QJ9-50, QJ9-80 series dual float gas relay (with remote signal transmission)

The QJ9-50 and QJ9-80 series dual floating ball gas relays (with remote transmission signals) are used for oil immersed transformers of 110KV and above. The internal structure adopts a dual floating ball structure and has three signal outputs: light gas, heavy gas, and oil shortage. It has a light gas volume of 4-20mA remote transmission and a light gas volume of RS485 remote transmission, with safer and more reliable performance, and is highly welcomed by users.

1. Installation method: The axis of the relay pipeline should be parallel to the transformer tank cover, allowing for a slightly higher end leading to the oil storage tank, but the inclination of its axis with the horizontal plane should not exceed 4%.

2. Environmental requirements: -30 ℃ to+70 ℃ (can be customized according to user needs to support up to -45 ℃ to+70 ℃); Work environment requirements: -30 ℃ to+115 ℃ (can be customized according to user needs to support up to -45 ℃ to+115 ℃).

3. Relative humidity: not exceeding 95% at+20 ℃.

4. Protection level: IP55 (customizable according to user needs), applicable range: altitude 0~4000m.

5. Power frequency withstand voltage: normally open contact 2000V/min, normally closed contact or single pole double throw contact: phase to phase 1000V/min, ground 2000V/min.

6. Insulation performance: normally open contact 2500V, 1000M Ω, normally closed contact or single pole double throw contact: phase to phase 1000V, 500M Ω, ground 2500V, 1000M Ω.