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40.5KV Outdoor Frame - Type SF6 Circuit Breaker / High - Speed Air Circuit Breaker

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40.5KV Outdoor Frame - Type SF6 Circuit Breaker / High - Speed Air Circuit Breaker

China 40.5KV Outdoor Frame - Type SF6 Circuit Breaker / High - Speed Air Circuit Breaker supplier

Large Image :  40.5KV Outdoor Frame - Type SF6 Circuit Breaker / High - Speed Air Circuit Breaker

Product Details:

Place of Origin: CHINA
Brand Name: Tianan Electric
Model Number: LW8-40.5

Payment & Shipping Terms:

Minimum Order Quantity: 1set
Price: Pending
Packaging Details: wooden cases
Delivery Time: 35 work days
Payment Terms: T/T, L/C, D/A, D/P
Supply Ability: 1000sets per year
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Detailed Product Description
Function: Overcurrent Protection Rated Current: 2000
Rated Voltage: 40.5KV Mechanical Endurance: 5000 Time

40.5KV Outdoor Frame - Type SF6 Circuit Breaker / High-Speed Air Circuit Breaker

 

Overview

LW8-40.5 Type Outdoor AC HV SF6 Circuit Breaker is a kind of outdoor HV electrical equipment, three-phase, AC 50Hz. it is used not only for control and protection for 35kV power transmission and distribution system, but also for connecting circuit breaker and opening and closing capacitor bank, as well as for measurement and protection when it is equipped with current transformer.

This circuit breaker is equipped with CT14 type spring operating mechanism. And it is conformed to the requirements of the standard of GB1984-89 and IEC56 .

 

Application environment
a. Altitude to be not more than 1000m.
b. Ambient temperature: -30ºC - + 40ºC, the average value of 24H to be not more than 35ºC;
c. Relative humidity: the daily average value to be not more than 95%, monthly average value to be not more than 90%,
d. Speed of wind: not more than 35km/s
e. Contamination condition to be III grade, porcelain bushing creepage distance shall be 1050 mm (nominal creepage ratio to be not less than 25mm/kV);
f. The ambient air should be free of the flammable material, explosive danger, chemical corrosive and intensive shake.

 

Table 1

No. Item Unit Parameter
1 Rated voltage kV 40.5
2 Rated insulation level 1min power frequency withstand voltage kV 185/215(fracture)
Lightning impulse withstand voltage 95/118(fracture)
3 Rated current A 2000
4 Mechanical endurance time 5000
5 Rated pressure of SF6 gas(20ºC meter pressure) Mpa 0.45
6 Locking pressure (20ºC meter pressure) Mpa 0.40
7 Lowest ambient temperature ºC -30
8 Rated short-circuit breaking current kA 31.5
9 Rated short-circuit making current(peak) kA 80
10 Rated short time withstand current(thermal current) kA 31.5
11 Rated peak withstand current(dynamic current) kA 80
12 Rated out-of-phase breaking current kA 7.9
13 Breaking times of the rated short-circuit breaking current: time 16
14 Close time s ≤0.1
15 Open time s ≤0.06
16 Rated operation sequence   O-0.3s-CO-180s-CO
17 Rated breaking/opening current of single capacitor group A 400
18 Last time of short circuit current s 4
19 SF6 leakage rate (yearly)   ≤1
20 Moisture Content of SF6 gas(20ºC) Ppm(v/v) ≤150
21 Rated operating voltage of spring operation mechanism    
Voltage of closing and opening coil V AC 220, 380
DC:48, 110 , 220
Voltage of energy storage motor V AC 220
DC 220
22 Weight of SF6 gas kg 8
23 Weight of circuit breaker (including operation mechanism) kg 1400


Table 2

No. Item Unit Technical Requirements Test conditions and methods
1 Travel of movable contact mm 95±2 Measurement of movable contact travel refer to darawing12
2 Clearance between contacts mm 605±1.5 Measurement of Clearance between movable and fixed contact refer to drawing 12a
3 Three-phase switch-on asynchrony ms ≤3 Measurement of pole distance difference between movable and fixed contact refer to darawing14
4 Three-phase switch-off asynchrony ms ≤2 Measurement of pole distance difference between movable and fixed contact refer to drawing 15
5 Resistance of main loop μΩ ≤120 Measurement to DC voltage drop method, put in 100A
6 Speed at instant of contacts touching m/s 3.2±0.2 Rated voltage and measurement method refer to drawing 14
7 Speed at instant of contacts disconnecting m/s 3.4±0.2 Rated voltage and measurement method refer to the drawing 15
8 Cuisine stroke of making mm 10+0.5 -0.1 Refer to drawing 6 under the closing status
9 positioning gap of Cuisine stroke of making mm 1-2 Refer to drawing 6 under the closing status
10 Partial charging
40.5kV
25.7kV
PC 20 At rated gas pressure, use partial instrument to put 40.5kV between two outgoing wires for 1min, then drop to 25.7kV equably
PC 10

Contact Details
Ningbo Tianan (Group) Co.,Ltd.

Contact Person: admin

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