MGE UPS Systems EPS 6000, Installation Manual

Page: 59 / 72

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 system 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 system).
a. Apply power to Q4S by closing the upstream circuit breaker supplying
Q4S, and the upstream circuit breaker supplying the optional
maintenance bypass input (if present).
b. Apply power to the UPS modules by closing the upstream
circuit breaker(s) supplying the main AC input (mains 1).
c. Start the SSC:
1. Close the optional system maintenance bypass circuit breaker
Q3BP (if present, in the maintenance bypass cabinet). Power is
now available at the SSC output (the load is energized) via the
maintenance bypass source.
2. Close the upstream circuit breaker Q4S that supplies the bypass input
to the SSC. The SSC will come on-line; after about ten (10) seconds,
the wrap-around circuit breaker Q2S will automatically close.
3. Close the optional system isolation circuit breaker Q5N (if present,
in the maintenance bypass cabinet).
4. Open the optional system maintenance bypass circuit breaker Q3BP
(if present). The SSC is now on-line and the load is supplied via
the bypass source.
Note that if your SSC configuration does not include the maintenance bypass option, start-up
requires only closing Q4S to supply the bypass source to the SSC. All other functions are fully
automatic.
d. Start the UPS modules:
1. For each module, close the input isolation circuit breaker Q1. Verify that the
following conditions exist:
D o n o t o p e r a t e t h e E P S 6 0 0 0 U P S u n t i l yo u a r e
f a m i l i a r w i t h t h e b a s i c i n d i c a t o r s , c o n t o l s , a n d
o p e r a t i o n a l s e q u e n c e s , a s d e s c r i e d i n t h e E P S 6 0 0 0
U P S U s e r ' s G u i d e , S h a r e d S y s t e m s ( M G E p a r t
nu m b e r 8 6 – 1 3 0 0 3 4 – 0 0 ) .
IMPORTANT
3.6.2 Initial Start-up
Procedure
3 — 9 Installation, Shared Systems
Installation manual