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ERFA-24 Electrical VCB Circuit Breaker 3 Poles With Common Insulated Cylinder

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Address: Modern enterprise Central (east zone)

Contact name:Linda Dong

ERFA Industries Group

ERFA-24 Electrical VCB Circuit Breaker 3 Poles With Common Insulated Cylinder

Country/Region	china
Categories	Battery Chargers

Product Details

Basic Info.

Model NO.:ERFA-24

Breaking Capacity:High Voltage Circuit Breakers

Operation:Electric Type

Speed:High-Speed Circuit Breaker

Arc-extinguishing Medium:Vacuum

Installation:Insert

Structure:MCCB

Poles Number:3

Type:Circuit Breaker

Function:Circuit-Breaker Failure Protection

Certification:VDE, ISO9001-2000, CE, CCC

Rated Current:630/1250/1600/2000/2500/3150A

Rated Voltage:24kv

Rated Frequency:50Hz

Insulated Cylinder:Embedded Poles

Mechanism Type:Mkl

Export Markets:Global

Product Description

ERFA-24 Series of Indoor High Voltage Vacuum Circuit Breaker
with Common Insulated Cylinder

General Description
ERFA-24 series of Indoor High Voltage Vacuum Circuit Breaker with Common Insulated
Cylinder is threephase A.C.50Hz indoor power distribution equipment with the rated
voltage of 24KV.It's used for protecting and controlling the electrical equipment in the
fileds of industry & minning enterprise,power plants and substation.This type Vacuum
Circuit Breaker conforms to national standards and the stipulation of IEC standard,the
capability reaches grade of M2-E2-C2.
The product adopt composite insulation way,spring charged operation and screw rod
push mechanism, with the characeristics of small volume,compact design and reliable
operation, it can easily match with the switchgear and meet the "Five Preventions"
demands.
This kind of Vacuum Circuit Breaker can be used for many kinds of switchgear like KYN28-24(GZS1),This series of products include:VCB truck,isolation truck and fuse truck etc.
Applying ambient conditions
1. Ambient temperature:-15ºC~+40ºC.
2. Ambient humidity:the average humidity of a day should be no more than 95%;the average humidity of a month should be no more than 90%.
3. Earthquake intensity:not exceed 8 degrees.
4. Saturated vapour pressure:the average pressure of a day should be no more than 2.2kPa;the average pressure of a month should be no more than 1.8kPa.
5. The height above sea level:1000m(besides the special requirements).
6. It should be installed in the places without fire,explosion,serious filth,chemical erosion and violent vibration.
Main Technical Specification

S.N	Name	Unit	Data
1	Rated voltage	kV	24
2	Rated current	A	630	1250	1600	2000	2500	3150
3	Rated frequency	Hz	50
4	Rated short circuit breaking current	kA	20		25		31.5
5	Rated short circuit making current	kA	50		63		80
6	Rated short time withstand current	kA	20		25		31.5
7	Rated peak withstand current	kA	50		63		80
8	Rated power frequency withstand voltage	kV	65
9	Rated lighting impulse withstand voltage	kV	125
10	Rated short-circuit duration	s	4
11	Rated operating sequence		O-0.3s-CO-180s-CO
12	DC component		50%
13	Mechanical endurance	Cycle	10000