Hongrun OHR-D33 series three-phase phase sequence monitoring relay user manual covering monitoring modes, technical parameters, wiring and application examples.
This is the Chinese user manual for the Hongrun OHR-D33 series three-phase phase sequence monitoring relay. The device monitors a three-phase network for phase sequence faults and phase loss (open-phase) faults, provides one single-pole double-throw relay output, draws its power from the A, B and C input terminals, and isolates input from output. The manual covers the front panel layout, technical parameters, monitoring modes with timing diagrams, an application diagram and a wiring example.
The relay is designed for 35 mm DIN rail mounting and should be installed as vertically as possible so that heat can escape from inside the instrument. Rated input is 380V AC with an input range of 300V to 480V AC, the relay contact rating is AC250V/6A or DC30V/6A for resistive loads, and the unit meets the GB/T18268 requirement for industrial equipment applications (IEC 61326-1). A QR code on the label gives access to the manual, wiring diagram, register addresses, communication software and other information. This manual is written in Chinese.
| Rated input signal | 380V AC |
|---|---|
| Input signal range | 300V ～480V AC |
| Output signal | 1 single-pole double-throw relay |
| Contact capacity | AC250V/6A, DC30V/6A (resistive load) |
| Power supply | 300V～480V AC, taken from the A, B, C input terminals |
| Insulation resistance (input to output) | ≥100MΩ at 500VDC |
| Dielectric strength (input to output) | 2500Vrms for 1 min, no spark |
| Operating temperature | -10～50℃ (no condensation, no icing) |
| Relative humidity | 25%～85%RH |
| Storage temperature | -10～60℃ (no condensation, no icing) |
| Mounting | 35mm DIN rail |
| Dimensions | 22.5*110*115mm (W*H*D) |
| Electromagnetic compatibility | Meets GB/T18268 industrial equipment application requirements (IEC 61326-1) |
It monitors a three-phase network for phase sequence faults and phase loss (open-phase) faults.
It is mounted on a 35mm DIN rail; install it as vertically as possible so heat can escape from inside the instrument.
The PWR light indicates power, and the RELAY light indicates the relay has operated.