NEBB - SCR Switchboard Cards
SpinTec has a considerable experience in maintenance of certain SCR control systems used aboard semisubmersible oil drilling rigs.
SpinTec was contracted by Dolphin Drilling Ltd in 2001. We refurbished the NEBB designed SCR control system on Rack level and on Card level aboard Bulford Dolphin (ex Transocean Discoverer). The NEBB SCR control aboard Dolphin Drilling controls the power distribution to the electric motors, used for: Top Drive, Rotary Table, Draw Works, Mud Pumps, Anchor Winches and Propulsion.
Nowadays, SpinTec provides Dolphin Drilling (a subsidiary of Fred Olsen Energy) with services and spare parts relative to SCR system maintanance for NEBB designed systems.
Spare parts for NEBB - SCR control systems
We currently provide the following services for the cards listed in the table below:
| Reference Number |
Drawing Number |
Card Description |
Hardware
Configurable |
| ML001 Na |
NL 454 059 |
Voltmeter |
No |
| ML002 Na |
NL 454 056 |
Channel Indication Card |
No |
| UX001 Na |
NL 454 054 |
Polarity Sensor. Direction / Speed / Braking |
No |
| LR38 a |
NL 434 608 |
Multiplexer Master / Slave |
No |
| UR001 Na |
NL 454 030 |
SCR Protection, Torque Limit / Overcurrent |
No |
| FD005 Na |
NL 454 370 |
Alarm Diode Matrix |
Yes |
| FZ001 Na |
NL 454 043 |
Torque Controller and Boost Limiter |
Yes |
| SX002 Na-E |
NL 454 055 |
Field Current reference controller |
No |
| KT047 Na |
NL 454 367 |
Power Supply Regulator |
No |
| DD11 a |
NL 434 567 |
Diode Array: field, armature cur. clamping pulse feedback |
No |
| FR003 Na |
NL 454 044 |
FCD Automatic Controller |
No |
| LR054 Na |
NL 454 177 |
Reed Relay Multiplexer |
No |
| FD006 Na-E |
NL 454 369 |
Diode Matrix |
Yes |
| SX001 Na |
NL 454 041 |
Soft Reference Controller |
Yes |
| RZ001 Na |
NL 454 045 |
Motor Speed Regulator |
Yes |
| SP001 Na-E |
NL 454 283 |
Active Power Limit |
No |
| RT13 d |
NL 434 598 |
Filed, Armature current ctrl & Pulse Generator |
No |
| LT015 Na |
NL 454 060 |
Filed / Armature current firing Pulse Amplifier |
No |
| UV060 vb-E Pos |
NL 454 773 |
Field Current feedback and 2 filters |
Yes |
| GT10 e |
NL 434 599 |
Armature Pulse Generator |
No |
| NL63735 |
NL363735 |
SyncBoard = Tri Phase PLL |
No |
| CV11a |
NL 500360 or NL 444360 |
Alarm Control |
Yes |
|
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ML001 Na original front and card |
ML002 Na original card |
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UX001 Na original card |
LR38 a original card |
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UR001 Na original card |
FD005 Na original card |
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FZ001 Na original card |
SX002 Na-E original card |
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KT047 Na original card |
DD 11 aoriginal card |
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FR003 Na original card |
LR054 Na original card |
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FD006 Na-E original card |
SX001 Na original card |
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RZ001 Na original card |
SP001Na-E original card |
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RT13 d original card |
LT015 Na original card |
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UV060 vb-E Pos original card |
GT10 e original card |
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Syncboard original card |
CV11a Alarm Control card |
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