| Customization: | Available |
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| Theory: | Gas Relay |
| Usage: | Oil-Immersed Transformer, Rectifier Transformer, C |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
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Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable power equipment manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations, high-voltage switches, and medium and low voltage complete sets of equipment. The equipment put into production and operation of the project advocates energy saving, intelligence, informatization, and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center, with 71 utility model patents and 15 invention patents. With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa, and other regions, covering more than 40 countries.
Operation environment:
1. Allowable operating temperature: -30ºC~95ºC
2. Installation method: The axis of the relay pipeline should be parallel to the transformer box cover, and the end leading to the oil storage cabinet is allowed to be slightly higher, but the inclination of its axis with the horizontal plane shall not exceed 4%.
When the relay is operating normally, it is filled with transformer oil and the float is in an upward position. When a minor fault occurs inside the transformer, the gas generated by the decomposition of the transformer oil gathers in the air chamber at the top of the relay, forcing the oil level to drop. The float then drops to the liquid level, and the magnet on it causes the reed contact to close, connecting the signal circuit and sending out an alarm signal. When a serious fault occurs inside the transformer, the pressure in the oil tank rises instantly, and there will be an oil surge that will hit the baffle. When the baffle rotates to a certain limited position, the magnet on it causes the reed contact to close, connecting the trip circuit, and directly cutting off the transformer power supply without prior alarm, thereby protecting the transformer. This product uses high-precision sensors to detect the above information in real time and transmit the data to the monitoring terminal.
Earthquake resistance: When the vibration frequency (sine wave) is 4-20HZ and the acceleration is 4g, the relay will not malfunction.
Protection level: The relay is IP55 for water spray protection.
Note: The product itself has rainproof function. In special cases, the rain cover needs to be purchased separately.
Sealing performance: The relay is filled with transformer oil and pressurized to 200KPa at room temperature for 20 minutes without leakage.
| Model | Pipeline dia (mm) | Amount of accumulated gas(ml) | Oil speed setting range(m/s) |
| QJ18-S-50 | Φ50 | 250~300 |
0.6~1.2 |
| QJ18-S-80 | Φ80 | 0.7~1.5 | |
| QJ20-S-50 | Φ50 | 0.6~1.2 | |
| QJ20-S-80 | Φ80 | 0.7~1.5 | |
| QJ23-S-50 | Φ50 | 0.6~1.2 | |
| QJ23-S-80 | Φ80 | 0.7~1.5 | |
| QJ24-S-80 | Φ80 | 0.7~1.5 | |
| QJ31-S-80 | Φ80 | 0.7~1.5 | |
| QJ32-S-80 | Φ80 | 0.7~1.5 | |
| QJ33-S-80 | Φ80 | 0.7~1.5 |
1.Our company provides you with project design and process design, and designs and manufactures products according to your equipment purchase plan and specific needs. And train technical and operating personnel for you.
2.The newly purchased products are provided with online assistance for installation and debugging. The products are under the lifelong service system. If problems occur in normal use, we will provide solutions within one working day after receiving user's feedback. We will try our best to get the product up and running as soon as possible. And there are regular visits by professional technicians to ensure the long-term, safe and reliable use of our products.
3.We use quality authentic materials, process and manufacture in strict compliance with ISO9001:2000 international quality management to ensure the quality of excellence and the smooth installation!
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