12kv/24kv Switchyard Compact Efficient High Voltage Vacuum Circuit Breaker

Product Name: 12kv/24kv Switchyard Compact Efficient High Voltage Vacuum Circuit Breaker Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection) Type: Circuit Breaker Poles Number: 1 Structure: MCCB Installation: Insert Arc-extinguishing Medium: Vacuum Speed: Normal Type Circuit Breaker Operation: Energy-storage Type Breaking Capacity: High Voltage Circuit Breakers Transport Package: Plywood Box Origin: China HS Code: 85389000 Product Description High voltage vacuum circuit breakerReal photograph show Detailed description1. General1.1 Name and modelZN39-40.5C/D(T) serial indoor high-voltage vacuum circuit breaker. 1.2 Main application, use range and site conditionZN39-40.5C/D(T) serial indoor high-voltage vacuum circuit breaker is of indoor high-voltage distribution device with technical parameter as 3ph, 50Hz and rated voltage of 40.5kV, which is mainly applicable for JYN1-35 type movable AC metal closed switch device and its renovation. That it can be used in acceptance, control and protection of electric energy from industrial company, power plant and distribution, especially for the site where frequently operation is needed. 1.3 Normal operation conditiona. Atmosphere temperature upper limit +40ºC lower limit -10ºCb. altitude a.s.l no more than 1000m. c. humidity Relative humidity: the average value per day no more than 95%, 90% per month. Saturated vapor pressure: the average value per day no more than 1.2×10-3MPA, 1.8×10-3MPa per month.d. others un-noted should conformity with requirements of d, e, f, g of item 3.1 of GB11022-1989. 1.4 Outlook drawing can be seen Pic. 1, Pic. 2, Pic. 3 and Pic. 4. 2. Technical parameter2.1 Main technical parameter can be seen in sheet 1. 2.2 Main mechanical parameter can be seen in sheet 2. 3 Structure and working principle3.1 StructureStructure of ZN39-40.5C/T type breaker can be seen Pic. 1 and Pic. 2, and ZN39-40.5C/D type can be seen Pic. 3 and Pic. 4. Both the breaker are of hand trolley type which can be put into movable AC metal closed switch cabinet of JYN1-35 and GBC-35 type, and it can be used separately as well. Each vacuum interrupter was supported by 3 pcs of insulator to get stable structure and easy installation. Electro-magnetic operation mechanism is of CD10-11 type, spring operation mechanism is of CT19BN-1 type. 3.2 Inter-lock system can be seen in Pic. 1, Pic. 2, Pic. 3 and Pic. 4The breaker can not be closed when the hand trolley was located between working position and test position where the lock pin did not insert the location hole on hand mechanism (no. 24 on the pic.). Operate the hand mechanism (no. 24 on the pic.) to make bend arm on components of no. of 19 to be integrated with cabinet when the hand trolley comes to test position or working position, then the breaker will be locked by inter-lock device after breaker closing, so, the tripping of breaking because of mis-operate the hand trolley under closing can be avoided. For emergency, the hand mechanism (no. 24 on the pic.) can be operated to release lock from lock pin, that the breaker can be tripped. Sheet 1 Main technical parameterS/NParameterUnitValue1Rated voltagekV40.52Rated currentA1250, 1600, 20003Rated frequencyHz504Rated short-circuit breaking currentkA20, 25, 31.55Rated short-circuit closing currentkA50, 63, 806Rated peak withstand currentkA50, 63, 807Rated short time withstand currentkA20, 25, 31.58Rated short time continue S49Rated operation orderO-0.5s-CO-180s-CO10Rated breaking current of single capacitorA40011Rated breaking current of back-to-back capacitorA40012Rated closing inrush of capacitor (frequency≤1000Hz)kA8.013Short-circuit breaking current under different phase ground faultkA17.4, 21.75, 27.414DC component percentage of short-circuit test on output side40%15Rated insulation level1min power frequencyGround, polekV95Withstand voltageGap kV95Lighting shockGround, polekV185Withstand voltageGap kV18516Breaking timems≤8017Mechanical lifetimes1000018Breaking times under rated short-circuit breaking currenttimes1219Arcing timems15≤3.3 Arc-control principleThe average free stroke of gas molecular is large in vacuum that the gas is hard liberation. Insulation strength of vacuum is much higher than of atmosphere, when the switch opening, the arc will be appeared between contact, and the surface of contact will generate metal vapor under high temperature. Where magnet field will be occurred when current passing through it because of special phase on the design of contact. The arc will go fast along tangential direction of contact surface with the force from this magnet field. The result is, there are some metal vapor on the shield cover, that the arc will be extinguished when it pass through zero and the dielectric strength between contact will be back quickly. Sheet 2 Mechanical parameterS/NParameterUnitValue1Contact open distancemm22±22Contact strokemm6±13Allowable contact abrasion thicknessmm≤34Average closing speedm/s0.6±0.25Average open speedm/s1.6±0.36Contact closing elastic timems≤57Contact closing asynchronous ms≤28Contact open asynchronousms≤29Open contact re-bound valuemm≤210Closing timems30≤t≤10011Open timems30≤t≤6012C - O timems≤9013Main circuit resistanceμ Ω≤8014Buffer distancemm10-24. Transport, acceptance and storageDuring transportation, the VCB can not be turn-over, great shake or raining. The user should do the following work and pay attention to the items when VCB arrived. 4.1 Check to find if package is damage or damp. 4.2 Open the box to pick up packing list, and to find if attached documents are complete or not. 4.3 Check to find the technical parameter on the name plate of VCB conformity with order requirements. 4.4 The conduct surface should be painted with industrial Vaseline and cover the insulate parts with clean oil paper when the VCB are left for a long time. 4.5 The VCB should be stored indoor of dry and ventilation. 5. Installation5.1 Inspect before installationOpen the box of VCB to check nameplate, certification, packing list and so on is complete, the equipment is totally conformity with order requirements. Clean the surface dust or dirt, then, take 75kV/min power frequency of frequency withstand method to check the gap, the pole, the ground to find no continue flashover, discharging......More technical specification can be available against your RFQ, thank you !