PSP 641U Standby Power Automatic Transfer Device

Guodian Nanzi PSP641U Automatic Transfer Switching Equipment

1 Overview
The PSP641U Automatic Transfer Switching Equipment is a multifunctional device based on typical automatic transfer switching configurations, integrating various measurement and control functions. It is suitable for substation automation systems at various voltage levels, with applications spanning industries such as power, water conservancy, transportation, petroleum, chemical, coal, and metallurgy.
1.1 Backup Switching and Protection Function Configuration
a) 7 typical automatic transfer switching modes;
b) Overload intertripping;
c) Two-stage voltage-restrained busbar overcurrent protection;
d) Single-stage zero-sequence overcurrent protection;
e) Charging protection;
f) TV disconnection detection.
1.2 Measurement and Control Function Configuration
a) 22 external switch inputs for remote signal acquisition;
b) Circuit breaker position, manual tripping, and accident remote signals;
c) Remote control of normal circuit breaker opening and closing;
d) 2 pulse inputs, electric energy accumulation;
e) GPS time synchronization input