ZW8-12(G) Outdoor HV Vacuum Circuit Breaker Switch for AC 50Hz Three Phase Power

Classification:Vacuum circuit breaker

Inside Road & Administration Industry & Trading Garden,Houshan Industry Area,Fuzhou City,Fujian Province

0591-22806687 0591-22806697

0591-22806667

bs@china-grid.com.cn

Overview
Description:

ZW8-12(G)□ series outdoor high-voltage AC intelligent vacuum circuit breaker (hereinafter referred to as "intelligent circuit breaker"), suitable for three-phase power system of three-phase AC 50Hz, voltage 12kV, used for breaking and closing load current, It has overload and short-circuit protection, quick-break protection, fixed-time delay protection, automatic reclosing function, and can also be equipped with lightning arrester or isolating switch according to user needs.

Smart circuit breakers comply with GB 1984-2014 《High Voltage AC Circuit Breaker》, DL/T 402-2016 《High Voltage AC Circuit Breaker》, DL/T 403-2000 《12kV 40.5kV High Voltage Vacuum Circuit Breaker Ordering Technical Conditions》 and DL/T 721-2013 《Distribution Automation System Remote Terminal》 and other standards.

Use environment:

★ Altitude: no more than 1000m, if the altitude is higher than 1000m, the rated insulation level should be corrected accordingly;

★ Ambient temperature: upper limit +45℃, lower limit -40℃, maximum daily temperature difference 25K

★ Wind pressure: 700Pa;

★ Humidity: Daily average relative humidity ≤95%, monthly relative humidity average ≤90%;

★ Pollution level: e level;

★ Solar radiation intensity: ≥0.1Wcm2

★ Ice coating thickness: ≤10mm

★ Wind speed: 34m/s

★ Earthquake resistance: horizontal acceleration 0.3g, vertical acceleration 0.2g

Feature:

★ Adopt ceramic vacuum arc extinguishing chamber, strong arc extinguishing ability and short circuit breaking ability;

★ It has the advantages of explosion-proof, anti-condensation, anti-fouling and environmental protection;

★ Using air-silicon rubber and engineering plastic composite insulation to avoid the possibility of insulation accidents caused by oil quality deterioration in oil insulation;

★ The main body can be equipped with an isolating switch to form a "combined electrical appliance" with obvious breaks. On the isolating switch, users can choose to use a silicone rubber insulating sheath, which has the advantages of rain, snow, wind and sand resistance, and strong resistance to pollution and corrosion. Effectively improve the anti-freezing and anti-oxidation ability of the isolating switch;

★ It can realize three-stage protection, zero-sequence earth protection, reclosing and remote communication.

No. Item Unint Data
1 Rated frequency Hz 50
2 Rated voltage kV 12
3 Rated current A 630/1250
4 Rated short-time power frequency withstand voltage Interphase,to earth(wet) kV/min 42/1
Interphase,to earth(dry) 48/1
Break(dry) 34/1
Secondary circuit to earth 2/1
5 Rated lightning impulse withstand voltage Interphase,to earth kV 75
Break 85
6 Rated short-circuit breaking current kA 20/25
7 Rated short-circuit making current(peak) 50/63
8 Rated short-time withstand current and duration kA/s (20/25)/4
9 Rated peak withstand current kA 50/63
10 Rated short-circuit breaking current breaking times Times 30
11 Rated operating voltage and rated voltage of auxiliary circuit V AC/DC220、DC48、DC24
12 Main circuit resistance Without isolation μΩ ≤80
with isolation ≤120
13 Mechanical life Times 10000

Note:if altitude over than 1000m, the rated insulation level should be modify as appropriate

Contact Us
0591-22806687 0591-22806697
0086-13950298099
0591-22806667
Inside Road & Administration Industry & Trading
      Garden,Houshan Industry Area,Fuzhou City,Fujian Province
Sampras@china-grid.com.cn
Product Search

© CHINA-GRID POWER TECHNOLOGY CO.,LTD. All Rights Reserved. 闽ICP备16015067号-2