 100 65
240V 480V 600VBreaker Type
IEC 60947-2 rms Sym . kA, 50/60 Hz
KDC 200 100 50
240V 380V 415VBreaker Type
(Ir) / (In) 125A
ABCDE F G H
55A60A70A80A90A100A110A125A
Figure 5 . Digitrip 310+ Trip Units (125A), Long Delay Response and Short Delay with I2T Response Curve and Override (LS, LSG) - TD012017EN, September 2015
Available Sensors
Rated Amperes
Interrupting Rating
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .
14
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
.01
1
2
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
.02
.03
.04
.05
.06
.07
.08.09
.1
.2
.3
.4
.5
.6.7.8.91
3
4
5
6789
10
20
30
40
50
60708090
100
1000900800700600
500
400
300
200
2000
3000
4000
5000
6000700080009000
10000
ETU
NIM 1
SR
UO
H 2S
DN
OC
ES
NI E
MI TR
UO
H 1
Maximum Total Clearing Time
Available Long Delay Time:2, 4, 7, 10, 12, 15, 20, 24 sec.
1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .
2 . Application frequency is 50/60 Hertz .
3 . There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .
5 . The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .
6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
7 . The Short Delay Pick Up has 9 settings/positions, 2–8 and 10, 12 IR .
8 . Short Delay I2T band has a tolerance of ±15% .
9 . Breakpoint back to FLAT response occurs at 8x IR for upper line of the I2T curve .
10 . For high fault current levels, an additional fixed instantaneous hardware override is provided at 4400A (Tolerance ±15%) . For IR = In = 400A, the fixed instantaneous hardware override takes precedence over the SDPU setting of 12 x IR .
11 . Maximum clearing time when using zone selective interlocking is 62ms .
Figure 6 . Digitrip 310+ Trip Units (250A and 400A), Long Delay Response and Short Delay with I2T Response Curve and Override (LS, LSG) – Curve Number TD012013EN, September 2015
Interrupting Rating
Available Sensors
Rated Amperes
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .
15
Time Current Curves TD012034ENEffective September 2015
Trip Unit Types: 35 (LSG), 36 (LSIG), and 39 (ALSIG)
Ground fault delay response notes:
1 . Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .
2 . Application frequency is 50/60 Hertz .
3 . Trip units are suitable for functional field testing with test kit CAT # MTST230V .
4 . For testing information, please contact Eaton .
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .
16
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
Current in Multiples of Rating ( )In
.01
2
.02
.03
.04
.05
.06
.07
.08
.09.1
.2
.3
.4
.5
.6
.7
.8
.91
3
4
5
6789
10
1 2 3 4.5 .6 .7 .8 .9 10 20 30 40 505 6 7 8 9
2.5
Maintenance Mode Trip
TIM
EIN
SE
CO
ND
S
Applicationdeterminesend of curve
Notes:
1. The Maintenance Mode feature must be ENABLED via application of 24 Vdc for these curves to apply. The blue LED is lit when in Maintenance Mode.
2. The end of the curve is determined by the interrupting rating of the circuit breaker.
3. Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current.
4. Nominal Va lues (Pickup) (Tolerance is ±15%) 2.5 x In.
5. The total clearing times shown are conservative and consider the maximum response time of the trip unit, the circuit breaker opening, and the interruption of the current in the worst case conditions such as: maximum rated voltages, single-phaseinterruption, and minimum power factor. Faster clearing times are possibledepending on the specific system conditions.
Contact Eaton for additional information.
Digitrip 310+ Circuit Breaker Time/Current Curves
Maintenance Mode Setting
Series C K-Frame Trip Unit Nameplates
E
GF
HA
B
DC
IR∑6
87
102
3
54
12 Ii
Isd (xIR)SHORT
12
2015
242
4
107
tR (s)LONG
REMOTE MMSTATUSPush to Trip
68C 4081 H10
120
300Inst.tsd (ms)SHORT
TEST / ALARM
Clear
WindowClear
Window
ALSI (With Maintenance Mode)
E
GF
HA
B
DC
IR∑6
87
102
3
54
12 Ii
Isd (xIR)SHORT
12
2015
242
4
107
tR (s)LONG
REMOTE MMSTATUSPush to Trip
68C 4081 H12
Ig (xIn)GND
.8 1.0
.2.3
.6.4
TEST / ALARM
N
PO
QJ
K
ML
Rsd */ t tg (ms)
SHORT / GND
Clear
WindowClear
Window
ALSIG (With Maintenance Mode)
Figure 8 . Maintenance Mode Setting (ALSI, ALSIG) - Curve Number TD012010EN, February 2014
Left Side of Breaker
YellowBlack
Blue
Red
24 Vdc
Relay Wiring
NOC
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .
