Description
ABB 1SVR011700R0000
Technical Specifications:
- Measurement Range: Configurable voltage or current thresholds.
- Supply Voltage: Universal AC/DC supply voltage.
- Output Contacts: Changeover (SPDT) relay outputs for alarm and fault signaling.
- Response Time: Adjustable time delays to prevent nuisance tripping.
Functional Features:
- Parameter Monitoring: Continuous supervision of single-phase or three-phase electrical networks.
- Adjustable Thresholds: Front-panel potentiometers or digital settings for precise trip points.
- Hysteresis Control: Built-in hysteresis to prevent relay chatter at the trip threshold.
- Status Indication: Multi-color LEDs for power, normal operation, and fault conditions.
Application Scenarios:
- Phase failure and phase sequence protection for three-phase motors.
- Over-voltage and under-voltage protection for sensitive electronics.
- Pump dry-run protection via current monitoring.
Material Composition & Structural Characteristics:
- Housing: Standard DIN rail mountable thermoplastic enclosure.
- Terminals: Spring-clamp or screw terminals for fast, tool-assisted wiring.
- Internal Circuitry: Precision analog comparators and microprocessor-based measurement circuits.
Working Principle:
The relay continuously measures the input signal and compares it against the user-defined threshold. If the measured value exceeds the limit for longer than the set time delay, the internal relay changes state, opening or closing the control circuit to isolate the fault.
Installation Requirements:
- Sensing Inputs: Connect voltage or current sensing wires to the designated measurement terminals.
- Power Supply: Apply the correct control voltage to the relay power terminals.
- Configuration: Set the desired thresholds and time delays before applying the monitored signal.
Usage Precautions:
- Calibration: Use calibrated test equipment to verify trip points during commissioning.
- Wiring: Keep sensing wires separate from high-power switching wires to avoid false readings.
- Reset: Ensure the fault condition is cleared before manually or automatically resetting the relay.
