Mitsubishi Electric M9950 Series Technical Manual page 72

MITSUBISHI
ELECTRIC
●Transfer Procedures（Single-Module System, Inverter to Maintenance Bypass）
Device
主菜单
UPS Panel
旁路
输入
电池
输出
启动/停止
MAIN
BYPASS : 380V
INPUT
BATTERY : 540V
OUTPUT : 380V
START/STOP
主菜单
旁路
输入
电池
输出
启动/停止
MAIN
BYPASS : 380V
INPUT
BATTERY : 540V
OUTPUT : 380V
START/STOP
Input Panel
UPS Panel
※Do not turn off External Bypass Input
Cause the output shat down
M9950 SERIES UPS
OWNERS / TECHNICAL MANUAL
Touch Screen
测量 操作 日志
: 380V 50.0Hz
: 380V 50.0Hz
: 540V 0A
: 380V 50.0Hz 100A
52 S
52 R C C N V 52C
IN V
同步
72 B B A T T
10:00 08/08/08
MEAS OP
STATUS
50.0Hz
: 380V 50.0Hz
0A
50.0Hz 100A
52 S
52 R C C N V 52 C
IN V
SYNC.
72 B B A T T
10:00 08/08/08
测量 操作 日志
: 380V 50.0Hz
: 380V 50.0Hz
: 540V 0A
: 380V 50.0Hz 100A
52 S
52 R C C N V 52 C
IN V
同步
72 B B A T T
10:00 08/08/08
MEAS OP
STATUS
50.0Hz
: 380V 50.0Hz
0A
50.0Hz 100A
52 S
52 R C C N V 52C
IN V
SYNC.
72 B B A T T
10:00 08/08/08
Touch panel（LCD Screen)
is turned off.
Control powers are lost.
Breaker(52RS).
MITSUBISHI ELECTRIC M9950 SERIES UPS
Flowchart of Transfer Operation
(INVERTER to MAINTENANCE BYPASS)
Load on INVERTER
According to bypass
transfer operation, transfer
to bypass
Load on BYPASS
Internal Maintenance
Bypass Switch (52M)
Manual ON
External DC Input Breaker (72B)
Manual OFF
External Input Breaker (52R)
Manual OFF
Input Contactor (52RC)
Automatic OFF
Internal Output Switch
(52L)
Manual OFF
Internal Bypass input
Switch (52PS)
Manual OFF
External DC Input Breaker
(72B)
Automatic trip
Load on INTERNAL
MAINTENANCE BYPASS
Page Number:
3-29
Load status
Load on
Inverter
Load on
Bypass
Load on
Internal
Maintenance
Bypass