Product

Scope of use:

(a) Installation method: the axis of relay pipeline shall be parallel to the transformer tank cover, and the end leading to the oil conservator is allowed to be slightly higher, but the inclination between the axis and the horizontal plane shall not exceed 4%;

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

(c) Relative humidity: no more than 95% at+20 ℃;

(d) Protection class: IP65.Scope of application: Altitude 0~4000m.；

(e) Power frequency withstand voltage: normally open contact 2000V, 1min, normally closed contact or single pole double throw contact: phase to phase 1000V, 1min, ground 2000V, 1min;

(f) 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. 

Example annotation:

QJ9-25A-03-1.5-J-4 TH represents the 9th design of a pipeline with a diameter of Φ 25mm, equipped with an air intake box, 03 series (1 light, 2 heavy, 2 oil deficient, oil deficient and heavy gas parallel connected before outgoing), heavy gas flow rate of 1.5m/s, with heavy gas action memory function (this heavy gas memory function requires counterclockwise rotation of the probe knob to reset), gas conduit length of 4m, and a gas relay with three prevention functions.