Basler Voltage Regulator
Basler Voltage Regulator
(OP)
I have been given a couple of 1971 vintage Basler Electric Volts per Cycle Regulators to fix P# 9085300100
As far as I can tell the tapped Toroid Reactor on one is u/s at least it has wildly different Ohms readings from the identical unit on the other making me think there may be a short between turns.
The Reactor P# BE12025 001
Also there is what looks like a Selenium or Copper Oxide rectifier on the unit feeding the winding of a saturable transformer
I called Basler to be told they no longer make parts for these old regulators.
The benefit of any suggestions or experience with these units would be appreciated.
Thanks
As far as I can tell the tapped Toroid Reactor on one is u/s at least it has wildly different Ohms readings from the identical unit on the other making me think there may be a short between turns.
The Reactor P# BE12025 001
Also there is what looks like a Selenium or Copper Oxide rectifier on the unit feeding the winding of a saturable transformer
I called Basler to be told they no longer make parts for these old regulators.
The benefit of any suggestions or experience with these units would be appreciated.
Thanks





RE: Basler Voltage Regulator
Virtually all new Automatic Voltage Regulators now have Under Frequency Roll Off built in. With a new AVR with UFRO you may not need a stand alone V/Hz regulator.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Basler Voltage Regulator
If its an SR4 (which it sounds like it isn't, its vintage is well before my time) or similar, some places even make kits with terminals in the same position as the old AVR.
EDMS Australia
RE: Basler Voltage Regulator
RE: Basler Voltage Regulator
RE: Basler Voltage Regulator
Is this a voltage regulator or a Volts per Hertz regulator?
I don't know of any modern generic regulators that do not have V/Hz built in as a standard feature.
Stand alone V/Hz regulators for sets below 2 MW have mostly joined the Dodo.
Scotty can comment on larger sets.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Basler Voltage Regulator
RE: Basler Voltage Regulator
A long time ago, V/Hz limiters were not common on small diesel machines.
There was a switch to disconnect the AVR until the set was up to speed.
A common failure was a mechanic forgetting to turn the AVR off before running the set at idle for some reason such as checking valve clearance.
The AVR would generally withstand the under Hertz operation of stopping and starting the set, but any length of time at low hertz would let the smoke out of the AVR.
Some operators liked to run at slow speed for a cool down period.
It was just a matter of time until they inevitably forgot to turn off the AVR before dropping the speed of the set and let the smoke out.
It was a great day when AVRs with built in Under Frequency Roll Off came on the market.
While the primary purpose of UFRO may have been to assist in recovery after an overload such as motor starting, the UFRO feature also saved the AVR if the set was run at low speed for any reason.
Bill
--------------------
"Why not the best?"
Jimmy Carter