Model : W-PR3
3Ø Under, Over and Voltage unbalance with adjustable time delay & selectable voltage Code : 6007
The W-PR3 Phase Protection Relay is a digital electronic instrument designed for AC voltage monitoring and protection in 3 phase 4 wire and 3 phase 3 wire system. Used in application such as main failure, phase sequence, phase unbalance, under and over voltage. The W-PR3 is a designed to monitor the correct phase sequence of 3 phase system. With correct phase sequence applied the output relay will energizes and remains de-energized if an incorrect sequence is applied, the display will show “Pr”.
| Feature | |
| Approved standard : | CE Mark |
| Power consumption : | 2 VA |
| Input voltage : | 220, 440, 460 VAC (Requirement) 380, 400 or 415 VAC 3Ø (Selectable) |
| System frequency : | 50/60 Hz. |
| Accuracy : | ± 0.5% of normal voltage |
| Display : | 7-segment Red LED Letter 0.39” (9.90mm) |
| Phase sequence : | L1, L2, L3 |
| Range | |
| Over voltage (OV) : | Adjustable from 10% – 20% (Requirement 10-25%) |
| Under voltage (UV) : | Adjustable from 2% to 20% (Requirement 2-25%) |
| Unbalance voltage (UB) : | Adjustable from 2% to 20% (Requirement 2-25%) |
| Differential (Hysteresis): | Preset at 1% |
| Time | |
| Delay off : | UV and UB Adjustable 0-5 sec. OV preset at 2 sec. |
| Delay on : | Adjustable from 0-15 min |
| Relay Output | |
| Output type : | 2-pole change over (DPDT) |
| Contact rating : | 5A at 250VAC |
| Operations : | Mechanical : 2 x 107 times Electrical : 1 x 105 times |
| Relay reset : | Automatic |
| Environmental | |
| Operating temperature: | -10°C to +55°C |
| Storage temperature : | -10°C to +70°C |
| Ambient humidity : | Max 85%RH |
| Enclosure | |
| Mounting : | DIN rail 35mm |
| Housing : | ABS UL94V-0 |
| Protection class : | IP20 |
| Wire fixing : | Screw terminal block (3.5mm2 self lifting) |
| Indicator : | LED 3mm |
| Dimension in mm : | 55 x 76 x 106 |
| Weight : | 303 g |
Download W-PR3