17
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
0.001
0.010
0.100
1.000
10.000
100.000
1000.000
10,000.000
10 100 1000 10,000 100,000 1,000,000
Tim
e in
Sec
onds
Current in Percent of Breaker Trip Unit Rating (In)
Maximum Minimum
Maximum Single-Pole Trip Times at 25°C
Interruption Rating Determines End of Curve
+30%
/ –2
0%
+30%
/ –2
0%
Maximum Minimum
Adjustable Magnetic Trip, 5x - 10x
10 100 1000
Current in Percent of Breaker Trip Unit Rating (In)
Figure 9 . Thermal-Magnetic Series C Types KDB, KD, HKD Circuit Breakers - Curve Number SC-4118-87B, February 2014
For application and coordination purposes only . Based on cold start at rated ambient temperature . Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series . Tested in open air .
Catalog Types: KDC Current Limiting Circuit Breakers, 2-, 3- and 4-Pole
For application and coordination purposes only . Based on 40°C ambient, cold starConnected with four (4) feet of rated wire (60°C up to 125 amps . 75°C above 125 amps) per terminal . Tested in open air with current in all poles . Instantaneous calibration based on single-pole tests .
Maximum Voltage: 600 Vac (60 Hz) – 250 Vdc
UL/CSA rms Sym . kA, 50/60 Hz
KDC 200 100 65 22
240V 480V 600V 250VdcBreaker Type
100-400
Instantaneous Trip Amperes
Breaker Rating
Rated Amperes (In)
500 to 1000% of trip unit rating (See Figure Below)(Dc values are approximately 40% higher)
Single-pole test data at 25°C based on NEMA Procedures (AB 4) for verifying performance of molded-case circuit breakers .
Note: For additional information on the trip unit, see IL 29C603 .
Figure 10 . Thermal-Magnetic Series C Type KDC Circuit Breakers - Curve Number SC-4119-87B, February 2014
19
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
Ava
ilab
le S
ho
rt C
ircu
it C
urr
ent,
kA
rm
s
Peak Let-Through I2t, A2 sec
LD
C36
00
KD
C34
00
JDC
3250
FD
C32
25
1000 kA
500 kA
100 kA
50 kA
10 kA
5 kA
10,0
00,0
00
5,00
0,00
0
1,00
0,00
0
500,
000
100,
000
10,0
00
1 kA
Ava
ilab
le S
ho
rt C
ircu
it C
urr
ent,
kA
rm
s
Peak Let-Through Current, kA
LD
C36
00
KD
C34
00
JDC
3250
FD
C32
25
50 k
A
5 kA
10 k
A
100
kA
100 kA
500 kA
1000 kA
5 kA
50 kA
10 kA
1 kA
avai
l. Ip
for
1st
sym
m. 1
/2 c
ycle
1 kA
Figure 11 . Peak Let-Through I2t Curve — 240 V - Curve Number AD-29-166A
Figure 12 . Peak Let-Through Current Curve — 240 V - Curve Number AD-29-166A
Ava
ilab
le S
ho
rt C
ircu
it C
urr
ent,
kA
rm
s
Peak Let-Through I2t, A2 sec
LD
C36
00
KD
C34
00
JDC
3250
FD
C32
25
1000 kA
500 kA
100 kA
50 kA
10 kA
5 kA
1 kA
10,0
00,0
00
5,00
0,00
0
1,00
0,00
0
500,
000
100,
000
Ava
ilab
le S
ho
rt C
ircu
it C
urr
ent,
kA
rm
s
Peak Let-Through Current, kA
LD
C36
00
KD
C34
00
JDC
3250
FD
C32
25
1000 kA
500 kA
100 kA
50 kA
10 kA
5 kA
1 kA
avai
l. Ip
for
1st
sym
m. 1
/2 c
ycle
50 k
A
5 kA
10 k
A
100
kA
1 kA
20
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
Figure 13 . Peak Let-Through I2t Curve — 480 V - Curve Number AD-29-166B
Figure 14 . Peak Let-Through Current — 480 V - Curve Number AD-29-166B
Ava
ilab
le S
ho
rt C
ircu
it C
urr
ent,
kA
rm
s
Peak Let-Through I2t, A2 sec
LD
C36
00
KD
C34
00
JDC
3250
FD
C31
50
100 kA
50 kA
10 kA
5 kA
1 kA
10,0
00,0
00
5,00
0,00
0
1,00
0,00
0
500,
000
100,
000
Ava
ilab
le S
ho
rt C
ircu
it C
urr
ent,
kA
rm
s
Peak Let-Through Current, kA
LD
C36
00
KD
C34
00
JDC
3250
FD
C31
50
avai
l. Ip
for
1st
sym
m. 1
/2 c
ycle
100 kA
50 kA
10 kA
5 kA
1 kA
50 k
A
5 kA
10 k
A
100
kA
1 kA
21
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
Figure 15 . Peak Let-Through I2t — 600 V - Curve Number AD-29-166C
Figure 16 . Peak Let-Through Current — 600 V - Curve Number AD-29-166C
.01 .01
10,000
5,000
3,000
2,000
1,000
500
300
200
100
50
30
20
10
5
3
2
1 11
.5 5.5.
