Powerware Uninterruptible Power Supply SOLA 4000 - Manual (Page 101)

SOLA 4000 - PCB Description
JUE 401268 101
1 UPS Control Logic
1.4 Bypass
The bypass static switch control logic consists of two PCBs.
IF/PS - S Bypass monitoring and power supply
• bypass electronic power supply
• mains voltage sensing
CPHC16 - S Bypass control
• switching control of the static bypass switch SSB
• interface with the inverter or multiple inverters
• mains frequency monitoring
• mains voltage and phase rotation monitoring
• generation of synchronisation signal
• interface with multiple static bypasses
• UPS output voltage monitoring
• majority control for multiple static bypasses (parallel and hot
standby systems)
• synchronisation monitor: mains - UPS output