High Voltage Railway Vcb Outdoor 1-2 Phase

China High Voltage Railway Vcb Outdoor 1-2 Phase, Find details about China Vacuum Circuit Breaker, Railway Switchgear from High Voltage Railway Vcb Outdoor 1-2 Phase

Basic Info.

Model NO.

ZW7-27.5Kv

Poles Number

1-3

Type

Circuit Breaker

Function

Circuit-Breaker Failure Protection

Certification

ISO9001-2000

Model NO.

ZW7-27.5Kv

Poles Number

1-3

Type

Circuit Breaker

Function

Circuit-Breaker Failure Protection

Certification

ISO9001-2000

Product Desciption

High voltage Railway VCB ZW5-27.5Kv outdoor 1-3 phase

l ZW5-27.5 series high voltage out door circuit breaker can be used for 50HZ 40. 5kv outdoor high voltage electrical equipment.

l Attached spring operating structure and electromagnet operating structure can manipulate electric opening and closing in a distance, or accumulate energy for manual operation.

l The design performance strictly sticks to our national standard GB1984-89 for high voltage alternating current vacuum circuit breaker, and meet the requirements of International Electro technical Commission (IEC) IEC-56 for high voltage alternating current vacuum circuit breaker.

l Mainly used in controlling and protection of outdoor power transmission and transformation system of 35kv, also in normal operation and short-circuit protection for all kinds of power grid and frequent operation place.

l Highest system voltages Um related to the rated voltages are defined in IEC 60071-1.

l These series of VCBs are ceramic pillar type.

l Vacuum interrupter is installed in upper part of ceramic insulator.

l It has characteristics of well tightness and high temperature endurance, non-combustion and non-exploration, easy mounting, anti-aging and long service life.

Ambient condition

1. Altitude: up to 2500m

2. Ambient temperature: max +50°C min -35°C

3. Maximum daily average temperature °C 40

4. Wind pressure: ≤700Pa (equals to wind speed 37.5m/s)

5. Earthquake intensity: ≤8 degree (as per terms UBN-97: Zone 1)

6. Air contamination degree: degree

7. Max daily temperature variation: ≤25°C

8. Maximum solar radiation: ≤1035 W/m²

9. Isokeraunic level: ≤70

10. Average rainfall annually: ≤1400 mm/a

Mechanical Data

Main Technical Data
Rated voltage	kv	27.5
Rated frequency	Hz	50
Rated lighting impulse withstand voltage	kv	185
Rated short-time power frequency withstand voltage(dry)	kv	95
Rated short-time power frequency withstand voltage(humid)	kv	80
Rated current	A	1250	1600	2000
Rated short-circuit breaking current	kA	20	25	31.5
Rated short-circuit making current	kA	50	63	80
Rated short-time withstand current	kA	20	25	31.5
Rated peak withstand current	kA	50	63	80
Rated operations of short-circuit breaking current interruption	times	20
Full opening time	s	0.1
Rated operating sequence		0-0.3s-CO-180s -CO
Rated duration of short-circuit	s	4
Rated single capacitor bank breaking current	A	400
Contact erosion limit	mm	3
Mechanical life	times	20000
Weight	kg	1100