Audited Supplier
LW15
High Voltage Circuit Breakers
Electric Type
Normal Type Circuit Breaker
SF6
Fixed
Porcelain
3
Circuit Breaker
Conventional Circuit Breaker, Overcurrent Protection, OVP(Overvoltage Protection)
CE, CCC
3
Outdoor
40.5kv to 550kv
2000A, 3150A, 4000A, 5000A
XD
Non-Fumigation Wooden Box
Please refer to the attachment
China
8535291000
Product Description
Outdoor High Voltage Porcelain Type SF6 Gas Power Circuit Breaker for Substation.
1.General
H.V.A.C.porcelain type SF6 gas circuit breakers, with voltage from 40.5-550kV and rated current up to 4000A, manufac-tured by our company, are provided with three kinds of operating mechanism, pneumatic, spring and hydraulic type. Motor is used in spring mechanism to charge closing spring and charge opening spring at closing. Disk spring is used in hydraulic mechanism to be charged in stead of traditional compressed nitrogen gas for charge, and hydraulic driv ing is used at both opening and closing. Compressed air is used in pneumatic mechanism as driven force for open while spring is used for close. The three kinds of operating mechanisms have their own features and are used in circuit breakers of different voltage class respectively.Due to the unit structure in circuit breaker, there are advantages of mini-mized number of breaks,lower number of parts, simple structure,high reliability and long period of inspection.
LW25-252/T4000-50 circuit breaker with spring operating mechanism was developed and fnished testing in Sep. 2006.
LW25D-126 (145)/T3150-40 (31.5) single-phase operated circuit breaker with spring operating mechanism was developed and fnished testing in Dec. 2006.
LW25A-252/Y4000-50 three-phase mechanically circuit breaker with hydraulic operating mechanism was develped and fnished testing in Jan. 2007.
LW25-126/T4000-40 special circuit breaker for reactive compensation fnished appraisal with swithing back-to-back capacitor bank current of 1600A, switching reactor in series current of 1600A, breaking single capacitor bank current of 3500-4000A, whinch can meet the requirement of general switchgear and branch switchgear for reactive compensation in UHV.
220kV and above circuit breakers with "XD" brand awarded "China awarded Brand" in Sept . 2007.
2.Normal Service Conditions
2.1 Altitude:≤1000m
2.2 Average relative humidity monthly:≤90%
2.3 Max.wind:≤35m/s
2.4 Pollution class: Third, Class: Fourth class
2.5 Ambient temperature :-35ºC~40ºC
(It's satisfed under the condition of -40ºC in heavy cold area)
2.6 Max.temperature difference daily:25K
2.7 Earthquake intensity:8 degree
2.8 Max.iced thickness:10mm
2.9 Max. radiance from sun:1000W/m2
Note: When product is used under the condition out of above range,
user and manufacturer shall consult to confrm.
| No | Ltem | Unit | LW9-40.5/T | LW9-72.5/T LW9A-72.5/T | LW25-126T/145T LW25D-126T/145T | LW25-252T LW25A-252/Y | LW15B-252/Y LW15-252/Q | LW-252/Y | ||
| 1 | Rated Voltage | KV | 40.5 | 72.5 | 126/145 | 252 | 252 | 252 | ||
| 2 | Rated Frequency | Hz | 50 | 50 | 50 | 50 | 50 | 50 | ||
