Meeting the demands of customers as a manufacturer, supplier, exporter and trader, we are offering
Numerical Voltage Relay. Keeping in mind the protection of power plants and feeders, these relays are applicable in protection of motor & generators and main or backup protection. Appreciated for longer functional life and integrated draw out system, our offered relays are provided with modular integrated draw out system and nonvolatile memory for data retention.
Features:
- Long functional life
- High speed
- Integrated draw out system
Details:
- IDMT & Definite time characteristics
- Negative phase sequence detection
- High Pickup/drop off ratio
- Modular Integrated draw out system
- Nonvolatile memory for data retention
- Wide range of system voltages
- High speed feature for under voltages and over voltages
- 2 line, 16 character back-lit LCD display and key pad
- Very low burden on measurement and Aux circuits
- Accurate and reliable measurement of voltages
- Field selectable system voltages
Specifications:
| System Voltage | 380V, 400V, 415V and 433V-3Ph 4W |
| Frequency Range | 45 Hz to 65 Hz |
| Pick-Up | Over Voltage-101% of Set Value Under Voltage-99% of Set Value |
| Drop-Out | Over Voltage 1% Below Pick-Up Voltage Under Voltage-1% Above Pick-Up Voltage |
| Response Time | <100ms |
| Setting Range | Under Voltage: Uv<0.99 to 0.50 Un in Steps of 0.01
Uv<<0.99 to 0.50 Un in Steps of 0.01(High Set)
Over Voltage: Ov>1.01 to 1.30 Un in Steps of 0.01
Ov>>1.01 to 1.30 Un in Steps of 0.01(High Set) |
| % of Negative Sequence | (1-25%) in Steps of 1% |
| Negative Sequence Definite Time | (0-300) in Steps of 1 sec |
| Negative Sequence Instantaneous Time (NS>>) for >25% | (0.0-5.0 Sec) in Steps of 0.1 |
| Time for Higher Set (UV<<&OV>>) | (0.0-5.0 Sec) in Steps of 0.1 |
- Protection of motor and generators
- Main or backup protection
- For detection of OV&; UV in power plants and distribution system
- Protection of transformer panel & Capacitor control panel
