MPR NO-4313/3395
SCOPE OF WORK FOR PH-1 RECLAIMER MAIN TRAVEL DIGITAL DC
DRIVE
1.0Introduction to system
Two (02) numbers 8kW rating DC motor is used for main travel of
reclaimer. Both motors accurate speed control is required for
efficient operation of reclaimer.
Motor Name plate details DC SHUNT MOTOR, KW-8 , ARMATURE
VOLTAGE- 440V DC, ARMATURE CURRENT-22AMP. BASE SPEED-1500RPM, SPEED
VARIATION-150/1500/1500, EXCITATION- SEPARETELY SHUNT WOUND,
EXCITATION VOLTAGE- 220V DC, INSULATION CL-F, PERMISSIBLE OVER
SPEED 1800RPM, IP55, RATING-CMR,
2.0Scope of work
Supply of required hardware (DC drive Panel) & software,
Installation, testing & commissioning of complete system, the
drive panel should houses all the required accessories & ready
to terminate DC motor power cable, aux relays, power contactor,
digital display panel for current voltage etc, bottom entry gland
plate with suitable openings, On site training for operation of
above system to PURCHASER staff. Vendor should get the drawing
approval for proposed drive and power distribution SLD for panel
before supplying the material.
3.0Commissioning ---
Vendor shall be handed over the existing DC motor control panel
in working condition. Vendor shall replace the new DIGITAL DC DRIVE
PANEL in place of existing DC control panel. After replacing new DC
drive panel vendor shall show the normal operation, control etc. of
the reclaimer main travel.
Any other item required for making the system work except those
covered in the order shall be the responsibility of the vendor
unless until it is specifically informed at the time of submission
of the bid.
4.0Job Completion Time
Four (07) days from handing over of the site. Exact date shall
be communicated later on.
5.0Documentation
Six (06) hard copies of technical manual of DIGITAL DC DRIVE to
be submitted .
6.0Warrantee -
12 months from the date of commissioning.
7.0Exclusions
The following items are excluded from scope of vendor
1. Power cable for incoming supply
2. Digging & reinforcement of cable trenches.
3. Laying of control cables, terminations etc.
TECHNICAL SPECIFICATION OF DIGITAL DC DRIVE
(RATING OF DC MOTOR 8KW-02NOS)
Following technical description shall be furnished by the
tenders:-
S.NODescriptionPURCHASER RequirementOffered By Tenderer
1. NAME OF THE EQUIPMENTVariable Speed Digital DC Drive panel
complete for Reclaimer main travel Motor of rating 8kW (02nos)
2. INPUT VOLTAGE- AC415 +/- 10 % Volts 3phase
230+/-10% volts 1phase
3. INPUT FREQUENCY50 +/- 5 % Hz
4. OUT PUT VOLTAGE -ARMATURE440VDC
5. OUT PUT VOLTAGE -FIELD220VDC
6. RATING OF DRIVE- suitable for 2x8kW DC motor To be specified
by the party
7. Model no. & type OfferedTo be specified by the party
8. OUTPUT CURRENT RANGE - 0 to 100% continuous, -150% overload
for 25sec.To be confirmed by the party
9. CONTROL CIRCUITS- Fully isolated from power circuitTo be
confirmed by the party
10. CONTROL ACTION- Fully digital, Advanced PI with fully
adaptive current loops for optimum dynamic performance. Self tuning
current loop utilizing Autotune algorithm.To be confirmed by the
party
11. SPEED CONTROL- By armature voltage / Tacho / encoder or a
combination of encoder feedback and analogue tachogenerator. Speed
range 100:1 typical with tachogenerator feedback.
To be confirmed by the party
12. STEADY STATE ACCURACY
1. with analog tacho feed back.