.3 3.3.
.2 2.2.
.1 1.1.
.05 .05
.03 .03
.02 .02
ET
UNI
M 1
RU
OH
1S
RU
OH
2S
DN
OC
ES
NIE
MIT
SD
NO
CE
SNI
EMI
T
500
600
700
800
9002 3 20 304 5 6 7 40 50 60 70 80 90 100
300
100.8
0.9 1
0.5
0.6
0.7 8 9
20 30 40 50 60 70 80 900.5
2 3 5 6 7 108 9
200
400
CURRENT IN MULTIPLES OF LONG DELAY SETTING I
CURRENT IN MULTIPLES OF LONG DELAY SETTING I
1000
2000
3000
4000
5000
6000
7000
8000
9000
10,0
00
0.8
0.7
0.6
0.9
1
MinimumTotalClearingTime
MaximumTotalClearingTime
AvailableLong DelayTime SettingsShown @ 6 x I r
2-24 seconds +0 ⁄-30%in 0.1 secondincrements
AvailableShort DelayPickup Settings1.5 to 8 x Ir5% in 0.1
increments
Available I t SlopeShort Delay Time Settings0.1 to 0.5 seconds in0.01 second increments
2
Available Long DelayPickup Settings (I )r0.4 to 1 x I = In rin 0.01 increments
.5
.3
.1
r
r
4
7
2
24
100
ApplicationDeterminesEnd of Curve
+-
1.15
Figure 17 . Digitrip Optim Long Delay I2T and Short Delay I2T Response - Curve Number SC-6924-98, May 1998
1 For field testing primary injection methods, follow NEMA AB4 guidelines .
2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .
3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
5 This curve is shown as a multiple of the Long Delay Pick-up Setting, (Ir) . This Ir setting is programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer, or a Remote PC (IMPACC System) .
6 The Long Delay Pick-up Point (indicated by a flashing LED on the product) nominally occurs above 115% of the Ir current, with a +/- 5% tolerance . The short delay settings have conventional 100%, +/- 5% as the pickup points .
7 For additional curve tolerances contact Eaton .
8 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .
1 For field testing primary injection methods, follow NEMA AB4 guidelines .
2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .
3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
5 This curve is shown as a multiple of the Long Delay Pick-up Setting, (Ir) . This Ir setting is programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer, or a Remote PC (IMPACC System) .
6 The Long Delay Pick-up Point (indicated by a flashing LED on the product) nominally occurs above 115% of the Ir current, with a +/- 5% tolerance . The short delay settings have conventional 100%, +/- 5% as the pickup points .
7 For additional curve tolerances contact Eaton .
8 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .
