Operating conditions
1.Suitable for environments with an upper limitof 40℃and a lowerlimit of -30℃
2.Altitude notexceeding 1000m,wind speed not exceeding 35m/s
3.Fusesarenot suitable forthefollowing locations
3.1 Places with fuel or explosion hazards.
3.2 Places with severe vibration or impact.
3.3 Areas with abnormal electrochemical gas effects and severe airpollution and smoke

The zine oxide arrester is the mostadvanced over-voltage protector in the world,Due to make the risistordisc of core componetmainy adopt zine oxide arrester.Compared with the conventional silicon carbide arresterthis presciption of theproduct improvesgr-eatly the volt-Ampere characterisics of the resistor disc andincreased through-currentcapability at over-voltage so as to dring arad-icalchangesforthe characteristics of the arresters.

Technical data
1.Standard:GB1207-2006 voltage transformer
2.Technical parameterform
3.The creepage of product surface complywith Grade ll ofpollution.
4.Other technical parameter pleaserefers to tablebelow

JDZ3-3,6,10(Q)type single-phasedouble coil voltage transformer of epoxy casting insulationfor indoor device use,is used formeasurement of voltage and electric energy,relay protection in the AC circuit of rated frequency 50Hz as wellas other controldevicepower.(refer to figure 1 wiring diagram)
JDZ0)-3,6,10(Q)type single-phase double coil voltage transformer of epoxy casting insulation for indoor device use is used formeasurement of voltage and electric energy,relay protection in neutral non-direct earthing system of rated frequency 50Hz aswell asfor other control device power(refer to figure2 wiringdiagram)
Standard.IEC61869-3

GW5 outdoor MV isolating switch isused for three-phase AC 50Hz outdoor high voltage electrical equipment,used for the line toswitching under voltagepressed no load condition,and electrical isolation the maintenanced high voltage bus,circuit breakersand other electrical equipment and chargedhigh voltage line,canalso be used for the opening and dosing small capacitanceorinductance current.When the knife in the normal break position,can provide a insulation distance consistent with safetyrequirements.Widely used in 35~110kV substation

GW4 outdoor MV isolation switch is used for three-phase AC 50Hz outdoor high-voltage electrical equipment,switching of linesunder high-voltage no-load conditions,and electrically isolating electrical equipment such as high-voltage busbars,circuitbreakers,and live high-voltage equipment for maintenance voltage lines,can also be used to switchsmall capacitor or inductorcurrent.Whenthe knifeis in the normal open circuit position,it can provide insulation distancethat meets safety requirements Widely used in 35-110kV substations

Operating conditions
1.The altitude does not exceed1000m;
2.Ambientair temperature:-10℃~+40℃;
3.Relative humidity:dailyaverage value is not greater than 95%,monthlyaveragevalue is not greater than 90%;
4.Contamination grades:no serious dust,corrosiveand explosive material place;
5.Earthquake intensity:do notexceed 8 degree;No regularviolent vibration place.