Yueqing Yijin Electronics Co., Ltd.
Products
YJQGA-63 3P+N Over/Under Voltage/Overcurrent Reclosing Protector
This unit combines overvoltage, undervoltage, and overcurrent protection. When any of those faults appears on the line, the protector opens the supply so connected equipment is not left on an abnormal voltage or current.
When the circuit returns to normal, the protector can automatically restore power after a set delay. Overvoltage cutoff and reset, undervoltage cutoff and reset, overcurrent cutoff, power-on delay, and the restore delays after overvoltage, undervoltage, or overcurrent can each be set independently so the window matches the local supply. Typical uses include homes, shops, schools, and factories.
Scope of Application
This unit combines overvoltage, undervoltage, and overcurrent protection. When any of those faults appears on the line, the protector opens the supply so connected equipment is not left on an abnormal voltage or current.
When the circuit returns to normal, the protector can automatically restore power after a set delay. Overvoltage cutoff and reset, undervoltage cutoff and reset, overcurrent cutoff, power-on delay, and the restore delays after overvoltage, undervoltage, or overcurrent can each be set independently so the window matches the local supply. Typical uses include homes, shops, schools, and factories.
Product Features
The product is an adjustable overvoltage / undervoltage / overcurrent protector built to the maker’s enterprise standard.
It opens the circuit on overvoltage, undervoltage, or overcurrent. When voltage or current returns to the reset band, it reconnects after the set delay. No manual reset is required for that restore path.
The protector is not intended to operate on a short transient overvoltage.
If the line is still unstable, or if supply is lost and then returns suddenly, the protector does not reconnect at once. That delay is user-set.
Line voltage should not exceed 330 VAC. If a higher supply is required for a special job, contact the manufacturer.
Normal working conditions
1. Ambient air temperature
Operating temperature: −25°C to +75°C. The 24-hour average shall not exceed +35°C.
2. Altitude
The installation site shall not exceed 2000 m.
3. Atmospheric conditions
a. When ambient air is +35°C, relative humidity shall not exceed 50%. Higher humidity is allowed at lower temperatures.
b. In the wettest month, if the monthly average low is +20°C, monthly average relative humidity shall not exceed 90%. Condensation from temperature change should be considered.
4. Pollution level
Pollution degree 3.
5. Installation category
Installation categories II and III.
6. Installation conditions
a. The protector may be installed vertically or horizontally in a cabinet. Special orientations need a special order.
b. Install in a non-explosive atmosphere, without corrosive gases that attack metal or insulation, and without conductive dust.
c. Protect the unit from rain and snow.
Main parameters and technical performance
| Product Name | Overvoltage, undervoltage, overcurrent reclosing protector |
| Number of product poles | 1P+N, 3P+N |
| Rated working voltage | AC220 V / 230 V |
| Rated working current | 63 A: 1 A–63 A adjustable (default 63 A) |
| Rated operating frequency | 50 Hz / 60 Hz |
| Overvoltage action cutoff value | Adjustable from 240 V to 300 V (default 270 V) |
| Reset value after overvoltage protection | Adjustable from 235 V to 295 VAC (5 V below the overvoltage limit; default 265 V) |
| Undervoltage action cutoff value | Adjustable from 140 V to 200 V (default 170 V) |
| Reset value after undervoltage protection | Adjustable from 145 V to 205 VAC (5 V above the undervoltage threshold; default 175 V) |
| Overcurrent action cutoff value | 63 A: 1 A–63 A adjustable (default 63 A) |
| Power-on delay | Adjustable from 1 to 300 s (default 5 s) |
| Reset delay after overvoltage/undervoltage protection | Adjustable from 5 to 300 s (default 30 s) |
| Reset delay after overcurrent protection | Adjustable from 30 to 300 s (default 30 s) |
| Overcurrent confirm time | 6 s (an overcurrent longer than this time is treated as overcurrent and the unit trips) |
| Electrical / mechanical life | > 100000 operations |
| Installation method | Standard DIN-rail / guide-rail installation |
Product dimensions
* Electrical installation and maintenance must be done by qualified operators, with isolation and insulation measures in place.
