Transformer Over Temperature Detection - Tripp Lite SU60KX Manual

2 Theory of Operation (continued)

2.22 Transformer Over Temperature Detection

(This function is only for SU40K, SU60K, SU80K, SU60KTV, and SU80KTV models)
Located on NH-M board (System MCU and Control Circuit)
(a) CNM10 connects to the output transformer, CNM11 connects to the input transformer.
(b) Thermal switch sensors are mounted on the coils of the transformer.
(c) The thermal switch sensor will be open when the transformer coil's temperature exceeds 150. MCU can detect the temperature status through
IPRT_Temp (51) and OTRT_Temp (61).
Note: For international models (SU20KX, SU40KX, SU60KX and SU80KX), short-pins must be inserted into CNM10 and CNM11.
5VS
RM 4
1K
CNM10
RM 175
2
TO OUTPUT XFMR
392
1
CON2
5VS
RM 8
1K
CNM11
RM 176
2
TO INPUT XFMR
1 392
CON2
71
OPRT Temp (61)
ZD4
CM 137
5V1
104
G1
IPRT Temp (51)
CM 138 ZD5
5V1
104
G1