Rating Plug Catalog Number
Long DelayPickup (Ir) Range0 .4 to 1 x InAmperes
Short DelayPickup Range1 .5 to 8 x IrAmperes
Figure 18 . Digitrip Optim Long Delay I2T and Short Delay Flat Response - Curve Number SC-6925-98, May 1998
Interrupting Rating
23
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
Proof 9 — November 12, 2015 4:54 PM
Rating Plug Ampere Rating(In)
.01 .01
10,000
5,000
3,000
2,000
1,000
500
300
200
100
50
30
20
10
5
3
2
1 11
.5 .5.5
.3 .3.3
.2 .2.2
.1 .1.1
.05 .05
.03 .03
.02 .02
ET
UNI
M 1
RU
OH
1S
RU
OH
2S
DN
OC
ES
NIE
MIT
SD
NO
CE
SNI
EMI
T
500
600
700
800
9002 3 20 304 5 6 7 40 50 60 70 80 90 100
100
300
100.8
0.9 1
0.5
0.6
0.7 8 9
20 30 40 50 60 70 80 900.5
2 3 5 6 7 108 9
200
400
CURRENT IN MULTIPLES OF LONG DELAY SETTING I
CURRENT IN MULTIPLES OF LONG DELAY SETTING I
1000
2000
3000
4000
5000
6000
7000
8000
9000
10,0
00
0.8
0.7
0.6
0.9
1
ApplicationDeterminesEnd of Curve
MinimumTotalClearingTime
MaximumTotalClearingTime
AvailableLong DelayTime SettingsShown @ 6 x I r1-5 seconds +10 ⁄-40%in 0.1 secondincrements
AvailableShort DelayPickup Settings1.5 to 8 x Ir5% in 0.1
increments
Available FlatShort Delay Time Settings0.1 to 0.5 secondsin 0.01 second increments
Available Long DelayPickup Settings (I )r0.4 to 1 x I = In rin 0.01 increments
1 For field testing primary injection methods, follow NEMA AB4 guidelines .
2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .
3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
5 This curve is shown as a multiple of the Long Delay Pick-up Setting, (Ir) . This Ir setting is programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer, or a Remote PC (IMPACC System) .
6 The Long Delay Pick-up Point (indicated by a flashing LED on the product) nominally occurs above 115% of the Ir current, with a +/- 5% tolerance . The short delay settings have conventional 100%, +/- 5% as the pickup points .
7 For additional curve tolerances contact Eaton .
8 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .
Figure 19 . Digitrip Optim Long Delay I4T and Short Delay Flat Response - Curve Number SC-6926-98, May 1998
1 For field testing primary injection methods, follow NEMA AB4 guidelines .
2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .
3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
5 The instantaneous pick up settings are +/- 10% .
6 For additional curve tolerances contact Eaton .
7 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .
1 For field testing primary injection methods, follow NEMA AB4 guidelines .
2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .
3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
5 The instantaneous pickup settings are +/- 10% .
6 For additional curve tolerances contact Eaton .
7 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .
1 For field testing primary injection methods, follow NEMA AB4 guidelines .
2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .
3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
5 The instantaneous pickup settings are +/- 10% .
6 For additional curve tolerances contact Eaton .
7 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .
1 For field testing primary injection methods, follow NEMA AB4 guidelines .
2 Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series .
3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
4 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
5 The ground fault pickup settings are +/- 10% .
6 For additional curve tolerances contact Eaton .
7 Total clearing times shown include the response times of the trip unit, the breaker opening, and the quenching of the arcing current .
125 25 - 125250 50 - 250400 80 - 400
Maximum Ampere Rating
Available Ground Fault RangesGround FaultPickup Range0 .2 to 1 .0 x Is (Current Sensor Frame Rating)Amperes
UL/CSA rms Sym . kA, 50/60 Hz
KD, CKD 65 35 25HKD, CHKD 100 65 35KDC 200 100 50
240V 480V 600VBreaker Type
Interrupting Rating
Figure 23 . Digitrip Optim Ground Fault Trip or Ground Fault Alarm Only - Curve Number SC-6930-98, May 1998
Catalog Types: KES3400LS, KES3400LSG Digitrip RMS 310 Trip Units for use with CircuitBreaker Types KDB, CKDB, HKDB, CHKDB, KD, HKD, CKD, and CHKD, 400A . max .
Short Delay
Engaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to TripPickup • x Ir
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6
TEST
Fixed Short Delay Time Typical Trip Unit Nameplate
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
4 Long Delay Pickup is 115% of In, +/- 5% .
Figure 26 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units,Types KES3400LS, KES3400LSG
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
32
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
3X
2XStandard Fixed
%021 - %011 gulP gnitaR
200 ms
100 ms
300 ms
5X
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5 201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
