■ the scope and purpose
       The mine flame proof leak detection relay is the original JY82-2 / 3 Mine Flameproof leak detection relays the modified product, to contain the explosive gas (methane) mixture of coal mine, in the exchange of 50 Hz, Voltage 660 (380) V three-phase neutral point of the insulation to the power supply network, and the Feed Switch with, and leakage protection.

■ main characteristics of
1, with leakage protection;
2, the network is obviously capacitive current capacity of compensation.

Rated voltage 380V 660V
Single-phase action leakage resistance setting value 3.5K Ω 11K Ω
Single-phase leakage atresia resistance setting of 7.0 K Ω 22K Ω
1K Ω Action resistance movement time ≤ 80 ms
Capacitance 0.22-1.0 μ F / of the rate of compensation% ≥ 60