The document discusses the testing and commissioning process for a Main Distribution Board (MDB). It describes three key cases for testing the MDB: 1) Testing only the interconnecting cables between transformers and MDBs which involves physical inspection, Megger testing, and energizing the panel while recording readings. 2) Repeating the steps from case 1 for all cables coming to the panel. 3) Additional steps that must be taken like inspections and permitting when work is being done on cables connected to an upstream panel to minimize shutdowns.
Project Information:
Project Name: Company Name:
Location: Date :
Sl. No Description Yes No N/A Comments
DBs/ SDBs
1. Is earth conducted continued up to DB/ SDB?
2. Whether DBs & extension boards are protected from rain/ water?
3. Is there any overloading of DBs/ SDBs?
4. Are correct rated Circuit breakers provided in all main boards and sub-boards?
5. Is energized wiring in junction boxes, Circuit board panels & similar places covered all times?
CABLES
6. Whether the condition of cable is checked?
7. Are cables received checked for insulation resistance before using them?
8. Are all main cables taken either underground/ overhead?
9. Are main cables protected from sharp/ heavy materials?
10. Is any improper jointing of cable identified?
11. Are all plugs and sockets in good condition?
RCD (ELCB)
12. Is the connections routed through 30mA RCD?
13. EARTHING
14. Are main DB, Generator and other panel’s ear thing done?
15. Earth resistance checked and found within limits?
ELECTRICALLY OPERATED MACHINES/ ACCESSORIES
16. Whether the machine supply cable has industrial type socket and plug?
17. Are all metal parts of electrical equipment and light fittings/ accessories grounded?
18. Is there any shed/ cover for machines?
19. Are flood lights/ task lights fixed properly away from combustibles?
20. Others if any:
Remarks:
Inspected By: Signature:
Reviewed By HSE Manager / In charge : Signature:
Noted by Project Leader : Signature:
COMPEX TRAINING - OCS TRAINING INSTITUTE - COMPEX 01-04Muanisa Waras
This course covers the IEC Standard 60079 Parts 14 & 17 & ATEX 95 & 137 European Directives,
including the preparation, installation, inspection & maintenance of electrical/instrument
equipment used in explosive atmospheres.
CompEx 01-04 utilises both Practical and Theoretical assessments, covering all protection
concepts listed in order to validate a candidates core competency to work safely in explosive
atmospheres in a series of specific modules listed below:
• EX01 The preparation & installation of Ex ‘d’, ‘n’, ‘e’ and ‘p’ electrical equipment in explosive
atmospheres
• EX02 The inspection and maintenance of Ex ‘d’, ‘n’, ‘e’ and ‘p’ electrical equipment in explosive
atmospheres
• EX03 The preparation & installation of Ex 'i' equipment and systems in explosive atmospheres
• EX04 The inspection and maintenance of Ex 'i' equipment and systems in explosive
atmospheres
FOR MORE details, please email at muanisa@ocsgroup.com
In-Country Training
On
Operation, Maintenance, Protection & Control of 33/11 kV Substation
Project Name: Design, Supply, Installation, Testing & Commissioning of 33/11 kV sub-stations with source end feeder bays.
Contract No: BREB/UREDS/W-01A-001/02/2016-2017
BREB/UREDS/W-01A-002/03/2016-2017
BREB/UREDS/W-01A-004/04/2016-2017
Project Information:
Project Name: Company Name:
Location: Date :
Sl. No Description Yes No N/A Comments
DBs/ SDBs
1. Is earth conducted continued up to DB/ SDB?
2. Whether DBs & extension boards are protected from rain/ water?
3. Is there any overloading of DBs/ SDBs?
4. Are correct rated Circuit breakers provided in all main boards and sub-boards?
5. Is energized wiring in junction boxes, Circuit board panels & similar places covered all times?
CABLES
6. Whether the condition of cable is checked?
7. Are cables received checked for insulation resistance before using them?
8. Are all main cables taken either underground/ overhead?
9. Are main cables protected from sharp/ heavy materials?
10. Is any improper jointing of cable identified?
11. Are all plugs and sockets in good condition?
RCD (ELCB)
