Audited Supplier
LW24
High Voltage Circuit Breakers
Electric Type
Normal Type Circuit Breaker
SF6
Open Frame
Dead Tank
3
Circuit Breaker
CCC
3
Outdoor
40.5kv to 252kv
2000A, 3150A
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
Type LW24- /T outdoor H.V. A.C. dead tank SF6 gas circuit breaker is a new kind of circuit breaker with self-blast interrupter and spring operating mechanism, developed by Xi'an XD High Voltage Apparatus Co.,Ltd. (former Xi'an High Voltage Apparatus Works), on the basis of technology of product imported from Mitsubishi, Japan.The latest achieve-arc extinguishing principle of gas-blast pressure adapting with breaking-current is employed,by which most of energy required for breaking rated short-circuit current are acquired from arc itself.Therefore, the demand for operating power is reduced signifcantly. The three pole interrupters are placed inside three metal enclosures respectively.
The circuit breaker can be mechanically three-phase gang-operated. Both remote electrical control and local manual control can be real- ized. Type CT20-II spring operating mechanism, provided with the product, is a kind of mechanism with low operating power, minimum maintenance work needed and high reliability. The product reaches international advanced level in the respect of main technical performance.
2.Normal Service Conditions
2.1.Altitude: ≤3000m
2.2.Humidity monthly: ≤90%
2.3.Max .wind velocity: ≤35m/s
2.4.Pollution class: IV class
2.5.Ambient air temperature: -35ºC~40ºC(It's satisfed under condition of -40ºC in heavy cold area)
2.6.Max .temperature difference daily: 25K
2.7.Earthquake withstand density: 9 degree
2.8.Ice coating: ≤10mm
2.9.Max. radiance from sun: 1000 W/m2
Note: When product is used under the condition out of above range, user and manufacturer shall consult to confrm.
| No | Item | Unit | LW24-40.5 | LW24-72.5 | LW24-125T LW24-145T | LW24-252/T | |
| 1 | Rated Voltage | kV | 40.5 | 72.5 | 126 | 145 | 252 |
| 2 | Rated Normal Current | A | 3150 | 4000 | |||
| 3 | Rated Frequency | Hz | 50 | ||||
| 4 | Rated Short Circuit Breaking Current | kV | 40 | 40 | 40 | 31.5 | 50 |
| 5 | Rated Short-Time Withstand Currend And Duration | kV | 40 (4s) | 40 (4s) | 40 (3s) | 31.5 (3s) | 50 (3s) |
| 6 | Rated Peak Whithsand Current | kV | 100 | 100 | 100 | 80 | 125 |
| 7 | Rated Making Current (Peak) | kV | 100 | 100 | 100 | 80 | 125 |
| 8 | Rated Short Time Power Frequency Withstand Voltage(Rms) | ||||||
| Between Breaks | kV | 95+23.4 | 160+42 | 315 | 460+145 | ||
| To Earth | kV | 95 | 160 | 275 | 460 | ||
| 9 | Rated Lightning Impulse Withstand Voltage | ||||||
| Between Breaks | kV | 185+33 | 350+59 | 650+100 | 1050+200 | ||
| To Earth | kV | 185 | 350 | 650 | 1050 | ||
| 10 | Creepage Distance | mm/kv | 31 | 31 | 25, 31 | ||
| 11 | Breaking Time | ms | ≤60 | ≤60 | ≤60 | ||
| 12 | Opening Time | ms | ≤30 | ≤30 | ≤30 | ||
| 13 | Closing Time | ms | ≤100 | ≤100 | ≤100 | ||
| 14 | Mechanical Endurance | Tim | 1000 | ≤5000 | |||
| 15 | Rated Operation Sequence | ||||||
| 16 | Rated Pressure Of SF6 Gas (at20ºC) | MPa | 0.50, 0.40 | 0.5 | 0.60 | ||
| 17 | Alarm/Lock Pressure Of SF6 Gas | MPa | 0.45, 0.40; 0.35/0.30 | 0.45/0.40 | 0.55/0.50 | ||
| 18 | Rated Voltage Of Control Circuit | V | DC220/110 | ||||
| 19 | Rated Voltage Of Energy-Store Motor Circuit | V | DC220/110, AC220 | ||||
| 20 | Breaking Number Of Rated Short-Circuit Breaking Current | Time | 20 | ||||
| 21 | Rated Back-To-Back Capacitor Back Breaking Current | A | 1500 | 2000 | |||
| 22 | Rated Shunt Reactor Switching Current | A | 1600 | 1500 | |||
| CT | Datasheet | ||
| NO | Transformation Ratio | Accuracy | Output Capacity |
| 1 | 100-2000 | 0.5 class | 10VA-50VA |
| 2 | 200-2000 | 0.2 class | 5VA-50VA |
| 3 | 100-2000 | 10P10 | 10VA-50VA |
| 4 | 200-2000 | 10P15 | 10VA-50VA |
| 5 | 200-2000 | 10P20 | 5VA-50VA |
