R40 Series Gas Relay
R40 series gas relay is mainly used to protect various types of oil-immersed hermetically sealed transformer. When the transformer is in operation, gas is generated due to internal fault and gathered in the gas collecting chamber of the gas relay. When the volume of gas reaches a certain degree, alarm or tripping contact will be triggered to output alarm signal or tripping signal, so as to protect the transformer.
1. Mounting position: Mounted on the top.
2. Environmental requirements: -30 ℃~ +70 ℃(can be customized according to user needs to support up to -45 ℃ to+70 ℃); working environment: -30 ℃~ +115 ℃(customizable according to user needs, can support up to -45 ℃~+115 ℃).
3. Relative humidity: no more than 95% at +20 °C.
4. Protection level: IP55(Customizable according to user requirements). Scope of application: Altitude 0~4000m.
5. Insulation performance: normally open contact 2500V, 500M Ω, normally closed contact or single pole double throw contact: phase to phase 1000V, 500M Ω, ground 2500V, 1000M Ω.
6. 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.
The product provides a variety of color options, specifically described as follows:
| Color card No | Color | Optionality of choice |
| RAL7038 | Agate grey | Default |
| RAL7042 | A Traffic grey A | Optional |
| RAL7035 | Light grey | Optional |
Torque Reference Table
| Number | Assembly position | Thread specification | Recommended torque | Assembly tool specification | Notes | |
| 1 | Flange installation hole | M10 bolt | 18～22Nm |  |
17mm | |
| 2 | Connecting terminal | M5 | 4～5Nm | |
8mm | Suggest manual installation |
| 3 | Terminal box cover | M5 | 4～5Nm |  |
PH2 | Suggest manual installation |
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