Products

33kv/72.5kv/123kv/ 145kv Outdoor Live Tank Sf6 Insulating Circuit Breaker

China 33kv/72.5kv/123kv/145kv Outdoor Live Tank Sf6 Insulating Circuit Breaker, Find details about China Circuit Breaker, Dead Tank from 33kv/72.5kv/123kv/145kv Outdoor Live Tank Sf6 Insulating Circuit Breaker

Model NO.
LW
Poles Number
1
Type
Circuit Breaker
Function
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection
Certification
ISO9001-2000
Trademark
HEMG
Transport Package
Carton with Wooden
Specification
33kv/66kv/132kv
Origin
China
Model NO.
LW
Poles Number
1
Type
Circuit Breaker
Function
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection
Certification
ISO9001-2000
Trademark
HEMG
Transport Package
Carton with Wooden
Specification
33kv/66kv/132kv
Origin
China

LW high voltage sulphur hexafluoride circuit breakers belongs to three-phase alternating current 50 Hz high voltage switchgear, which is mainly used for the control and protection of transmission line as well as used as the contact circuit breaker.

The product adopts mixed type self-arc extinguish chamber. The triple pole is equipped with one spring operating mechanism to conduct the tree-pole mechanical operating, so as to realize remote or local operation.
 

1.3. Operating ambient

1.3.1 Height above sea level: 2500 m (special order is available for the high elevation);
1.3.2 Ambient temperature: -30ºC~+40ºC(special orders are available under -30ºC)
1.3.3 Rated wind speed:34m/s;
1.3.4 Shock resistance: level 8;
1.3.5 Dirtiness level: l level III 25mm/kV and level :3.1cm/kV.

1.4.  Technical parameters

1.4.1 See table 1 for main technical parameters of the circuit breaker
Table 1
No.Name Unit     Value
LW-145
1
 		  Rated voltage
 		kV
 		145
 
2
 		  Rated current
 		A
 		1600,2000,3150
 
3
 		  Rated frequency
 		Hz
 		50/60
 
4
 		  Rated short time withstand current (4S)
 		kA
 		40
 
5
 		  Rated short-circuit period
 		S
 		4
 
6  Rated
short circuit
Dropout current 		  Short-circuit current kA40
 Percent for zero frequency component -45%
7
 		  Rated short circuit close current (peak value)
 		kA
 		100
 
8
 		  Rated peak withstand current 
 		kA
 		100
 
9
 		  Close-in fault drop-out current
 		kA
 		Ie×90% le×75%
 
10
 		  Rated step-out dropout current
 		kA
 		Ie×25%
 
11
 		  Rated line charging dropout current
 		A
 		31.5
 
12
 		  Initial pole factor
 		-1.5
 
13
 		  Rated operating sequence
 		-O-0.3S-CO-180S-CO
 
 
 
 
Table 1 (continued)
No. Name Unit Value
LW-145
 
14Rated insulation level1-min power frequency stand voltage (valid value for dry and wet)Open contact
 		kV275
 
Space in between
 		275
 
Over the ground275
 
Lightning surge
Stand voltage
(peak value)		Open contact750
 
Space in between650
 
Over the ground
 		650
 
5minZero gage pressure withstand test (valid value)Open contact105
 
Over the ground105
15
 		Open circuit time
 		ms≤60
 
16SF6 gas rated pressure (20ºC)
 		MPa0.55
 
Alarm pressure
 		0.50
 
Interlock pressure
 		0.45
 
17Terminal STVertical orientation
 		N1250
 
Horizontal orientation
 
 		750
 
Vertical direction
 		1000
 
l 8Inherent opening timeRated voltage
 		ms26~35
 
Low-voltage
 		26~35
 
19
 		Closing time
 		ms≤120
 
20
 		Opening synchronism
 
 		ms≤2
 
21
 		Closing synchronism
 		ms≤4
 
22Re-closing property
Opening-0.3S-closi-ng and opening		First opening time
 		ms26~35
 
Opening and closing time
 		ms280~300
 
Closing time
 
 		ms80~120
 
Closing and opening time
 		ms<50
 
Second opening time
 		ms26~35
 
23
 		Major loop circuit resistance for each pole
 		μOM
 		≤40
 
24
 		Control circuit voltage
 		V
 		DC110/DC220
 
25
 		Opening & closing coil voltage
 		V
 		DC110/DC220
 
26Opening & closing coil currentA3.67/2
27
 		Motor voltage
 		V
 		AC220/DC220
 
28
 		MotorW600
29  Heater voltage VAC220
30
 		  Mechanical life
 		times
 		6000(2000×3)
 
31
 		  Radio interference voltage
 		U V
 		≤500(2500)*2
 
32
 		  Leakage rate examination for SF6 gas
 		-≤1%
 
33
 		  Shell protection level
 		-IP4×
 
34
 		  SF6 gas is charged for each unit
 		kg
 		7
 
35  Gross weight for each unitkg2700
       
 

1.4.2 Mechanical parameters
See table 2 for mechanical parameters of the circuit breaker and the operating mechanism.
Table 2
No.
 		Item
 		Unit
 		Data
 		Remark
 
1
 		    Stroke
 		mm150+2-4
 		See figure 13 for stroke measuring
of the circuit breaker
2
 		    Contact stroke mm27±2
3
 		    Spring mechanism's piston rod stroke
 		mm1000-3
 
4Gap between the shear lever roller and the cam mm1.4±0.3As the Circuit breaker is in opening state,
the closing spring has been stored with energy.
5    Set nut for the closing spring
    Distance to the locating lever		mm≤55
6    Closing electromagnetic iron stroke C
 		mm5.0~5.5
 		The circuit
breaker is in the opening status, see figure 14
    Gap between the Flip-flop and the release device D2.0~2.5
    C -D
 		2.5~3.5
 
    Gap between the flip-flop and the de-bouncing bar E1.0~2.0
7    Closing electromagnetic iron stroke F
 		mm2.8~3.2
 		See table 15 for the on-position of the  circuit breaker
    Gap between the Flip-flop and the release device G0.8~1.2
    F - G
 		1.6~2.4
 
 
See table 3 for parameters of the control circuit and the secondary group circuit
Table 3
No.
 		Item
 		Unit
 		Data
 		Remark
 
1Opening & closing coil control voltageVDC110/220 
2
 		Opening coil currentA3.67/2 
3
 		Closing coil current
 		A
 		3.67/2
 		 
4Motor voltageVDC 220/
AC 220		As per purchase contract
5
 		Power of motor
 		W
 		600
 		 
6
 		Motor speed
 		r.p.m
 		530
 		 
7
 		Motor current
 		A
 		5.5/2.7
 		 
8HeaterVoltageVAC 220As per purchase contract
Power
 		W
 		100(250)
 
 
1.4.3 See table 4 for gas pressure parameter of SF6 (20ºC) (gage pressure)
Table 4
  No.
 		Item
 		Unit
 		Data
 
1    Rated inflation pressure Mpa0.55
2
 		    Alarm pressure for air-in
 		Mpa
 		0.50±0.02
 
3    Bottoming pressure of the circuit breaker Mpa0.45±0.02

33kv/72.5kv/123kv/145kv Outdoor Live Tank Sf6 Insulating Circuit Breaker

33kv/72.5kv/123kv/145kv Outdoor Live Tank Sf6 Insulating Circuit Breaker
 

You Might Also Like