4 Long Delay Pickup is 115% of In, +/- 5% .
Figure 27 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units,Types KES3400LSI, KES3400LSIG
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
33
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
2X
Long Delay Minimum TotalClearing Time
Long Delay Maximum TotalClearing Time
Short DelayPickupSettings(Tolerance±10%)
5X
3X
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.7 .9 6 7 8 9
2010543 62 7 8 9.7 .9
CURRENT IN AMPS
.02
.03
.04
.05Fixed InstantaneousOverride 4000A
InterruptingRatingDeterminesEnd ofCurve
10,0
00
.1
.01
1000
5000
4000
3000
2000
20,0
00
.001
SECO
NDS
30,0
00
40,0
00
50,0
00
100,
000
1.15
Standard Fixed%021 - %011 gulP gnitaR
Figure 28 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units,Types KES3250LS, KES3250LSG
Catalog Types: KES3250LS, KES3250LSG Digitrip RMS 310 Units for use with CircuitBreaker Types KDB, CKDB, HKDB, CHKDB, KD, HKD, CKD, and CHKD, 250A . max .
Short Delay
Engaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to TripPickup • x Ir
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6
TEST
Fixed Short Delay Time Typical Trip Unit Nameplate
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
34
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
3X
2X
200 ms
100 ms
I
300 ms
5X
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5 201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Catalog Types: KES3250LSI, KES3250LSIG Digitrip RMS 310 Units for use with CircuitBreaker Types KDB, CKDB, HKDB, CHKDB, KD, HKD, CKD, and CHKD, 250A . max .
TEST
Short Delay
Engaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to TripPickup • x Ir Time • ms
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6300
100
INST
200
Adjustable Short Delay Time Typical Trip Unit Nameplate
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No .STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
Figure 29 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units,Types KES3250LSI, KES3250LSIG
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
35
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
2X
Long Delay Minimum TotalClearing Time
Long Delay Maximum TotalClearing Time
Short DelayPickupSettings(Tolerance ±10%)
5X
3X
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Catalog Types: KES3125LS, KES3125LSG Digitrip RMS 310 Trip Units for use with CircuitBreaker Types: KDB, HKDB, CKDB, CHKDB, KD, HKD, CKD, and CHKD, 125A . max .
Short Delay
Engaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to TripPickup • x Ir
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6
TEST
Fixed Short Delay Time Typical Trip Unit Nameplate
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 3000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
4 Long Delay Pickup is 115% of In, +/- 5% .
Figure 30 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units,Types KES3125LS, KES3125LSG
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
36
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
3X
2X
200 ms
100 ms
I
300 ms
5X
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5 201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Catalog Types: KES3125LSI, KES3125LSIG Digitrip RMS 310 Trip Units for use with CircuitBreaker Types KDB, CKDB, HKDB, CHKDB, KD, HKD, CKD, and CHKD, 125A . max .
TEST
Short Delay
Engaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to TripPickup • x Ir Time • ms
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6300
100
INST
200
Adjustable Short Delay Time Typical Trip Unit Nameplate
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No .STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 3000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
4 Long Delay Pickup is 115% of In, +/- 5% .
Figure 31 . Series C Types KD, CKD, HKD, CHKD Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3125L-SI, KES3125LSIG
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
37
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
2X
Long Delay Minimum TotalClearing Time
Long Delay Maximum TotalClearing Time
Short DelayPickupSettings(Tolerance ±10%)
5X
3X
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Catalog Types: KES3400LS, KES3400LSG Digitrip RMS 310 Trip Units for use with CircuitBreaker Type KDC, 400A . max .
Short Delay
Engaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to TripPickup • x Ir
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6
TEST
Fixed Short Delay Time Typical Trip Unit Nameplate
Available Rating Plugs
UL/CSA rms Sym . kA, 50/60 Hz
KDC 200 100 50
240V 480V 600VBreaker Type
IEC 60947-2 rms Sym . kA, 50/60 Hz
KDC 200 100 100
240V 380V 415VBreaker Type
Interrupting Rating
Notes:
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No .STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
Figure 32 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3400LS, KES3400LSG
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
38
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
3X
2X
200 ms
100 ms
300 ms
5X
me.02
.03
.04
.05Fixed InstantaneousOverride 4000A
InterruptingRatingDeterminesEnd ofCurve
10,0
00
.1
.01
5000
4000
3000
2000
20,0
00
.001
SECO
NDS
CURRENT IN AMPS
30,0
00
40,0
00
50,0
00
100,
000
1
200,
000
600 Vac
480 Vac
240 Vac
MaximumInterruptingTime
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5 201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.7 .9 6 7 8 9
2010543 62 7 8 9
Short DelayPickupSettings(Tolerance±10%)
Long Delay Minimum TotalClearing Time
Long Delay Maximum TotalClearing Time
.7 .9
I
1.15
Standard Fixed%021 - %011 gulP gnitaR
Figure 33 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3400LSI, KES3400LSIG
Catalog Types: KES3400LSI, KES3400LSIG, Digitrip RMS 310 Trip Units for use withCircuit Breaker Type KDC, 400A . max .
