Operating Procedures - Mitsubishi Electric M9950 Series Technical Manual

MITSUBISHI
ELECTRIC

3.5 OPERATING PROCEDURES

The operation procedures are described by the symbols below.
Although the operation of "UPS supply" ⇔ "bypass supply" might be different in each system
which depends on user's requirements, please consult the exclusive manual for each system in
order to ensure proper operation.
For parallel operation system of MMS (Multi-Module System), refer to section "3.5.2 Start-up /
Shut-down (MMS with Individual Bypass Parallel Redundancy)".
Before the UPS startup, the internal Bypass line starts to supply
the unconditioned bypass input power to the critical load if the
!
External input (or Bypass) Circuit Breaker is closed. Be extremely
careful with closing the External input (or Bypass) Circuit Breaker.
Confirm the position of the circuit protectors (CPMC, CPMS and
NOTE
EMB) located at the upper part of the cabinet (FIGURE 3.7).
1) CPMC and CPMS: ON;
CPMC
500, 600kVA
M9950 SERIES UPS
OWNERS / TECHNICAL MANUAL
：Manual Operation
：Automatic Operation /
Device Status
FIGURE 3.7 Circuit protectors location
CPMS EMB
MITSUBISHI ELECTRIC M9950 SERIES UPS
2) EMB: OFF.
CPMC CPMS EMB
300, 400kVA
Page Number:
3-17
：Selection Item
：Power Status
CPMC CPMS EMB
60, 120, 160, 200kVA