Caterpillar AVR with part number 9Y8400 for generator model SR-4
Caterpillar AVR with part number 9Y8400 for generator model SR-4
(OP)
I have Caterpillar generator model SR-4, s.n.: 5NA07170 or 6DA04011 which is equipped with automatic voltage regulator (AVR) with part number 9Y8400 s.n.: KCN AB396.
I am looking for replacement for original AVR or at least some sort of specification i.e. rated output Amps and Volts!
I am looking for replacement for original AVR or at least some sort of specification i.e. rated output Amps and Volts!






RE: Caterpillar AVR with part number 9Y8400 for generator model SR-4
Bill
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"Why not the best?"
Jimmy Carter
RE: Caterpillar AVR with part number 9Y8400 for generator model SR-4
RE: Caterpillar AVR with part number 9Y8400 for generator model SR-4
IBRCAN has provided you the current CAT part number, if you buy from a CAT dealer, ask then for a copy of the Special Instruction that give you instructions on the conversion.
The Basler AVC 63-12 is a often used replacement as well, watch out for Chinese knockoffs, they have a poor service life in my experience.
MikeL.
RE: Caterpillar AVR with part number 9Y8400 for generator model SR-4
Actually i was planning to buy regular AVR which can give ~12A,
For example with the following specs:
Type: UNIVERSAL AVR
Voltage Set-up:The voltage set up when the remnant magnetism greater than 4V25Hz
Input power Supply:AC 160~260V 50/60Hz
Maximum Output: DC 15A 90V(when the voltage reaches AC 207V)
Frequency Compensation:Built-in low speed protective circuit.
Regulation factor:less than 1%
links:
http://cema.wozaonline.co.za/_item?item_id=5732910...
Can you please give me an idea if this AVR will work for CAT SR-4 350kVA alternator?
Ps. Can someone explain the difference between S-TYPE,LS-TYPE,UNIVERSAL AVR?
Below link has a list of available AVRs i can choose from...
http://cema.wozaonline.co.za/AVR27S
Which one would be applicable in my case?
Thank you in advance!
RE: Caterpillar AVR with part number 9Y8400 for generator model SR-4
The universal AVR will likely work if these gensets are running stand-alone. Do these units have PMGs or are they self excited? To determine suitability for parallel operation, we would need more info.
Personally, I would stick with a high quality Cat VR6 or Basler AVC 63-12. Yes they are more expensive, but will likely be more reliable and durable.
RE: Caterpillar AVR with part number 9Y8400 for generator model SR-4
Does PMG stands for "Permanent Magnet Generator"? In this case is it a part of alternator or is mounted as separate part of the genset? In the workshop i have only stripped alternators....
RE: Caterpillar AVR with part number 9Y8400 for generator model SR-4
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Caterpillar AVR with part number 9Y8400 for generator model SR-4