ELR Installation at Traffic Control Building

Supply and Installation of 04 Nos of ELR ( Earth Leakage Relay ) in SMDB at First Floor in Traffic Control building to the outgoing breakers each were of 100 Ampere MCCB of Schnider Electric( Same as Merlin Gerin)

Material Bought from - Safety Electrical

Material

1. Shut Relay
2. ELR
3. Fuses
4. CBCT ( We bought it for 50mm2 cable because Lugs were connected so small can't enter in side the cable)

Fixed the shut inside the breaker assembly , put the CT's on the cable , installed ELR on rail mounted c-channel and made the wiring

How Basically It Works

ELR Earth Leakage Relays along with CBCT are used to detect
leakage  current in the earthing. If the earthing is not
proper a small amount of current will appear (in the order
of mA). ELR will continuously monitor the leakage current
if it exceeds the set threshold an output electromechanical
relay (which is inside the ELR) will operate. The output
relay contact can be connected to circuite breakers /
contactor to isolate power supply or alarms.

CBCT Core Balance Current Transformers these will come in
different sizes. the core material will be either nickel or
alloy of nickel, copper wire will be wounded on the core
and properly insulated. The 3-phase line along with neutral
are passed in this core and secondary is connected to ELR.
Idealy the leakage current should be zero if any earth
leakage happen the leakage current will appear at CBCT
secondary it will be detected by ELR

Air Conditioning Installation

Project No: 1- Abu Dhabi Municipality - 3rd Floor
( Through Highgate Interior Designing Company)

1. Supply and Installation of Fan coil Units - 04 Nos ( high noise)
2. Supply and Installation of Chilled water pipe line connection
3. Supply and installation of Thermostate.and its electrical wiring for the control

Problem Faced:

• high noise
• Drain water leakage.
• thermorstate proper setting
• No Chemical Flushing did.
• Because ceiling was 60 x 60 non perforated (like net holes ) so one reason of sound.
• diffuser used were 40 x 40 and length of ducting was less also so noise might be this reason
• sound proof liner should be used for make noise free.

SAMPLE - "LETTERS AND FORMS"

Receipt Voucher

Material Approval Form



Installation Testing Certification Report



Invoice

Incident Report

New Company to start in India

Required Formalities :-

1) Sale tax no.
2) Rented Office for sale tax no.
3) Pan card no.
4) ID card
5) Profile biodata , experience certificate
6) Affidavit
7) Bank account no.
8) Telephone.
9)deposit Rs 10000
10)Enter prise co. letter head

CCTV system Through Internet

IP BASED CCTV SYSTEM INSTALLATION

1.    Purchase a DSL modem as required (ADSL or SDSL).

2.    Connect one end of the Ethernet cable to the Ethernet port at the back of the DVR box and the other end to the modem.

3.    Set up your IP address. You can obtain it with your DSL connection.

4.    Activate your Firewall, so as to limit external interference in your recorded data on the Internet.

5.    Connect the router to the DVR with the help of a cable in case you require a network of connections.

6.    You now have an Internet connection through the DVR. Now you are able to view every movement from your  Bussiness Establishment online.

Things We Need:

• IP address
• DSL modem
• An Internet service
• Firewall security
• DVR
• Router
• Ethernet cable

Tips & Warnings

• Acquire a unique static IP address from the subscriber when you go for it. It will save on time and confusion in the Internet connectivity to your device.
• You can also connect to the Internet even if you have a standard dynamic IP.
• Always remember that your IP address is your password to the Internet service; enter it without any mistake.
• Ensure that the LAN cable is appropriately connected

List of Major Electrical Companies operating in UAE

1. Gulf Total Tractebel Power Company (GTTPC)
2. Arabian Power Company (APC)
3. Emirates Sembcorp Water and Power Company (ESWPC)
4. Al Mirfa Power Company (AMPC)
5. Abu Dhabi Distribution Company ADDC.

How to Do Testing For New Installations

 Before Supply is Connected

1. Continuity of Earth conductors {(MEC and CEC) - Main earth conductors and Circuit Earth conductors}. -- Test Procedure: 1
2. Continuity of Main & supplimentary bonding conductors- Test Procedure: 1
3. Continuity of Ring Circuit conductors. ----- Test Procedure: 2
4. Insulation Resistance                      -- Test Procedure: 3
5. Polarity Test                          - Combined with Test: 1
6. Earth Electrode Resistance     --- Test Procedure: 5

After Supply is Connected

1. External Earth fault Loop Impedence Test  ----- Test Procedure: 4
2. Re-confirm Polarity.                                 ------ Test Procedure: 4
3. Earth fault Loop Impedence                      ----- Test Procedure: 4
4. Operation of RCD and earth fault devices. ---- Test Procedure: 4
5. Operation of Switches and Isolators.           ---- Test Procedure: 4
6. Prospective Fault Current Measurement     ---- Test Procedure: 4

 
Instrument and Tools Used

1. Continuity Tester
2. Insulation Tester. ( Megger Meter)
3. Loop Impedence Tester.
4. Probes.
5. Rubber Gloves when applying 500V
6. Earthing terminal 4- pin lead.
7. Isolation Transformer 230/230 Volt for safety Reasons.