TEST
Short Delay
Engaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to TripPickup • x Ir Time • ms
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6300
100
INST
200
Adjustable Short Delay Time Typical Trip Unit Nameplate
Available Rating Plugs
UL/CSA rms Sym . kA, 50/60 Hz
KDC 200 100 50
240V 480V 600VBreaker Type
IEC 60947-2 rms Sym . kA, 50/60 Hz
KDC 200 100 100
240V 380V 415VBreaker Type
Interrupting Rating
Notes:
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No .STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
39
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
2X
Long Delay Minimum TotalClearing Time
Long Delay Maximum TotalClearing Time
Short DelayPickupSettings(Tolerance ±10%)
5X
3X
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Catalog Types: KES3250LS, KES3250LSG Digitrip RMS 310 Units for use with CircuitBreaker Type KDC, 250A . max .
Short Delay
Engaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to TripPickup • x Ir
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6
TEST
Fixed Short Delay Time Typical Trip Unit Nameplate
Available Rating Plugs
UL/CSA rms Sym . kA, 50/60 Hz
KDC 65 35 25
240V 480V 600VBreaker Type
IEC 60947-2 rms Sym . kA, 50/60 Hz
KDC 200 100 100
240V 380V 415VBreaker Type
Interrupting Rating
Notes:
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
Figure 34 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3250LS, KES3250LSG
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
40
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
3X
2X
200 ms
100 ms
300 ms
5X
.02
.03
.04
.05Fixed InstantaneousOverride 4000A
InterruptingRatingDeterminesEnd ofCurve
10,0
00
.1
.01
5000
4000
3000
2000
20,0
00
.001
SECO
NDS
CURRENT IN AMPS
30,0
00
40,0
00
50,0
00
100,
000
1
200,
000
600 Vac
480 Vac
240 Vac
MaximumInterruptingTime
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5 201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Catalog Types: KES3250LSI, KES3250LSIG Digitrip RMS 310 Trip Units for use withCircuit Breaker Type KDC, 250A . max .
TEST
Short Delay
Engaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to TripPickup • x Ir Time • ms
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6300
100
INST
200
Adjustable Short Delay Time Typical Trip Unit Nameplate
Available Rating Plugs
UL/CSA rms Sym . kA, 50/60 Hz
KDC 200 100 50
240V 480V 600VBreaker Type
IEC 60947-2 rms Sym . kA, 50/60 Hz
KDC 200 100 100
240V 380V 415VBreaker Type
Interrupting Rating
Notes:
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
Figure 35 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3250LSI, KES3250LSIG
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
41
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
2X
Long Delay Minimum TotalClearing Time
Long Delay Maximum TotalClearing Time
Short DelayPickupSettings(Tolerance ±10%)
5X
3X
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.7 .9 6 7 8 9
2010543 62 7 8 9.7 .9
Fixed InstantaneousOverride 3000A Interrupting
RatingDeterminesEnd ofCurve
10,0
00
.1
.01
5000
4000
3000
2000
20,0
00
CURRENT IN AMPS
30,0
00
40,0
00
50,0
00
100,
000
200,
000
600 Vac
480 Vac
240 Vac
.02
.03
.04
.05
SECO
NDS
.001
1.15
Standard Fixed%021 - %011 gulP gnitaR
Figure 26 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3125LS, KES3125LSG
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 3000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
4 Long Delay Pickup is 115% of In, +/- 5% .
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
42
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
6X
8X
4X
7X
3X
2X
200 ms
100 ms
I
300 ms
5X
.02
.03
.04
.05Fixed InstantaneousOverride 3000A
InterruptingRatingDeterminesEnd ofCurve
10,0
00
.1
.01
5000
4000
3000
2000
20,0
00
.001
SECO
NDS
CURRENT IN AMPS
30,0
00
40,0
00
50,0
00
100,
000
1
200,
000
600 Vac
480 Vac
240 Vac
MaximumInterruptingTime
TIM
E IN
SEC
ONDS
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR1
MIN
UTE
2 HO
URS
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5
.5 201054321.8.6
1.8.6CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time delay reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 3000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
