Main switchboard MSB
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Main switchboard MSB

 

Description

The main switchboard MSB is a basic element in the power supply system of any social or industrial facility. MSB is located in a room or enclosed part of the room where electric equipment is placed, access to which is available only to qualified service personnel.

MSB, as a rule, is an integrated structure, consisting of functional elements (panels), namely: input panel, sectional panel, distributing panel. Both switch-disconnectors and circuit-breakers are used as incoming and sectional units.



Certificates

MSB is manufactured according to TU 3430-005-61938140-2012, in accordance with GOST R



Functions

- Reception and distribution of electric energy of 50 Hz frequency and 380/220 V voltage;

- Protection against the current impact if accidentally touched;

- Prevention of fires in the ignition of wire insulation;

- Protection against overloads and short circuits.



Application area

- Social buildings (kindergartens, hospitals, apartment houses, etc.);

- Industrial facilities (mining and processing, refineries, etc.);

- Energy-intensive facilities (Industrial greenhouses, large shopping and leisure centers, etc).



Specifications*

 

Main Specifications

Rated current of input circuit

in accordance with the questionnaire or technical requirements

Rated current of section breaker in accordance

with the questionnaire or technical requirements

maximum short-circuit current

no more than 100 kA

Rated supply voltage

380V

Output voltage

380V

Number of switchable power supplies

2

Number of sections[1]

2

Number of input/output phases

3/3

Degree of protection in accordance with GOST 14254-963

IP20, IP31, IP54, IP55

Insulation resistance tested at 500V

More than 500 Kohm

Auxiliary NO/NC contact[2]

available

Frequency

50 ± 15%

Grounding system

TN-C, TN-C-S, TN-S

Type of input circuit conductors

in accordance with the questionnaire or technical requirements

Type of outgoing circuit conductors

in accordance with the questionnaire or technical requirements

Dimensions HxWxD

in accordance with the questionnaire or technical requirements

Materials consumption*

no more than 500 kg

Terms and Conditions of operation in accordance with GOST 15150

УХЛ 4

* The values are specified for a single section

* Product specifications and completing units can be changed in accordance with the technical requirements of the customer.

This information is introductory and can be changed without notice.

 

Selection of technical specifications for circuit breakers and main distribution buses installed in the main switchboard

Supply transformer power S, kVA

Rated current of input device, A

Rated current of sectional unit, A

Short-circuit current, real value, kA

Rated current of main distribution buses IP<31, А

The cross section of the main distribution copper buses, mm

oily

         

400

800

630

11.5

808.2903

1х40х10

630

1250

1000 (800)

18.2

1273.057

1х60х10

1000

2000

1600 (1250)

28.9

2020.726

1х100х10

1250

2500

2000 (1600)

36

2525.907

2х80х10

1600

3200

2500 (2000)

46.2

3233.161

2х100х10

2000

4000

3200 (2500)

57.7

4041.452

3х100х10

2500

5000

4000 (3200)

72.2

5051.815

4х100х10

dry

         

400

800

630

9.6

692.8203

1х40х10

630

1250

1000 (800)

15.2

1091.192

1х60х10

1000

2000

1600 (1250)

24

1732.051

1х100х10

         

(1х80х10)

1250

2500

2000 (1600)

30

2165.063

2х80х10

         

(2х60х10)

1600

3200

2500 (2000)

38.5

2771.281

2х100х10

         

(2х80х10)

2000

4000

3200 (2500)

48.1

3464.101

2х120х10

2500

5000

4000 (3200)

60.1

4330.127

3х120х10

 

type designation for MSB

ГРЩ-Х-ХХ-ХХХХ-У3.1IPХХ

ГРЩ

Main switchboard

Х

Panel designation:
- Input panel (IP)
- Sectional panel (SP)
- Linear Panel (LP)

ХХ

Number of typical circuit

ХХХХ

Panel rated current

У3.1

Climate version according to GOST 15150-69

IPХХ

Degree of protection in accordance with GOST 14254-96

 

 MSB for 2 sections with a section breaker

MSB for 2 sections with ATS

 



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