110kv Sf6 Circuit Breaker Load Break Switch for Gird Power Transformer

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vacuum
• Model NO.: SF6-110KV
• Poles Number: 1
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: VDE, ISO9001-2000, CE, CB
• Transport Package: Wooden Package
• Trademark: JUNKE
• Origin: Wenzhou
• Production Capacity: 1000PCS/Month

Product Description

110KV SF6 circuit breaker load break switch for gird power transformer 

Main features

Adopt self-extinguish principle, small operating energy, light mechanical impact;
Use spring mechanism, its performance is not relevant to temperature, stable performance;
Optimized interrupter structure and movement curve of contact, high reliability on breaking current;
Reignite and restrike cannot occur under breaking capacitive current;
Optimized pole and frame design with higher capability to endure earthquake;
High reliability, long average normal service time, low maintenance cost;
Convenient installation and configuration in field, it takes only one day or two days;
Low operating noise, suit for residential area.:

Environmental conditions

Installation site	outdoor
Ambient temperature	-25ºC~+40ºC
Max. daily temperature difference	≤25ºC
Height above sea level	2000m(no limit for specified order)
Air humidity	Daily average:≤95%; month average:≤90%;
Wind speed	≤34m/s
Solar radiation	≤0.1W/cm2(fine day, noon)
Earthquake intensity	horizontal:≤0.3g;vertical:≤0.15g
Icing thickness	≤10mm
Creepage distance	25mm/kV or 31mm/kV
Static load on terminal in Y-direction	1250N
Static load on terminal in X-direction	750N
Static load on terminal in Z-direction	1000N

Main Technical data

No.	Items			Unit	Parameter
1	Rated voltage			kV	110KV
2	Rated power frequency withstand voltage(1min)		Phase-to-phase Phase-to-ground	kV	230
			fracture	kV	230+73*
3	Rated lightning impulse withstand voltage		Phase-to-phase Phase-to-ground	kV	550
			fracture	kV	550+103*
4	Power frequency withstand voltage(5min)under SF6 zero-gauge pressure			kV	95
5	Rated frequency			Hz	50
6	Rated current			A	3150
7	Rated short circuit breaking current			kA	40
8	First-pole-to-clear factor				1.5
9	Rated short circuit breaking current (DC component)				More than 41%
10	Rated short circuit making current (peak)			kA	100
11	Rated short time withstand current(rms)			kA	40
12	Rated peak withstand current			kA	100
13	Rated short circuit duration			s	4
14	Rated out-of-phase breaking current			kA	3(OP1) ,10(OP2)
15	Short range breaking current			kA	36;30
16	Wrong-phase earthing fault breaking current			kA	34.8
17	Rated line charging switching current			A	31.5
18	Full capacity breaking time without check and repair			Times	20 or rated current breaking times:3000
19	Rated operating sequence				O-0.3s-CO-180s-CO
20	Rated SF6 pressure (20ºC gauge)			MPa	0.6
21	Alarm/Lock pressure(20ºC gauge)			MPa	0.55/0.50
22	SF6 annual leakage rate			%/Y	≯0.5
23	Gas moisture content	Check value after hand over		μL/L	≯150
		Allowed service value		μL/L	≯300
24	Resistance of the main circuit			μΩ	≤35
25	Mechanical life			Time	6000
26	Radio interference level (1.1Ur/)			μV	≯500
27	Allowed partial discharge intensity(1.2Ur)			pC	≤5
28	Noise(distance from sound source:horizontality:2m,height:1.5m)			dB	90