1.Overview
Three-phase AC 50Hz outdoor high-voltage switchgear, used in the 10kV electrical power systems of rural power grid and urban power grid for opening and closing load current, overload current, and short circuit current, and in other similar applications.
2.Technical Parameters
 

No.	Parameter Name			Unit	Value
1	Rated voltage			kV	12
2	Rated current			A	630、1250
3	Rated frequency			Hz	50
4	Rated insulation level	Power frequency withstand voltage for 1 minute	Dry test	kV	P/phase to phase, P/phase to earth: 42 O/open contacts: 48
			Wet test		34
		Lighting impulse withstand voltage (peak)			P/phase to phase, P/phase to earth 75 O/open contacts: 85
5	Rated circuit-breaker breaking current			kA	20	25
6	Rated short-circuit making current (peak)			kA	50	63
7	Rated peak withstand current			kA	50	63
8	4s thermal stability current			kA	20	25
9	Rated operating sequence				O-0.3s-CO-180s-CO
10	Closing time			ms	≤50
11	Opening time				≤45
12	Rated short-circuit breaking current ON/ OFF times			Times	30
13	Mechanical life				10,000
14	Control circuit and auxiliary circuit, power frequency withstand voltage for 1 minute			V	2000
15	Rated operating voltage and auxiliary voltage				AC/DC220、DC110/48/24
16	Rated current of overcurrent trip coil			A
17	Allowable wear thickness of dynamic and static contacts in arc extinguish chamber			mm	3

3.Operating Conditions
3.1  Ambient air temperature: Max. temperature: +55℃; Min. temperature: -40℃; Max. daily temperature difference: 25K;
3.2 Relative humidity: Daily mean is not greater than 95%, and monthly mean is not greater than 90%;
3.3 Altitude: Not exceed 2,000 meters;
3.4 Wind: Not exceed 35m/s (equivalent to air pressure 700Pa);
3.5 Pollution degree 4;
3.6 Radial thickness of ice: 10mm;
3.7 Earthquake resistance: horizontal acceleration: 0.3g/s 2; vertical acceleration: 0.2g/s 2;
3.8 Installed in places free of fire, explosion, chemical corrosion and frequent severe vibration.
Please contact the manufacturer for customizing those failed to follow the normal working conditions.

4.Features
4.1  The product mainly consists of three-phase pole, spring operating mechanism, drive system, conducting loop, control unit and housing (made of ordinary carbon steel spray or stainless steel). The overall structure is of the three-phase pole type with miniaturization design, full-closed structure and good sealing property, especially suitable for cold and wet areas;
4.2  The efficient and reliable spring operating mechanism (manual or electric; with manual functions or near-distance remote control for the electric type), featuring with low-power energy-storage motor and low opening and closing energy consumption. The operating mechanism is sealed in the box to effectively prevent rust to parts, guaranteeing the reliable action of mechanism;
4.3  The pole is made of imported epoxy resin and coated with silicone rubber featuring with high temperature, low temperature, ultraviolet ray and aging resistance;
4.4  An external two-phase or three-phase protective current transformer is provided to realize overcurrent protection and fault current quick-break protection together with inrush current, and the protection delay time can be adjustable;
4.5  The interphase protection CT and zero-sequence CT integrated structure can be configured to realize parameter setting, single-phase grounding protection, three-section protection, reclosing, and fault accident memory together with the intelligent controller (the external power supply PT is used to supply the operating power); the controller has the corresponding communication module with data uploading to master station, fault feedback and “four-remote” functions to form an intelligent circuit breaker achieving distribution network automation;
4.6  The circuit breaker can be equipped with an isolating knife switch (at single or dual sides) with three-phase linkage to form an obvious isolating distance at the incoming (outgoing) side; a reliable mechanical anti-misoperation interlock is provided between the main switch and the isolating switch to guarantee safe and reliable operation.

5.Outline and Installation Dimensions
5.1 ZW32-12 circuit breaker outline (with CT for miniaturization)

			E060	LV & MV Apparatus
	LV & MV Apparatus

5.2 ZW32-12G/T Circuit breaker outline drawings (with CT for conventional type)

5.3 ZW32-12G circuit breaker outline (with CT for conventional)

1. Circuit breaker 2. Voltage transformer (power supply) 3. Voltage transformer mounting bracket 4. Intelligent controller (box type) 5. Electric pole 6. Circuit breaker mounting bracket

LV & MV Apparatus

5.4 ZW32F-12/T Circuit breaker installation diagram (hood type intelligent type)

1. Circuit breaker
2. Voltage transformer (power supply)
3. Voltage transformer mounting bracket
4. Intelligent controller (box type)
5. Electric pole
6. Circuit breaker mounting bracket

6.Ordering Notice
6.1 Product model, name, specification, and quantity;
6.2 Rated current, rated short-circuit breaking current;
6.3 Pole type (split type, integrated type or solid-sealed type);
6.4 Three-phase or two-phase current transformer transformation ratio, accuracy and capacity;
6.5 Zero-sequence transformer (independent or combined) transformation ratio, accuracy and capacity;
6.6 Operating mechanism type (manual or electric) and operating voltage;
6.7 Configuration requirements of voltage transformer (quantity, transformation ratio, accuracy and capacity);
6.8 Configuration requirements of controller (structure type, functions, and interfaces);