China FZW32-12(40.5) Load Switch Manufacture and Factory

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FZW32-12(40.5) Load Switch

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FZW32-12(40.5) Load Switch

FZW32-12 (40.5)outdoor MV isolatingvacuum load switch is a newtype of load switchwhich is the integration of mature experience of domestic existingload switch and advancedtechnology design of external.This load switch is composedof isolating switch,vacuum interupter and operating mechanism and other parts.By using the principle ofvacuum interrupter,with strong arcing ability,reliableperformance,long service life,small volume,no explosion danger,no pollution etc advantage.Theproduct can be used in transmission and distributionsystem ofelectric power,metallurgy,mine,chemical industry and other departments as control equipment,especially suitable for frequent operation place

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Features

FZW32-12 (40.5) type outdoor high voltage isolating vacuum load switch adopts the vacuum arc extinguish chamber, no explosion danger, no maintenance. The load switch isolation knife linkage with a three-phase vacuum interrupter, breaking and closing operation in good same period, and with reliable isolation fracture when breaking, namely has the function of isolation switch. Most of the switch body parts are made of stainless steel materials, the base frame is made by stainless steel materials or hot dip galvanizing and UV protection coating processing material, can effectively prevent corrosion and rusting, ensure the normal operation in the outdoor environment. Switch knife with a pressure spring, ensure that contact with sufficient contact pressure, such not only convenient operation, and can guarantee the reliability of switching.
The isolating fracture and arc fracture of the load switch are in parallel during the opening and closing process, the arc fracture as arc, does not bear the load current task, while the isolation fracture only undertake the load current and short circuit closing task, not to participate in the arc, which not only simplifies the arc structure, and the whole structure of switch simple, stable performance; installation and operation convenient and reliable, long service life. It is a kind of economic, ideal outdoor switchgear.
The handle hook rod actuator; the operating handle is mounted on the load switch spindle end, and fastened by nuts, both ends of the handle are marked with "opening", "closing" instructions, the operator may according to need to use hook rod to hook the end of ”opening”or“closing”, to make the spindle rotate, spring past middle mechanism drive the isolation knife assembly and vacuum interrupter actuator motion, namely relize the switch breaking and closing. (this applies to 12kV)
Under rod mechanism operating; the load switch is installed at the upper part of the wire rod, operating mechanism is arranged in the lower part, ensure that the handle keep away from the ground not more than 1100mm, if the operation of connecting rod is more than three meters should add support guide in the middle of rod. (operating mechanism and guide support as the product accessories supply to the user) (this applies to 12kV)
Electric operation (this applies to 12kV/40.5kV)

Operating conditions

1. Ambient temperature: upper limit +40℃, lower limit -30℃; Days difference does not exceed 32K;
2. Altitude: 1000m and the following areas;
3. Wind pressure: no more than 700Pa (corresponding to the wind speed 34m/s);
4. Air pollution level: IV class
5. Earthquake intensity: do not exceed 8 degree;
6. Ice thickness: no more than 10mm.

Technical data

Item			Unit	Parameter
Load switch main technical parameters and mechanical properties
Rated voltage			kV	12	40.5
Rated current			A	630	1250
Rated frequency			Hz	50	50
Rated peak withstand current			kA	50	63
Rated short-time withstand current			kA	20	25
Rated short-time withstand current duration			S	4	4
Rated active load breaking current			A	630	1250
Rated closed loop breaking time			A	630	1250
Rated cable charging breaking current			A	10	10
5% at rated active load breaking current			A	31.5	63
Rated no-load transformer breaking current rated capacity			kVA	1250	1250
Rated short-circuit closing current			kA	50	63
The main circuit of electronic			μΩ	≤150	≤100
1min power frequency withstand voltage(RMS)	Dry test	Between poles and poles to the ground	kV	42	95
	Wet test	Isolating fracture	kV	48	110
	Wet test	Between poles and poles to the ground	kV	30	85
Lightning impulse		Between poles and poles to the ground	kV	75	185
withstand voltage (peak)		Isolating fracture	kV	85	215
Mechanical life			Times	10000	10000
Three-phase, switching in different period			ms	≤5	≤5
The contact blade just close position deviation			mm	≤2	≤2
The main contact blade pressure			N	300±30	450±50
The contact blade distance			mm	≥180	≥380
Manual operating torque			Nm	≤200	≤300
Load switch vacuum arc extinguishing chamber assembly and adjustment technology
Open clearance between contacts			mm	5±1	18±1
Average opening speed			m/s	1.1±0.2	1.6±0.2
Three phase opening different period			ms	≤5	≤5
Three phase closing different period			ms	≤5	≤5
Distance between the charged body and the pole to ground			mm	> 200	> 380