Operating conditions
1.Amblent temperature-10-+40C
2.Attude s1000m sensor heght140mm)
3.Rdatvehumidity:Day average relativehumbdity s95%Monthaveragerelative humbditys90%
4.Earthquake lintensity:s8degree
5.Dirtinessdegrce:1

JN15-24 series indoor earthing switch is a new design and improved product of our company according to the JN15 type,theinstaling size without any changelsuitable for electric power system with 20-24KV,Three-phase,AC 50(60)Hz,supported withvarious kinds of HVswitchgear and as ear thingprotection.
Standard:IEC129,JEC 62271-102

JN22-40.5/31.5 series indoor MV earthing switch is researched and developed by XIAN HV Electric research organization,withadvanced design and steady performance,simple structures,simple mounting and adjustment,suitable of electric power system with 40.5KV,Three-phase,AC 50Hz.Support with KYNo-40.5 and other various kinds of MV switchgear and as earthingc protection.
Standard:IEC129,IEC 62271-102

JN22-40.5/31.5series indoorMV earthing switchis researched and developed by XIAN HV Electric research organization,withadvanced design and steady performance,simple structures,simple mounting and adjustment,suitable of electric power system
with 40.5KV,Three-phase,AC 50Hz.Support with KYNo-40.5 and other various kinds of MVswitchgear and as earthingprotection
Standard:IEC129,IEC 62271-102

This product can be used in indoor system of AC50Hzand rated voltage of 3.6-40.5KV to protect thevoltagemutual-inductor from over loading and circuit break.(tested by-inductor from overloading and circ-uit break.(Tested by National high-voltage quality
Supervising and Testing Center,inaccordance with IEC282-1).

The product can be used in indoor AC system of 50Hz and rated voltage 3.6kV and 7.2KV 12KV.When used togetherwith otherprotectionfacilitlesuch as switches and vacum contactors).it works to protect high-voltagemotor and other electric facilitiesfrom overloadingandcircrit break.

The product is used in overload or short-circuit protection for electric transformer.The current limiting means that the fuse will cut off the circuit before the short-circuit currentreaches thepeak value

The product is used in overload or short-cicuit protection for instrumenttransformer.Atthetime of holdingupbyrestrain circuitcurent way to get minimum from carry on instantaneous to turn on and breakjt should be witintherangeof 0.6-1.8A to fuse theelectric current in one minute.