Inspection Checklist for SMDBs & MDBs

7/24/2019 Inspection Checklist for SMDBs & MDBs

1/5

Inspection Checklist SMDBs & MDBs

Sr.No.

Description Yes

No

N.A

Comments

Statutory Inspection and Test for o! "olta#e $."% Installation."isual Inspection

'orkin# Space & (acilitiesa. Adequacy working space and safe access

provided for switch room and /or electrical

facilities.

b. Entrance /exit to switch room and/or

electrical facilities are free of obstruction.c. Suitable locking facilities provided for

switch room and /or electrical facilities.d. Suitable lighting provision provided for

switch room and /or electrical facilities.e. Suitable ventilation provision provided for

switch room and /or electrical facilities.f. Suitable tools for withdrawal of fuses at

fuse board provided.g. A warning notice A!"E# $ E%E&'#(&(')*

+!A+',-#(SE E!'#) #-,(('E0 and

provided at every entrance of switch room.h. 1ire barriers and other measures for

protection against thermal e2ects areproperly installed.

i. anger notices* warning notices* schematic

diagrams* instructions and similar

information are correctly and adequately

provided.3. 4arning notices for substations and switch

roomsk. 4arning notices for earthing and main

bondingl. All switchgears* distribution boards and

electrical equipment properly labeled.m. (nspect cabinets for signs of rust* corrosion*

or deteriorating paint.) S!itch*oards+ Main S!itch and Circuit Breaker

a. An up5to5date notice of periodic inspection

and testing provided at point of supply 6i.e.

a switchboard* a circuit breaker or a


2/5


Sr.

No.

Description Ye

s

N

o

N.

A

Comments

distribution board7 of the installation.b. 8isually check the Switch oard* cover*

cabinet* conduits* raceways* and

conductors for proper grounding and

bonding.c. &ircuits* fuses* switches* terminals* etc. are

provided with a legible and durable

identi9cation label.d. (nspect the Switch board for overall general

condition and for physical damage. &heck

for broken studs and loose or damaged

wires* connectors* terminations* etc.!o visible damage to impair safety.

e. 4ork done properly recorded in logbook

f. An up5to5date schematic diagram displayed

g. All accessible live parts screened with

insulating plate or earthed metal.h. All exposed conductive parts e2ectively

earthedi. Earthing system e2ectively connected

3. Earth wire has been installed for hinged

doorsk. 'he A& ratings are in accordance with the

approved working drawings.

l. 4arning notice displayed at main bonding

connections.m. All protective devices are functioned

properly and correctly set.n. Suitable interlock scheme provided to

prevent parallel operation of two or more

sources of supply and :5pole incoming and

interconnecting circuit breakers provided

for supply to be taken from more than one

source and is interconnected.o. 'he breaking capacity of all circuit breakers

/interconnection devices is able to

withstand the prospective fault current.


3/5


Sr.

No.

Description Ye

s

N

o

N.

A

Comments

p. rotective relays have been correctly setand over current protective devices suitably

set for all circuits.q. rotective type current transformers are

used for protective relays.r. A means of isolation provided for every

circuit.

s. -peration of circuit breakers and mainswitches checked.

t. (ndication checked.

u. !o undersi;ed conductor used between themain bus bar and fuse/


4/5


Sr.

No.

Description Ye

s

N

o

N.

A

Comments

b. A notice of periodic testing provided at ornear the main distribution boardincorporating a residual current device.

c. All accessible live parts screened with

insulating plate or earthed metal.d. Earthing system e2ectively connected

e. Earth wire has been installed for hinged

doorsf. istribution boards securely mounted on

suitable supports.

g. A suitable switch provided to control eachdistribution board.

h. hase barriers for =5phase distributionboard provided.

i. (nspect the istribution board for overall

general condition and for physical damage.

&heck for broken studs and loose or

damaged wires* connectors* terminations*

etc.

!o visible damage to impair safety.

3. 'he breaking capacity of


5/5


Documents

Inspection Checklist for SMDBs & MDBs