XGN2-12(G) Fixed Type Metal-clad Switchgear

Summary

Product feature

XGN2-12 series fixed AC metal enclosed switchgear (short for panel as below) is a new product designed and developed byHEAG, based on the introduction of advanced foreign design and manufacturing technology. It applies to 3.6~12kV three phaseAC 50Hz single busbar or single busbar sectional transport, distribution system, as for receiving and distributing power energy, and realize to control, monitor and protect power circuit. It is widely used for power plant, substation, petroleum,metallurgy, chemical, natural gas and other civil field.

Structure feature：

1.XGN2-12 series is metal enclosed fixed switchgear, the body is welded with angle steel and steel board, inner and outer coating is solid by static spray plastic powder.

2.This panel conforms to GB3906 3-35kV AC Metal enclosed switchgear and international standard IEC62271-200   besides, prevent from opening and closing connecting switch with load, prevent from opening and closing c ircuit breaker,  prevent from entering into interval with electricity, prevent from closing earthing switch with electricity (five protections adopt  simple, reliable mechanical interlock device). The power indicator is installed in front of panel which reflect voltage in the side of circuit. When circuit side with electricity, lock the enclosed board and panel door.

3.Same type product and structure component can exchange each other.

4. Enclosure

4.1 The inner structure of panel is divided into circuit breaker compartment, busbar compartment, cable compartment,relay compartment, use steel plate to separate panels. Use eddy current steel plate and epoxy resin  busbar bushing to separate panel.

4.2 The panel adopts cold roll steel sheet and angle steel to weld together, without reticulation fabric, non-flame-resisting materials. Outer insulating creeping distance of components and supporting insulator, pure porcelain insulation≥ 1.8cm/kV, organic insulation ≥ 2.0cm/kV.The air distance of phase to phase, phase to earth ≥ 125mm. There is an intelligent hygrothermoscope to start or stop heater according to the humiture condition of circuit breaker compartment and cable compartment in panel, Prevent from forming moist and high temperature.

4.3 There is a viewing port for observing of closed and open position of upper, down connecting switch without open the door. The panel is double maintenance, inspect relay compartment equipments, operating mechanism, mechanical interlock and  transmission part in front, inspect main busbar, shunt circuit busbar, cable terminal, connecting switch and earthing switch.

4.5 Circuit breaker: The circuit breaker is located in the middle part, disconnecting switch and earthing switch and interlock mechanism are above it, and with indicator device, describe open and closed position.

4.6 Transformer: CT is mounted on the underpart of front side, connect with circuit breaker and connecting switch, main loop without electricity. It can carry out preventive test, inspection and exchange, the secondary wire of CT to earth reliably .

4.7 Disconnect switch and earthing switch: connecting switch, disconnect switch and earthing switch ca n be seen through  viewing port, controlled by a set of manual operating mechanism to assure of program and reliable locking for circuit breaker, disconnect switch and earthing switch, meet the requirement of five protection.

4.8 Measuring instrument, relay protection, monitor device and auxiliary circuit.

4.9 Earthing: It takes a consideration of 4 × 40mm2  copper busbar as earthing body along with whole width of all panel extending.

Technical specification

1. Primary wiring scheme to see table 1, primary wiring scheme combination to see table 2;

2. If used for high altitude, choose high altitude components, such as ZN28A-12GD;

3. Technical specification of panel to see table 3;

4. Technical specification of circuit breaker and operating mechanism:

No .	Item	Unit	Data
1	Rated voltage	kV	11
2	Highest voltage	kV	12
3	Rated current	A	630	1000	1000	1250	2000	2500	3150
4	Rated short circuit breaking current	kA	20		31.5			40
5	Rated short time withstand current(4s)	kA	20		31.5			40
6	Rated peak withstand current	kA	50		80			100
7	Rated short circuit making current(peak)	kA	50		80			100
8	Protection degree		IP2X
9	Operating type		Electromagnet type, spring charging type
10	Outline dimension(width × depth × height)	mm	1100×1200×2650

1. Rated current of plateau altitude switchgear: 630/1000/1250A

2.Outline dimension of plateau altitude switchgear: 1200 × 1350 × 2900mm

Item					Unit	ZN28A-12/1000-20	ZN28A-12/ 2000(1250)— 31(31)..5(5)	ZN28A-12/	2500-403150-40
Rated voltage					kV	10
Highest voltage					kV	12
Rated frequency					Hz	50
Rated current					A	1000	1250,2000	2500,3150
Rated short circuit breaking current					kA	20	31.5	40
Rated short circuit making peak current					kA	50	80	100
Rated short time withstand current					kA	20	31.5	40
Rated peak withstand current					kA	50	80	100
Rated short time withstand current duration					s	4
Mechanical endurance					Times	1000
Rated STC breaking times					Times	30(50)
Vacuum Interrupter vacuum degree					Pa	≤ 6.6X10-2
Arcing time					ms	≤ 20
		Type				CD10 I                                     CD10 Il                                  CD10 l
		Workingvoltage(V)	Open coil			110 ,      220
			Open coil			24,48,110,220
		Workingcurrent(A)	Close	110		196                                 240                                 294
				220		98                                   120                                  147
			Close	24		37
				48		18.5
				110		5
				220		2.5
						CT8-                                    CTB- Il
		Workingvoltage(V)	Storage motor			110 ,       220
			Shunt trip			-48 ,    110 ,   兮220
			No-voltage trip			~110(110) ,  ~220
		Storage time	s			必 5
		Over current trip	A			5
	Opening  time		s			DC electromagnetism  0.20 spring storage 0.15
	Opening  time					0.06

Outline and dimension

Drawing 1a XGN2-12-07D Outline Drawing

1.Busbar compartment   2.Pressure release channel   3.Metering compartment

4.Combination switch compartment   5.Manual operating and interlock mechanism

6.Main switch compartment   7.Electromagnet or spring mechanism

8.Earthing busbar   9.Cable compartment

Drawing 1b XGN2-12(G)  Basic Reference Drawing

1.Busbar compartment   2.Pressure release channel   3.Small busbar compartment

4.Metering compartment   5.Transfer switch compartment

6.Disconnect switch operating and interlock mechanism

7.Circuit breaker compartment   8.Circuit breaker operating mechanism

9.Earthing busbar   10.Cable compartment    11.Overhead inlet-outlet extra panel   12.Busbar bushing