2. with armature voltage feedback
3. with encoder feedback & digital refTo be specified by the
party
13. FIELD OUTPUT MODES- Constant current, Constant voltage,
Automatic weakening, Delayed Quenching after stop command to allow
dynamic braking, economy mode to prevent heating.To be confirmed by
the party
14. Protection Features For Over current 150% for 25sec.To be
specified by the party
15. Protection Features For Over current InstantaneousTo be
specified by the party
16. Protection Features For Field FailureTo be specified by the
party
17. Protection Features For Motor Over TemperatureTo be
specified by the party
18. Protection Features For Thyristor Trigger Failure To be
specified by the party
19. Protection against stalling during the normal running of the
equipment.To be specified by the party
20. Protection against stalling during the starting of the
equipment.To be specified by the party
21. Protection Features For tacho failure (AVF backup)To be
specified by the party
22. Protection Features For stack over temperatureTo be
specified by the party
23. Protection Features For zero speed detectionTo be specified
by the party
24. Protection of the drive against Earth fault at out put /
load endTo be specified by the party
25. Amp. Rating of Diode / ThyristorTo be specified by the
party
26. PIV Rating of Diode shall be more than 1500 Volts. To be
specified by the party
27. Provision of Alarm for the overheating of the power devices
& failure of cards.To be confirmed by the party
28. Provision for Drive trip on overheating of the power devices
& failure of cards.To be confirmed by the party
29. Percentage overload permitted
(a) For continuous operation.
(b) For one hour operation
(c) For one minute operation
To be specified by the party
30. Specify protection features provided for Over load
protection of MotorTo be specified by the party
31. The following features are required-
1.field weakening sensing
2.Motorised Pot simulator
3.Connection conflict checker
4.Dual motor swap
5.Spindle orientation
6.PC window based graphical configuration and monitoring toolTo
be specified by the party
32. Control Terminals
1. Universal Input (analog & digital)
2. Analog output
3. Digital Inputs
4. Digital Outputs
5. Digital In/Outputs
To be confirmed by the party
33. Feature of speed reversal To be specified by the party
34. Input harmonics current contents shall be limited as per
relevant standard. To be confirmed by the party
35. Overall efficiency.To be specified by the party
36. Ambient Temperature for drive panel.50 0 C
37. Safe continuos operating temperature of the drive at full
load.To be specified by the party
38. Does the facility for the remote operation
existsRequired
39. Kind of fault diagnostic methods being offered.To be
specified by the party
40. Provision for drive ON/OFF from remote control room To be
confirmed by the party
41. Provision for drive ON/OFF/ REACCELERATION from PLCTo be
confirmed by the party
42. Panel shall have independent alarm / fault annunciation on
LCD Display window at Local & Remote LCP.To be confirmed by the
party
43. Compatibility of drive with PC To be confirmed by the
party
44. Class of protectionIP41 or better
45. The panel shall be free floor mounting dust and vermin proof
suitable for 50 deg ambient with IP41 or better protection, with
front access. preferred size of cubicle shall be 650x650x1550mm.
The doors & side covers are made of sheet steel of 1.6mm thick
and all load bearing member are 2mm thick.
The panel door shall be hinged, lockable type
Complete Panel shall be mounted on a suitable steel channel
frame.To be confirmed by the party
46. The panel shall be painted by following standard seven tank
process, with epoxy based primer & final paint in light gray
color both in two coats.To be confirmed by the party
47. Panel shall have specified make items:
Contactor: L&T/ Siemens
Fuses: L&T/ Siemens/ Alstom
Rotary Switches: L&T/Siemens/ Kaycee
LED type Indication lamps: Binay/ Nova To be confirmed by the
party
48. Control circuit wiring The control wiring is of PVC
insulated(660/1100VAC) stranded copper conductor, equivalent to
0.75sq.mm or higher in cross section. Each control wire shall be
identified at both ends with ferrule number as per the drawing. To
be confirmed by the party
49. Electronic Signal Connection-
-Use flat cables
-Use wire wrap connection using PVC insulated 0.4mm dia copper
wire.
-Use of twisted wire of PVC insulated stranded 0.2mm copper
conductor. To be confirmed by the party
50. Grounding & Earthing- Suitable provision of earthing
shall be provided on panel. A ground bus of Aluminium size 5mmx50mm
is run along the entire width of the panel for a multi panel line
up.
51. TESTING & COMMISSIONING AT SITE The drive shall be
commissioned at site by the vendor & provide onsite training to
the PURCHASER staff for programming & Operation. To be
confirmed by the party
52. Testing procedure & the list of tests carried out before
dispatch.Details to be given by the party
53. Commissioning time .To be specified by the party
54. SPARES Vendor to recommend & quote for two years
operation spares for above drives.To be specified by the party
EMBED PBrush
EMBED PBrush
EMBED PBrush
EMBED PBrush
EMBED PBrush