LYE103 JN17-12/40 Indoor high voltage AC electrical earth switch
JN17-12/40 indoor AC high voltage earthing switch is an advanced level product with high-tech parameters performance.After comprehensive evaluation,it conforms to GB1985 and IEC129 standard ,applies to power system of 3-12kV and three-phase AC 50Hz.It owns short-circuit making capacity to protect other electric equipment not being damaged.Can be used with various high voltage switchgear,also play a protective role in the high-voltage electrical equipment overhaul.
Ambient temperature scope:form 12°C to40°C
Heavy cold zone:25°C allowed
Altitude not more than 1000m
Relative humidity:average everday not exceeding 95%
Monthly average not more than 80%
There shall have no conductive dust,no corrosive gasess,no severe vobaration and impact.no combustion and explosion on the site for switch operating.
Indoor high voltage AC electrical earth switch use resin insulators, on which live parts, made of silver-plated electrolytic copper (99.9%), are placed. The blades are directly connected to the drive shaft. Contact elements are overdimensioned according to the requirements in order to guarantee, together with a high contact pressure between blades and contacts, a reduced ohmic resistance at the contact surface and a minimum metal wear-off during the life of the grounding switch, with the necessary robustness to withstand thermal and mechanical stresses under short-circuit conditions.
|Rated short-time withstand current||kA||40|
|Rated short-circuit duration||s||4|
|Rated short-circuit making current||kA||100|
|Rated peak withstand current||kA||100|
|Rated insulation level||PF withstand voltage (1 min)||kV||Phase to earthPhase to phase||42|
|Lightning impulse withstand voltage||75|
JN17-12/40 earthing switch (ES-10/31.5) Outline and installation dimension
Copper terminal block
Hole location diagram
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