4 Long Delay Pickup is 115% of In, +/- 5% .
Figure 37 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Types KES3125LSI, KES3125LSIG
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
43
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
Ground Fault Pickup Settings(Tolerance ±10% Except ±20% on 1xIG Setting)
Catalog Types: Type Digitrip RMS 310 Trip Unit for use with Circuit Breaker Types KDB,
CKDB, HKDB, CHKDB, KD, HKD, KDC, CKD, and CHKD
For use with Trip Unit Catalog NumbersKES3400LSGKES3400LSIG
TESTEngaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to Trip
Digitrip RMS 310 Trip Unit40oC
Ground Fault
Pickup • x Ig Time • ms
Short Delay
Pickup • x Ir5
73
2 8
4 6500
150
INST
3004
2
1
3 5
Ig = 80A
Notes:
Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
TESTEngaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to Trip
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6
Short Delay
Pickup • x Ir Time • ms
Ground Fault
Pickup • x Ig Time • ms
300
100
INST
200500
150
INST
3004
2
1
3 5
Ig = 80A
Figure 38 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Ground Fault Protection(KES3400LSG, KES3400LSIG)
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
44
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
Ground Fault Pickup Settings(Tolerance ±10%Except ±20% on 1xIG Setting)
Type Digitrip RMS 310 Trip Unit for use with Circuit Breaker Types KDB, CKDB, HKDB, CHKDB
KD, HKD, KDC, CKD, and CHKD
For use with Trip Unit Catalog NumbersKES3250LSGKES3250LSIG
TESTEngaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to Trip
Digitrip RMS 310 Trip Unit40oC
Ground Fault
Pickup • x Ig Time • ms
Short Delay
Pickup • x Ir5
73
2 8
4 6500
150
INST
3004
2
1
3 5
Ig = 80A
Notes:
Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
TESTEngaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to Trip
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6
Short Delay
Pickup • x Ir Time • ms
Ground Fault
Pickup • x Ig Time • ms
300
100
INST
200500
150
INST
3004
2
1
3 5
Ig = 80A
Figure 39 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Ground Fault Protection(KES3250LSG, KES3250LSIG)
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
45
Time Current Curves TD012034ENEffective September 2015
Series CK-Frame
EATON www.eaton.com
Ground Fault Pickup Settings(Tolerance ±10% Except ±30% on 2xIG Setting)
Type Digitrip RMS 310 Trip Unit for use with Circuit Breaker Types KD, HKD, KDC, CKD,and CHKD
For use with Trip Unit Catalog NumbersKES3125LSGKES3125LSIG
TESTEngaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to Trip
Digitrip RMS 310 Trip Unit40oC
Ground Fault
Pickup • x Ir Time • ms
Short Delay
Pickup • x Ir5
73
2 8
4 6500
150
INST
3004
23 5
Ig = 25A
Notes:
Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuousampere derating for ambient above 40ºC, refer to Eaton .
Digitrip RMS 310 trip units are suitable for functional field testing with test kitCat . No . STK2 . For field testing using primary injection methods, follow NEMApublication AB-4 .
Figure 40 . Series C Type KDC Circuit Breakers Equipped with Type KES Digitrip RMS 310 Trip Units, Ground Fault Protection(KES3125LSG, KES3125LSIG)
TESTEngaged
Remove
Cat.
In
Digitrip RMS 310 Rating Plug
Push to Trip
Digitrip RMS 310 Trip Unit40oC
5
73
2 8
4 6
Short Delay
Pickup • x Ir Time • ms
Ground Fault
Pickup • x Ir Time • ms
300
100
INST
200500
150
INST
3004
23 5
Ig = 25A
– Legacy Product –
Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating, In = Rating Plug Value, Ig = Unit of Ground Current, Ii = Instantaneous Override Pickup .
46
Time Current Curves TD012034ENEffective September 2015
1 Curve accuracy applies from –20ºC to +55ºC ambient . For possible continuous ampere derating for ambient above 40ºC, refer to Eaton .
2 For high fault current levels, a fixed instantaneous override is provided at 4000A (Tolerance ±15%) .
3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .
4 KS trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication AB-4 .
Figure 41 . KS Electronic Trip Unit Type KDC - Curve Number SC-4156-87A,1987
– Legacy Product –
47
Time Current Curves TD012034ENEffective September 2015