Under Voltage and Over VoltageUnder frequency and Over frequencyPhase asymmetry, Phase failure and Phase sequence
| Digital Voltage Protection Relay -1Ø & 3Ø-BacklightVPRD2M-BL | Analog Voltage Protection Relay - 1Ø600VPR-1 | Analog Voltage Protection Relay - 3Ø600VPR | Digital Voltage Protection Relays - 3Ø900VPR-2 | |
| Type of Input | 1Ø-2 wire, 3Ø-4 wire | 1Ø-2 wire | 3Ø-3 wire | 3Ø-3 wire, 3Ø-4 wire |
| No. of Input | 2 | 1 | 1 | 2 |
| Output Contact | 1x2C/O (DPDT) | 1C/O (SPDT) | 1C/O (SPDT) | 2X1C/O (SPDT) |
| Measuring Parameters | Under voltage, Over voltage, Phase asymmetry, Phase failure, Phase sequence | Under voltage, Over voltage | Under voltage, Over voltage, Phase sequence | Under voltage, Over voltage, Under frequency, Over frequency, Phase asymmetry, Phase failure, Phase sequence |
| Accuracy | Voltage: ±1% of set value ±2 digits,Time (Recovery Time, Trip delay, Power on delay): ±5% of setting ±150ms | Trip Voltage: ±0.5% of F.STrip Time: ±5% of F.S | - | Voltage:±1% of set value, Frequency: ±0.3Hz,Time (Recovery Time, Trip delay, Power on delay): ±5% of setting ±200ms |
| Supply Voltage | Self Powered | 180 to 300 VAC | Self Powered | Self Powered |
| Size | 35mm width | 17.5 / 35 (W) x 90(H) x 60 (D) | 17.5 / 35 (W) x 90(H) x 60 (D) | - |
| Mounting Type | DIN rail mount | DIN rail mount | DIN rail mount | DIN rail mount |
| Certification | CE, RoHS | CE, RoHS | CE, RoHS | CE, RoHS |