General descriptionMV vacuum contactor has the features
of energy saving, fire protection, explosion-proof, small
size, long life, low maintenance cost, reliable operation and
non-polluting and so on ,which is widely used in metallurgy,
mining, petroleum, chemical, railway, radio, communications,
industrial high-frequency heating industry, energy, transportation
and other power distribution system. With the technology
of breaking the current , high reliability and
compact structure, the contactor can be used in particularly harsh
conditions. They are suitable for the control and protection (with
fuses) lines, substations and distribution stations, motors,
transformers, capacitors and so on.Technical
parametersModelCKG3-7.2/160CKG3-7.2/250CKG3-7.2/400CKG3-7.2/630Rated
voltage(kv)7.2Rated current(A)160250400630Main circuit joint
capability(A/100 times)1600250040006300On-off capability of main
circuit(A/10times)1280200032005000Limit breaking capacity(A/3
times)3200400045006300Mechanical life(Ten thousand
times)100Mechanical lock life(Ten thousand times)10Main circuit
power frequency voltage withstand(kV)32Auxiliary circuit power
frequency voltage withstand(kV)2.5Power frequency voltage withstand
of control circuit(kV)2Rated operating
frequency(times/h)300Frequency of mechanical lock
operation(times/h)30Contact opening(mm)4±0.5Overrange(mm)1.5±0.3/*
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