DGGQ3-63 self-recovery over-voltage and under-voltage protector (hereinafter referred to as the protector) is suitable for load line with AC voltage single-phase 230V/three-phase 400V, frequency 50/60 Hz, rated operating current 63A and below. When the circuit voltage is abnormal due to single-phase (three-phase) over-voltage caused by the neutral ine fault in the circuit, serious unbalanced three-phase load, too large line resistance, phase loss or high-order harmonics, the protector can automatically disconnect the load-side power supply, thereby preventing damage to the electrical equipment and realizing the protection of the electrical equipment. Also, the protector can automatically detect the line voltage, and can automatically close when the line has a normal voltage, thereby restoring the power supply to the electrical equipment. The product shall be used in series with a circuit breaker, mainly used in the incoming branch box or other power distribution lines to be protected in the civil and commercial buildings.
| DG | Enterprise code |
| GQ3 | GQ: Over voltage and Undervolatge 3: Third Generation |
| 1P+N | Number of poles: 1P+N, 3P+N |
| 63A | Rated current (A) 20,25,32,40,50,63 |
Overvoltage action time curve
Wiring connection
Product setting
Overall & Installation Dimensions
Order information
| Electrical characteristics | ||
| Product name | DGGQ3-63 | |
| Rated current (A) | 20,25,32,40,50,63 | |
| Rated voltage (V) | 230V (1P+N), 400V (3P+N) | |
| Number of poles | 1P+N / 3P+N | |
| Rated impulse withstand voltage Uimp (kV) | 4 | |
| Overvoltage action cut-off value (V) | AC >275V | |
| Overvoltage recovery value (V) | AC 240-265V | |
| Undervoltage action cut-off value (V) | AC 50-160V | |
| Undervoltage recovery value (V) | AC 185-205V | |
| Power transmission delay after power failure (s) | 30±5s | |
| Undervoltage trip time | 0.6s ＜ t ＜ 5s | |
| 275V | 3s ＜ t ＜ 15s | |
|
Overvoltage trip time |
300V | 1s ＜ t ＜ 3s |
| 350V | 0.25s ＜ t ＜ 0.75s | |
| 400V | 0.1s ＜ t ＜ 0.2s | |
| Power (W) | ≤1W | |
| Mechanical properties | ||
| Electrical life | ≥10000 | |
| Mechanical life | ≥100000 | |
| Indicator window | Digital indicator | |
| Normal operation conditions and installation characteristics | ||
| Storage temperature | -25~+55ºC | |
| Installation altitude | ＜ 2000m | |
| Installation category Class | Ⅱ , Ⅲ | |
| Installation method | 35mm standard rail | |
| Max. limit torque | 3.5N.m | |
| Incoming method | Top in and bottom out, bottom in and top out | |
| Protection grade | IP20 | |
| Electromagnetic compatibility (EMC) | |
| Electrostatic discharge | 8kV (air discharge) / 6kV (contact discharge) |
| Radio frequency radiation | 3V/m 80MHz ～ 1000MHz |
| Transient shock | 4kV 2.5kHz |
| Surge | ±4kV |
| Radio frequency conducted interference | 3V 0.15 ～ 80MHz |
| Voltage sags and interruptions | Class 2 |
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