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hi lenz81 Try to regulate your flux with constant current not constant voltage.

Can anybody tell me how to assign one of output LEDs for GE 469 ,745,750 relay to ABB 7.2KV breaker Rack-in Contact?i want to be able to see if breaker Racked in properly or not. some of output LEDs are already used for different purposes such as short circuit and ground fault protection.

thanx guys , i did not know enough about VFDs ,i did read some about them and i got it .

Dear waross you are not supposed to get mad at me becasue i am asking something i do not understand.the reason i am telling to put the meter probelm aside is becasue i use the same meter for both cases ,the thing i do not understand is why my motor driving more amps when i use VFD? what possibly...

thanx Edison ,my fan is a 125hp ,575V SF=1.15 and FLA 119Amp and my VFD is a GE-drive AV 300i,

The bus is AC 600 Volt, guys we have to put this meter problem aside ,the problem is what can cause high AMPS ?as i mentioned before if i run the fan locally(bypassing the controller) every thing is alright but as soon as VFD comes to picture every thing starts changing (high amps and low...

The VFD frequency is 55Hz ,i measured Voltage and Current directly from output wires of the VFD Cabinet ,i agree that it might be Meter problem , but i do not understand why VFD increase the AMP and decrease the Voltage,can it be because of VFD settings?the Fan motor is 125HP and the buss...

We have got couple of VFD controller for our Cooling fans, fans are 600V motors, when we run them locally (bypassing the VFD) the voltage and current is normal (600V and 90Amps) but whenever we use our VFDs we are getting 480V and 120Amps therefore the controller gets hot, some times it causes...

One of Our Fast grounding disconnects(ABB ELK-EB14)in our GIS was tried to be operated while it was in Lock position therfore the mechanisim inside is jammed in close position , we opened up the front cover and released the locked mechanisim and open the disconnect manually .is there any...

thanx ScottyUK and NCTHAI.

is it possible to inject SF6 into breaker while it is closed ?(it is HOT)

thanx Bill , i already found out ,it was low Load which was causing high amps ,therefore alram.

We have a Heat trace Panel in our plant ,there 16 Digitrace 920 Controller inside the panel which are connected in series , some of those controller are blinking (showing alarm) but whenever i check the alarm history nothing coming up !! the problem is that blinking causes our DSC to get alarm...

thanx guys

thanx guys , do u know any similar software that i can get for free ?

Hi Does Anybody know where can i download SynerGEE Electric? thanx.

Hi i need a software to simulate relay settings , does any body have any idea ? thanx.