Output Current Detection - Tripp Lite SU60KX Manual

2 Theory of Operation (continued)

2.4 Output Current Detection

Located at NH-SYS-P board (Auxiliary Power for System, Detect Circuit for Voltage and Current)
Located at NH-SYS-M board (System MCU and Control Circuit)
IoutR
(a) Connectors CNP11, CNP12 and CNP13 connect to 3 Output CT individually.
(b) MCU detects 3-phase output currents through Iout_R (101), Iout_S (103) and Iout_T (90). The output current could be bypass current or in-
verter current, depending on the operation mode.
OPCT_R-
CNP11
1 OPCT_R+
(W18)
2 OPCT_R-
OPCT_R+
OPCT_S-
CNP12
1 OPCT_S+
(W19)
2 OPCT_S-
OPCT_S+
OPCT_T-
CNP13
1 OPCT_T+
(W20)
2 OPCT_T-
OPCT_T+
5VS
RM 25
DM 3
IoutS
RM 33
3
Iout_R
(101)
CM 22
G1
RP120
-12VS
RP121 RP122
RP124
CP89
RP125
RP126
RP130
+12VS
G1
RP135
RP137 RP138
10
RP140
CP92
RP141
RP142
RP146
G1
RP147
RP150 RP151
13
12
RP155
CP94
RP156
RP157
RP158
G1
5VS
RM 44
DM 7
IoutT
RM 47 RM 61
3
Iout_S
(103)
CM 25
G1
52
CP25
RP119
CP26
G1
2
1
IoutR
3
UP19A
CP90
G1
CP91
RP136
9
8
IoutS
UP19C
CP93
RP148
14
IoutT
UP19D
5VS
RM 58
DM 13
3
Iout_T
(90)
CM 30
G1