XJ Electric WGB-878 Microcomputer-Based Automatic Transfer Device for Backup Power

The WGB-878 Microcomputer-Based Automatic Transfer Device for Backup Power is suitable for automatic transfer of busbar sectionalizing switches at voltage levels of 10kV and below. It also features busbar protection functions and can be directly installed on high-voltage switchgear or assembled into panels.

WGB-878 Function Configuration Table

Protection Functions
Automatic transfer upon loss of voltage on the first busbar
Automatic transfer upon loss of voltage on the second busbar
Stage I, II, III current protection
Overcurrent acceleration protection
Zero-sequence current protection (self-generated 3I0)
Zero-sequence acceleration protection
Overload tripping protection
Auxiliary Functions
Control circuit abnormality detection
Spring not charged detection
TV abnormality detection
Position abnormality detection
Waveform recording
Measurement and Control Functions
Telemetry acquisition, device telemetry status change, fault telemetry
Remote opening and closing of normal circuit breakers
Remote activation and deactivation of control plates, remote modification of settings