Model: W-OP4
The W-OP4 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 unbalance, under and over voltage. When the measured voltage moves outside the set-point limit, the relay will de-energize after the time delay, it operates automatically and shut down your motor before any damage is done. The relay will automatically reset to energize when the input voltage is raised past the set-point plus the hysteresis value,
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) |
Range | |
Over voltage (OV) : | Adjustable from 10% to 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. |
Relay Output | |
Output type : | 2-pole change over (DPDT) |
Contact rating : | 5A at 250VAC |
Operations : | Mechanical :2 x 107 timesElectrical :1 x 105 |
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 |
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