12. Is the connections routed through 30mA RCD?
13. EARTHING
14. Are main DB, Generator and other panel’s ear thing done?
15. Earth resistance checked and found within limits?
ELECTRICALLY OPERATED MACHINES/ ACCESSORIES
16. Whether the machine supply cable has industrial type socket and plug?
17. Are all metal parts of electrical equipment and light fittings/ accessories grounded?
18. Is there any shed/ cover for machines?
19. Are flood lights/ task lights fixed properly away from combustibles?
20. Others if any:
Remarks:
Inspected By: Signature:
Reviewed By HSE Manager / In charge : Signature:
Noted by Project Leader : Signature:
COMPEX TRAINING - OCS TRAINING INSTITUTE - COMPEX 01-04Muanisa Waras
This course covers the IEC Standard 60079 Parts 14 & 17 & ATEX 95 & 137 European Directives,
including the preparation, installation, inspection & maintenance of electrical/instrument
equipment used in explosive atmospheres.
CompEx 01-04 utilises both Practical and Theoretical assessments, covering all protection
concepts listed in order to validate a candidates core competency to work safely in explosive
atmospheres in a series of specific modules listed below:
• EX01 The preparation & installation of Ex ‘d’, ‘n’, ‘e’ and ‘p’ electrical equipment in explosive
atmospheres
• EX02 The inspection and maintenance of Ex ‘d’, ‘n’, ‘e’ and ‘p’ electrical equipment in explosive
atmospheres
• EX03 The preparation & installation of Ex 'i' equipment and systems in explosive atmospheres
• EX04 The inspection and maintenance of Ex 'i' equipment and systems in explosive
atmospheres
FOR MORE details, please email at muanisa@ocsgroup.com
In-Country Training
On
Operation, Maintenance, Protection & Control of 33/11 kV Substation
Project Name: Design, Supply, Installation, Testing & Commissioning of 33/11 kV sub-stations with source end feeder bays.
Contract No: BREB/UREDS/W-01A-001/02/2016-2017
BREB/UREDS/W-01A-002/03/2016-2017
BREB/UREDS/W-01A-004/04/2016-2017
ELEVATOR RESCUE AWARENESS OSHA & ASME COMPLIANTBruce Vincent
This Powerpoint training presentation reviews the different parts of an elevator. Covers the rescue procedures of trapped individuals at the awareness level. Meets OSHA, & ASME requirements for rescue at the awareness level. Presentation is over 60 slides in length.
Practical handbook-for-relay-protection-engineersSARAVANAN A
The ‘Hand Book’ covers the Code of Practice in Protection Circuitry including standard lead and device numbers, mode of connections at terminal strips, colour codes in multicore cables, Dos and Donts in execution. Also, principles of various protective relays and schemes including special protection schemes like differential,
restricted, directional and distance relays are explained with sketches. The norms of protection of generators, transformers, lines & Capacitor Banks are also given.
Isolation Procedures for Safe Working on Electrical Systems and Equipment by the JIB | solation Procedures for Safe Working on Electrical Systems and Equipment
This chart shows the safe isolation procedure that you should use when working on electrical systems and equipment.
You'll receive a printed copy of this from your Training Provider, but it's also here as a handy reference to keep electronically.
THE RULES OF SAFE ISOLATION ARE:
Obtain permission to start work (a Permit may be required in some situations)
Identify the source(s) of supply using an approved voltage indicator or test lamp
Prove that the approved voltage indicator or test lamp is functioning correctly
Isolate the supply(s)
Secure the isolation
Prove the system/equipment is DEAD using an approved voltage indicator or test lamp
Prove that the approved voltage indicator or test lamp is functioning correctly
Put up warning signs to tell other people that the electrical installation has been isolated
Once the system/equipment is proved DEAD, work can begin
Uploaded by THORNE & DERRICK LV HV Jointing, Earthing, Substation & Electrical Eqpt | Explosive Atmosphere Experts & ATEX IECEx.
ELEVATOR RESCUE AWARENESS OSHA & ASME COMPLIANTBruce Vincent
This Powerpoint training presentation reviews the different parts of an elevator. Covers the rescue procedures of trapped individuals at the awareness level. Meets OSHA, & ASME requirements for rescue at the awareness level. Presentation is over 60 slides in length.
Practical handbook-for-relay-protection-engineersSARAVANAN A
The ‘Hand Book’ covers the Code of Practice in Protection Circuitry including standard lead and device numbers, mode of connections at terminal strips, colour codes in multicore cables, Dos and Donts in execution. Also, principles of various protective relays and schemes including special protection schemes like differential,
restricted, directional and distance relays are explained with sketches. The norms of protection of generators, transformers, lines & Capacitor Banks are also given.
