PRODUCT DESCRIPTION
ASEA BROWN BOVERI 1SVR440851R1000 - Three-Phase Monitoring Relay
This device is a CM-PVS.21P three-phase monitoring relay from the ABB CM-P series. It is engineered for continuous supervision of three-phase AC systems, detecting critical power supply anomalies such as phase sequence errors, phase loss, overvoltage, undervoltage, and phase unbalance. Designed for industrial control panels, it provides protective functions for motors, pumps, and other sensitive three-phase equipment by ensuring stable and compliant power conditions.
Technical Specifications:
- SERIES/FAMILY: CM-P Series, CM-PVS.21P
- COMPONENT TYPE: Three-Phase Monitoring Relay
- ELECTRICAL SPECS:
- NOMINAL SUPPLY VOLTAGE: 3 x 300-500 VAC (L-L)
- MEASUREMENT RANGE: 300-500 VAC
- FREQUENCY: 50/60 Hz
- OUTPUT CONTACTS: 2 x 1 C/O (SPDT)
- RATED CONTROL SUPPLY VOLTAGE: 300-500 VAC
- MECHANICAL/PHYSICAL:
- FORM FACTOR: Modular DIN Rail Mount
- WIDTH: 45 mm
- MOUNTING: DIN Rail
- INTERFACE/CONTROL:
- MONITORING FUNCTIONS: Phase Sequence, Phase Loss, Overvoltage, Undervoltage, Phase Unbalance
- ADJUSTABLE THRESHOLDS: Yes (for voltage and unbalance)
- TIME DELAYS: Adjustable (for tripping and startup)
- ENVIRONMENTAL/MOUNTING:
- IP RATING HOUSING: IP50
- IP RATING TERMINALS: IP20
- OPERATING TEMPERATURE: -25 to +60 degrees C
- COOLING METHOD: Natural Convection
- COMPATIBILITY/APPLICATION: Protection of three-phase motors, pumps, HVAC systems, industrial machinery, and general three-phase electrical installations requiring continuous power quality monitoring.