Ultra Line GMR - Microelettrica · PDF fileTrip time delay : tBF = (0.05 ÷ 0.5)s step 0.01s F60FL: PT Fuse Failure 60FL = (ON - OFF) 1 - F64S (1Uo): 95% Stator Ground Fault Protection

GMRGENERATOR PROTECTION & MANAGEMENT RELAY

Multifunction Microprocessor Relay for protection of medium/large syncronous generators. The relay measures the RMS ofthree-phase currents and voltages and computes the positiveand negative sequence components of the Current system.A separate input is dedicated to the measurement of theNeutral-to-Ground voltage and its harmonic components used for a complete Stator Ground Fault protection.Relay's programming and setting can be made directly by the front face keyboard or via the serial communication ports.Setting, event recording and oscillography are stored into non volatile memory (E2prom).The relay is fitted with a multivoltage, autoranging power supply unit self protected and trasformer isolated. Besides the normal Watchdog and Powerfail functions, acomprehensive program of self-test and self-diagnostic provides:• Diagnostic an functional test with checking of program

routines and memory contents, running every time theauxiliary power supply is switched on.

• Dynamic functional test running during continuously normal operation.

• Complete Test (including or not including output relays)activated by the keyboard or via the communication bus.

Any internal fault detected is indicated by a fault message on the display and by de-energization of associated I.R.F.

Protective Functions• F21 : Two under-impedance elements• F24 : Two over excitation levels• F27/59 : Two over/under voltage elements• F32 : One Reverse power protection element• F37 : One under-power level• F40 : One inpedance element for Loss of Field protection• F46 : Two unbalance elements• F49 : Thermal image element with prealarm level• F50/27 : Inadvertent C/B closure protection• F50V/51V : Two voltage-controlled overcurrent levels• F51BF : Breaker Failure protection• F60FL : PTs' fuse failure protection• F64S : Two 95% Stator Earth Fault protection elements

One 100% Stator Earth Fault protection element• F81 : Two over/under frequency elements

Recording• Event Recording (last 100 events)• Trip Recording (last 20 trips) complete with cause of tripping

and values of the input quantities at the moment of trip

Control• 6 Output Relays user programmable• 4 Digital Inputs user programmable• Blocking input and Blocking output for pilot

wire selectivity coordination• Trip circuit supervision• Associated Circuit Breaker control (OPEN / CLOSE)• Complete autodiagnostic program with dedicated relay

Ultra Line

M06

-ING

-Rev

.01

Technical Characteristics• Graphical Display (128x64 dot)• 4 Leds for signalization• Multilanguage Display (English/Italian standard,

available - other on request)

Power Supply Ratings • Autoranging multivoltage power supply• Type 1 : 24V(-20%) / 110V(+15%) a.c. - 24V(-20%) / 125V(+20%) d.c.• Type 2 : 80V(-20%) / 220V(+15%) a.c. - 90V(-20%) / 250V(+20%) d.c.

Communications • 1 RS485 Serial communication port on rear side• 1 RS232 Serial communication port on front panel• Modbus RTU / IEC870-5-103 Communication Protocols• Canbus port for external additional modules

Expansion Modules (optional) • “UX10-4” 10 Digital Inputs and 4 Output Relays• “14DI” 14 Digital Inputs• “14DO” 14 Output Relays

Execution • 2 Module box. (3 modules with 1 expansion,

4 modules with 2 expansion)• IP44 protection case (on request IP54)• Totally draw-out execution