Isolation Procedures for Safe Working on Electrical Systems and Equipment by the JIB | solation Procedures for Safe Working on Electrical Systems and Equipment
This chart shows the safe isolation procedure that you should use when working on electrical systems and equipment.
You'll receive a printed copy of this from your Training Provider, but it's also here as a handy reference to keep electronically.
THE RULES OF SAFE ISOLATION ARE:
Obtain permission to start work (a Permit may be required in some situations)
Identify the source(s) of supply using an approved voltage indicator or test lamp
Prove that the approved voltage indicator or test lamp is functioning correctly
Isolate the supply(s)
Secure the isolation
Prove the system/equipment is DEAD using an approved voltage indicator or test lamp
Prove that the approved voltage indicator or test lamp is functioning correctly
Put up warning signs to tell other people that the electrical installation has been isolated
Once the system/equipment is proved DEAD, work can begin
Uploaded by THORNE & DERRICK LV HV Jointing, Earthing, Substation & Electrical Eqpt | Explosive Atmosphere Experts & ATEX IECEx.
Isolation procedures for safe working on electrical systems and equipment by ...
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About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
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Main distribution board (mdb) testing and commissioning field instrumentation - industrial automation, plc programming, scada & pid control system
1. 11/17/2019 Main Distribution Board (MDB) testing and commissioning - Field Instrumentation - Industrial Automation, PLC Programming, scad…
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Instrumentation Automation Electrical Interview Questions Blog Quiz
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Main Distribution Board (MDB) testing and commissioning
Electrical Power Flow Analysis
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sivaranjith May 4
MDB is panel under power distribution system which consists of a fuse, circuit breakers and ground leakage protection units.
Where electrical energy is taken from a transformer or an upstream panel to distribute electrical power to numerous individual
circuits or consumer points.
After installing the panel including proper terminations into each breaker, the same shall be offered up for an inspection from
consultants. Earth fault loop impedance test & earth leakage test for LV Distribution Board shall be done & recorded in the
prescribed format.
There are different cases in testing the MDB:
Case 1: Only interconnecting cable between transformers and MDB’s
Physically inspect cable length for any damage and peel off of outer sheath
Inspect and confirm all cable endings (Breaker / Busbar / Terminal Blocks cables) including phase sequence/rotation and
isolation sleeve.
Clean the panel before the tests, conduct the Megger test to check the insulation resistance. Minimum Insulation Resistance
is 20 MΩ. Rectify problem if reading obtained is below 20 MΩ.
After physical inspection and megger test are passed or rectified, Turn ON the panel respectively while at the “OFF” position
receiving the end incoming breaker.
Record the instrument reading.
Pad Lock receives the end Panel Incoming circuit breaker in the “OFF” position and returns the key to the administrator who
keeps the key inside the key box.
Clean the area of the panel from conducting materials. Arrange and lay approved rubber mat around “energized” panel.
Case 2:
Repeat the steps in Case 1 for all cables coming to the panel.
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2. 11/17/2019 Main Distribution Board (MDB) testing and commissioning - Field Instrumentation - Industrial Automation, PLC Programming, scad…
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Case 3:
In order to minimize unnecessary shutdown and or deprive others of the opportunity to access the “Upstream” panel, all work
including cable laying and terminations removed from the “Upstream” panel must be completed before applying for PTW.
Physically inspect each cable length from the “upstream” panel to each sub-system such as MDBs, SMDBs, Lift and
Escalator, AHUs etc. is properly terminated and free of cable skirmishes requiring repair work. Upon completion, proceed to
step (iii).
Apply for a work permit (PTW) describing in detail the type of work to be carried out, the “extent” of the required electrical
insulation, the place of work and the expected duration (time to complete work).
Confirm Administrator had an upstream and downstream circuit breaker Shutdown / Open Incoming and an appropriate
“Warning Sign” displayed against these two circuit breakers.
Keep the key/s given by Administrator and repeat steps (i) through (iii) as in Case 1 until work is completed. Turn “Off” all
feeder circuit breakers.
When satisfied with the work, withdraw the men and equipment from the site and return PTW.
Arrange a Final Inspection for “Complete” Panel/Switchboard.
Arrange Permit To Run (PTR) if you need to test run downstream sub-system like AHU, FCU, Pumps etc.
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