Anyone have experience with Schneider SAG fighter? how do you calculate the short circuit value of the output ?

[bdn2004]

A customer is installing these SAG Fighters in front of panelboards. The question is how do we model this in EasyPower power software ?
From the literature it's a Dynamic Voltage Restorer.

https://www.productinfo.schneider-electric.com/powerlogic_dvr_operation_guide/powerlogic-dvr-operational-manual/English/BM_PowerLogic%20DVR_Operation%20manual_0000577205.xml/$/CHP_DVR_TechnicalSpec_0000585447

 

[waross]

Are you able to model it as a constant KVA load or as a constant kW load?Think of it as a Variac with an imaginary character constantly adjusting to keep the output voltage within range.As the supply voltage drops, the current draw will increase, making the voltage dip worse for unprotected panels and equipment on the same transformer and/or the same distribution circuit.
Short circuit: Does this help;

Overload capacity (in Static Bypass mode) 200% - 60 seconds 500% - 10 seconds 3000% - 0.2 seconds

If the short circuit current exceeds 3000%, what happens?
If the SAG goes to hard bypass, (That is, takes itself out of the circuit) it may be safe to ignore the SAG for short circuit determination.

 

[bdn2004]

Thanks waross ....

Here is the answer from EasyPower...

Yes, the Schneider Electric Sag Fighter Power Logic DVR-225-22-0B75-40 seems to be for voltage sag regulation. The EasyPower software does not have a specific equipment type that particularly supports this device.

As for arc flash, I am not aware the IEEE 1584 Standard considering occurrences with voltage sag, dips or noise. Suggestion is to use the bus approach and apply annotations to reference. If the manufacturer has specific arc fault value(s) and time(s) for the output side, then a User-defined time may suffice for affected downstream paths.