Dcfln-24 Indoor AC High-Voltage Sf6 Load Break Switch

Dcfln-24 Indoor AC High-Voltage Sf6 Load Break Switch

Indoor AC high voltage vacuum circuit breaker hereinafter referred to as a circuit breaker is a three-phase AC rated voltage indoor switchgear, which can be used for the control and protection of electrical facilities in industrial and mining enterprises, power plants and substations, and is...

Description

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Indoor AC high voltage vacuum circuit breaker hereinafter referred to as a circuit breaker is a three-phase AC rated voltage indoor switchgear, which can be used for the control and protection of electrical facilities in industrial and mining enterprises, power plants and substations, and is suitable for places with frequent operations.


The circuit breaker meets the standard requirements of "AC high voltage circuit breaker", 855-1996 "3.6-40.5kV indoor AC high voltage vacuum circuit breaker", DL403-91, "10-35KV indoor AC high voltage circuit breaker ordering technical requirements", and meets The relevant requirements of IEC56 (Publication 87).


The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, which can be used as a fixed installation unit or a dedicated propulsion mechanism to form a handcart unit.


It is an indoor switchgear with three-phase AC 50Hz rated voltage of 12KV power system. It is used as protection and control unit for power equipment and industrial and mining enterprises. Applicable to places that require frequent operation at rated operating current, or multiple times to break short-circuit current.

The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, and can be used as a fixed installation unit, or can be equipped with a special propulsion mechanism to form a hand truck unit.


Features: small size, light weight, suitable for frequent operation

Main structure: vacuum interrupter, electromagnetic or spring operating mechanism, bracket and other components.


Conditions of use:

The ambient temperature is not higher than +40℃, not lower than -15℃ (storage and transportation allowed at -30℃);

The altitude does not exceed 1000m;

Relative temperature: the daily average value is not more than 95%, the monthly average value is not more than 90%, the daily average value of saturated vapor pressure is not more than 2.2×10Mpa, and the average value is not more than 1.8×10 MPa;

The earthquake heat does not exceed 8 degrees;

There is no place with fire, explosion hazard, serious pollution, chemical corrosion and severe vibration.


The main technical parameters:

NO

Item

Units

Technical parameters

1

Rated voltage

KV

12

2

Rated short-duration power frequency withstand voltage

42/48(Interphase, ground/fracture)

3

Rated lightning impulse withstand voltage

42/48(Interphase, ground/fracture)

4

Rated frequency

Hz

50

5

Rated current

A

630 1250

630 1250 1600

2000 2500 3150

630 1250 1600

2000 2500 3150

6

Rated short-circuit breaking current

KA

20/25

31.5

40

7

Rated short-time withstand voltage

20/25

31.5

40

8

Rated short circuit duration

S

4

9

Rated peak withstand current

KA

50/63

80

100

10

Rated short circuit closing current

50/63

80

100

11

Secondary circuit power frequency withstand voltage (1min)


2000

12

Rated single / back to back capacitor group breaking current

A

630/400(40kA:800/400)

13

Rated capacitor bank closing current


12.5 (frequency is not greater than)

14

Mechanical life

KA

20000

15

Rated current breaking times (electrical life)

20000

16

Rated short circuit current breaking times

times

50(40KA≤30)

17

Dynamic and static contacts allow wear cumulative thickness

mm

3

18

Energy storage time

s

≤10

19

Contact opening distance

mm

11±1

20

Overtravel

3.5±0.5

21

Contact closing bounce time

ms

≤2(40KA≤3)

22

Three-phase split/closed period

≤2

23

Average opening speed (contacts are separated by -8mm)

m/s

1.2±0.2

24

Main conductive loop resistance

0.6±0.2

25

Main conductive loop resistance

μΩ

≤50(630A)≤45(1250A)

≤40 (1600,2000A)≤35 (2500A or more)

26

Rated operation sequence


0-0.3s-Co-180s-Co


Fields of application:

The following is a list of SM6 range units used in medium/low voltage substations and industrial distribution substations:

Cable control and protection

Overhead control and protection

Transformers and distribution substations

Motor and transformer control and protection

Generator control and protection

Control and protection of capacitor bank


PRODUCT PHOTO



FACTORY

Vacuum Circuit Breaker For Indoor Type With Handcart

FAQ:

Q1: If I am interested in your products, when can I receive your quotation and detailed information after sending the inquiry?

A: All your queries will be answered within 24 hours.


Q2: Because I cannot confirm the quality of your products, can I get samples before ordering?

A: Of course! We also believe that sample ordering is the best way to build trust. In our company, we provide sample service! Please send inquiries to us and get samples!


Q3: Do you have a catalog? Can you send me a catalog to check all your products?

A: Yes, we have a product catalog. Please contact us online or send an email to send the catalog.


Q4: I need a price list of all your products. Do you have a price list?

A: We do not have a price list for all products. Because we have a lot of products, it is impossible to mark all prices on the list. Due to production costs, prices are always changing. If you want to check any prices of our products, please feel free to contact us. We will send you a quote as soon as possible!


This product is usually customized.

We are a manufacturer and have a professional technical department that can design and provide solutions according to customer needs.

Please contact our sales personnel to obtain design drawings

Here are our customer examples for your reference


IF NEED MORE DETAILES,PLEASE FEEL FREE YO CONTACT US


We have won the trust of the market and customers with our sincere and firm faith in dedication, making our Dcfln-24 Indoor AC High-Voltage Sf6 Load Break Switch sell well both at home and abroad. The most recent kinds are a great deal better than the preceding one particular and they are quite popular with lots of prospects. We can provide tailor-made integrated services to meet customer needs in all aspects.

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