MGE UPS Systems EPS 8000 User Manual

The following start-up procedure should be performed during the initial start-up following installation of the system, and

this sequence should be followed any time that the EPS 6000 UPS is being restarted from an off condition (i.e., after

the UPS has been powered down by removing the upstream AC input power and opening all the circuit breakers of

the UPS).

a.

Apply power to Q4S by closing the upstream circuit breaker supplying Q4S. 

b.

Apply power to the UPS input by closing the upstream circuit breaker supplying the main AC input (mains 1).

c.

Close the optional maintenance bypass circuit breaker Q3BP (if present).  Power is now available at the UPS

output (the load is energized) via the bypass source. 

d.

Close the control or bypass circuit breaker Q4S.  The static switch will come on-line; the fans will start. 

e.

Close the output isolation circuit breaker Q5N (if present). 

f.

Open the maintenance bypass circuit breaker Q3BP (if present).  The load is now supplied via the bypass

source.  

g.

Close the input isolation circuit breaker Q1. Verify that the following conditions exist: 

◗

The red “load not protected” LED is on 

◗

The rectifier/battery charger automatically starts 

If either condition is not present, there is a fault.  Open Q1 and contact MGE Customer Support Services.

h.

Close the battery disconnect circuit breaker QF1.  The batteries are now connected to the rectifier/battery

charger, and have begun charging.

i.

If the UPS is not programmed for automatic restart, press the “inverter on” pushbutton.  The green “load

protected” LED will flash for about 3 seconds, indicating that the inverter is starting.

j.

The UPS will automatically transfer the load to the UPS inverter output.  The green “load protected” LED will

turn on and remain on.