Software• MSCom2 Program interface for device management

GMR

2

M06

-ING

-Rev

.01

MeasurementsReal Time Measurements T, IA, IB, IC, UA, UB, UC, φa, φb, φc, Uo1, Uo3, I2, W, fTrip Recording (last 5 trips with date & time)Programmable Input QuantitiesFn : Systems Frequency : (50 ÷ 60)HzIn : Rated primary current of phase : (0 ÷ 9999)A step 1AKv : Systems P.Ts’ ratio : (2 ÷ 655) step 0.1Uns : Secondary voltage of PT : (50 ÷ 125)V step 1VEn : Secondary voltage of Neutral-to-Ground PT : (50 ÷ 125)V step 1VIb : Generator rated current : (0.5 ÷ 1.1)In step 0.1In1 - F21 (Z<): UnderimpedanceFunction enabling : No - YesTrip level : 1Z = (0.1 ÷ 1)Zn step 0.01ZnIndependent time delay : t1Z = (0.05 ÷ 9.99)s step 0.01s2 - F21 (Z<<): UnderimpedanceFunction enabling : No - YesTrip level : 2Z = (0.1 ÷ 1)Zn step 0.01ZnIndependent time delay : t2Z = (0.05 ÷ 9.99)s step 0.01s1 - F24 (φ>): Overexcitation V/HzFunction enabling : No - YesMinimum pick-up level : 1φ> = (1 ÷ 2)Un/Fn step 0.1Un/FnCurve time multiplier : K = (0.5 ÷ 5) step 0.1Ist = Motor start-up (Locked Rotor) current : (0.5 ÷ 10)Im step 0.1Im

2 - F24 (φ>>): Overexcitation V/HzFunction enabling : No - YesTrip level : 2φ> = (1 ÷ 2)Un/Fn step 0.1Un/FnIndependent time delay : t2φ = (0.1 ÷ 60)s step 0.1s1 - F27/59: First Voltage ElementFunction enabling : No - YesOperation mode : (Un + 1u) or (Un - 1u) or (Un ± 1u)Operation level : 1u = (1 ÷ 50)%Un step 1%UnIndependent time delay : t1u = (0.1 ÷ 60)s step 0.1s2 - F27/59: Second Voltage ElementFunction enabling : No - YesOperation mode : (Un + 2u) or (Un - 2u) or (Un ± 2u)Operation level : 2u = (1 ÷ 50)%Un step 1%UnIndependent time delay : t2u = (0.1 ÷ 60)s step 0.1sF32: Reverse Active PowerFunction enabling : No - YesTrip level : Ir> = (0.02 ÷ 0.2)Ib step 0.01IbIndependent time delay : tIr> = (0.1 ÷ 60)s step 0.01sF37: UnderpowerFunction enabling : No - YesRated power : Wb = √3·Un·IbTrip level : W< = (0.05 ÷ 1.00)Wb step 0.05WbIndependent time delay : tW< = (0.1 ÷ 60)s step 0.1sF40: Loss of FieldFunction enabling : No - YesCircle offset : K2 = (5 ÷ 50)%Zb step 1%Circle diameter : K1 = (50 ÷ 300)%Zb step 1%Independent trip time delay : tz = (0.2 ÷ 60)s step 0.1sIntegration time : ti = (0 ÷ 10)s step 0.1sUndervoltage : V<0.3VnUndercurrent : I<0.2In

Vt = [K: ( – [ φ>])] + 0.5

HzTrip time delay :