| 3 | Rated Normal Current | A | 3150/4000 | 3150/4000 | 2000. 3150. 4000 | 4000 | 3150. 4000 | 4000. 5000 | ||
| 4 | Rated Short-Circuit Breaking Current | KA | 50 | 31.5/40 | 31.5/40 | 40. 50 | 50 | 63 | ||
| 5 | Rated Short-Circuit Making Current | KA | 125 | 80/100 | 80/100 | 100. 125 | 125 | 160 | ||
| 6 | Rated Short-Time Withstand Currend And Duration | KA | 50(3s) | 31.5/(4s)/40(4s) | 315/(4s)/40(4s) | 40/(4s)/50(4s) | 50(4s) | 63(3s) | ||
| 7 | Rated Peak Whithsand Current | KA | 125 | 80/100 | 80/100 | 100. 125 | 125 | 160 | ||
| 8 | Short-Line fault breaking Current | KA | le×90% | le×75% | ||||||
| 9 | Rated Out-Of-Phase BreakingCurrent | KA | le×25% | |||||||
| 10 | Creepage Distance | cm/KV | 3.1 | 3.1 | 2.5. 3.1 | 2.5. 3.1 | 2.5. 3.1 | |||
| 11 | 1Min Power Frequency Withstand Voltage | Dry Test | Across Open Breaks To Earth | KV | 95+23.4 95 | 160+42 160 | 230+95 275 | 460+145 460 | 520+165/520 460 | |
| Wet Tese | Across Open Breaks To Earth | KV | 95 95 | 160+42 160 | 230+95 275 | 460+145 460 | 460+145 460 | |||
| 12 | Rated lightning Impulse Whithstand Voltage | Across Open Breaks To Earth | KV | 185+33 185 | 350+59 350 | 650+100 650 | 1050+200 1050 | 1188+226/1188 1188 | ||
| 13 | 5Min.Power FrequenceyWithstand Voltage Under Zero -Gauge pressure | KV | 1.3×40.5×√3 | 1.3×72.5×√3 | 1.3×145×√3 | 1.3×252×√3 | 1.3×252×√3 | |||
| 14 | Closing Time | ms | ≤150 | ≤150 | ≤150 | ≤110 | ≤110 | 55-80 | ||
| 15 | Opening Time | ms | ≤30 | ≤30 | ≤30 | ≤30 | ≤25 | 14-30 | ||
| 16 | Breaking Time | ms | ≤60 | ≤60 | ≤60 | ≤60 | ≤50 | ≤50 | ||
| 17 | Close-Open Time | ms | 40-60 | 40-60 | 40-60 | 50-70 | 40-60 | 40-60 | ||
| 18 | Operating Asynchronism Between poles | Open | ms | ≤2 | ≤2 | ≤2 | ≤30 | ≤3 | ≤3 | |
| Close | ms | ≤4 | ||||||||
| 19 | Rated Reclose Operating Sequence | O-0.3s-CO-180s-CO | ||||||||
| 20 | Rated Pressure Of SF6 Gas | Mpa | 0.5 | 0.50 ;0.40 | 0.5;0.40 | 0.60; 0.40 | 0.6 | 0.60 | ||
| 21 | Alarm/Lock Pressure Of SF6 Gas | Mpa | 0.45/0.40 | 0.45/0.40; 0.35/0.3 | 0.45/0.40; 0.35/0.30 | 0.55/0.50;0.35/0.33 | 0.55/0.50 | 0.55/0.50 | ||
| 22 | Annual Leakage Of SF6 Gas | % | ≤0.5 | |||||||
| 23 | Number Of Breaks Per Pole | Piece | 1 | |||||||
| 24 | Opening Time Of Mechanisem | Times | ≥10000 | |||||||
| 25 | Load On teminal In Y-Direction | N | 750 | 750 | 1250 | 1500 | 1500 | 1500 | ||
| 26 | Load On teminal In X-Direction | N | 500 | 500 | 750 | 1000 | 1000 | 1000 | ||
| 27 | Load On teminal In Z-Direction | N | 750 | 750 | 1000 | 1250 | 1250 | 1250 | ||
| 28 | Resistance Of Man Circuit | ≤50 | ≤50 | ≤45 | ≤45 | ≤42 | ≤42 | |||
| 29 | Operating Mechanism | Spring mechanism | Spring mechanism | Spring mechanism | Spring Mechanism Or Hydraulic Mechanism | Hydraulic Mechanism OrPneumatic Mechanism | Hydraulic Mechanism | |||
| 30 | Weight Of SF6 Gas Filled For Each CB | kg | 6 | 4 | 6 | 30 | 30 | 30 | ||
| 31 | Weight Of One Set Of CB | kg | 1100 | 1100 | 1400/2100 | 3500 | 4000/4500 | 3700 | ||
| 32 | Applied Standards | GB/T1984, IEC62271-100, DL/T402 | ||||||||