JX

K2

Re

K1

GMR

3

M06

-ING

-Rev

.01

1,2 - F46 : Current Unbalance (Negative Sequence)Function enabling : No - YesContinuous Negative Sequence current level : 1Is = (0.05 ÷ 0.5)Ib step 0.01IbTime multiplier : Ks = (5 ÷ 80)s step 1sCooling time : tcs = (10 ÷ 1800)s step 1sNegative Sequence current Alarm level : 2Is = (0.03 ÷ 0.5)Ib step 0.01IbIndependent time delay : t2Is = (1 ÷ 100)s step1sF49: Thermal OverloadWarming up time constant : Tc = (1 ÷ 400)min step 1 min.Temperature prealarm : Ta/n = (50 ÷ 110)%Tn step 1 %TnF50/27: Inadvertent Generator EnergizationIC = (ON - OFF)1 - F50V/51V (I>): Low-set OvercurrentAutomatic voltage restrain : No - YesIf set ON, the actual operation level I> is changed from the set value [I>] according to the curve.If set OFF, voltage restrain does not operate.Trip level : I> = (1 ÷ 2.5)Ib step 0.01IbIndependent time delay : F(I>) = D: tI> = (0.05 ÷ 30)s step 0.01sDependent time delay : F(I>) = SI: tI> = (0.05 ÷ 30)s @ 5x[I>]2 - F50V/51V (I>>): High-set OvercurrentAutomatic voltage restrain : No - YesTrip level : I>> = (1 ÷ 9.9)Ib step 0.1IbIndependent time delay : tI>> = (0.05 ÷ 3)s step 0.01sF51BF: Breaker Failure ProtectionTrip time delay : tBF = (0.05 ÷ 0.5)s step 0.01sF60FL: PT Fuse Failure60FL = (ON - OFF)1 - F64S (1Uo): 95% Stator Ground Fault ProtectionFunction enabling : No - YesTrip level : 1Uo = (5 ÷ 99)%En step 1%EnIndependent time delay : t1O = (ist - 0.05 ÷ 9.99)s step 0.01s2 - F64S (2Uo): 95% Stator Ground Fault ProtectionFunction enabling : No - YesTrip level : 2Uo = (5 ÷ 99)%En step 1%EnIndependent time delay : t2O = (ist - 0.05 ÷ 9.99)s step 0.01sF64S (Uo3): 100% Stator Ground Fault ProtectionFunction enabling : No - YesTrip level : 3Uo = (1 ÷ 30)%En step 1%En (3rd Harmonic Undervoltage)Independent time delay : tO3 = (ist - 0.05 ÷ 9.99)s step 0.01s1 - F81: First Frequency ElementFunction enabling : No - YesOperation mode : (Fn + 1f ) or (Fn - 1f ) or (Fn ± 1f )Operation level : 1f = (0.05 ÷ 9.99)Hz step 0.01HzIndependent time delay : t1f = (0.1 ÷ 60)s step 0.01s2 - F81: Second Frequency ElementFunction enabling : No - YesOperation mode : (Fn + 2f ) or (Fn - 2f ) or (Fn ± 2f )Operation level : 2f = (0.05 ÷ 9.99)Hz step 0.01HzIndependent time delay : t2f = (0.1 ÷ 60)s step 0.01s

t

I2/Ib

Ks

1Is/Ib

I>/[I>]

0.2 U/Un

1

0.2 0.8

bts

adv.

com

M06

-ING

-Rev

.01

Microelettrica Scientifica S.p.A. - 20089 Rozzano (MI) - Via Alberelle 56/58 Italy Tel. +39 02 575731 - Fax +39 02 57510940 - E-Mail: [email protected]

GMR

4

Connection Diagram

Typical CharacteristicsAccuracy at reference value of influencing factors 1% In - 0.1% On for measurements

1% +/- 10ms for timesRated Current In = 1 or 5A - On = 1 or 5ACurrent overload 500 A for 1 sec; 20A continuosBurden on current inputs Phase : 0.01VA at In = 1A; 0.2VA at In = 5A

Neutral : 0.03VA at In = 1A ; 0.2VA at In = 5ARated Voltage Un = 100 - 125VVoltage overload 2Un continuosBurden on voltage input 0.04 VA at UnAverage power supply consumption 8.5 VAOutput relays rating 5 A; Vn = 380 V

A.C. resistive switching = 1100W (380V max)make = 30 A (peak) 0.5 sec.break = 0.3 A, 110 Vcc,L/R = 40 ms (100.000 op.)

Order code - Example :GMR 1 2 1 1 1 2

Power Supply Phase Rated Neutral Rated Configuration 1st Expansion 2nd ExpansionInput Current Input Current R1 (14-25) module module

1 = Type 1 1 = 1A 1 = 1A 1 = N.O. 1 = None 1 = None2 = Type 2 2 = 5A 2 = 5A 2 = N.C. 2 = UX10-4 2 = UX10-4

3 = 14DI 3 = 14DI4 = 14DO 4 = 14DO

The performances and the characteristics reported in this document are not binding and can modified at any moment without notice.