LVCM Version 2

• Site conducted

  Select

• Prepared by

• Address
  Address

• Meter Number

• Date and Time

  Date

• Is prestart scoping required? ie. Confirm site access, Check Phase Rotation

  Yes

  No

• Is installation 3 phase

  Yes

  No

Record Phase Rotation RWB (L to R / T to B)

• Recorded at Main Switch

• Clockwise

  Anti-Clockwise

• Recorded at MIL

• Clockwise

  Anti-Clockwise

• Take photo of Switches as found

  Media

• Take photo of Switches as found

  Media

• Proceed to next page

• What are you doing?

  Select Are you ONLY Isolating a Service? Are you ONLY installing a Service and NOT connecting to the Consumer Mains? Are you Replacing an Existing OH Service? Are you doing an Initial Connection

  • Are you ONLY Isolating a Service?
  • Are you ONLY installing a Service and NOT connecting to the Consumer Mains?
  • Are you Replacing an Existing OH Service?
  • Are you doing an Initial Connection

LVCM 13.A - ISOLATION OF AN INSTALLATION

Step 1: At the Main Switchboard

• Is Installation Three Phase?

• Recorded at Main Switch RWB (L to R / T to B)

  Clockwise

  Anti-Clockwise

• Recorded at MIL RWB (L to R / T to B)

  Clockwise

  Anti-Clockwise

Step 2: Advise

• Advise customer supply will be interrupted

Step 3: At customers Main Switchboard

• Record position of all Main Switches, CB’s and fuses

  Media

• Turn off all Main Switches and CB’s

  Media

Step 4: At LV Mains

• Remove all service fuses

Step 5: At the Main Switchboard

• Using a proximity device Confirm Supply is De-energised

  More Info

• Test Consumer Mains Actives

  No Indication

• Test Consumer Mains Neutral

  No Indication

Step 6: Disconnect/Isolate Installation from LV Network

• ie: Remove OH Service and Hardware / Discoonect UG Consumer Mains from LV Pillar and Secure

Completion / Sign Off

• Sign

  Sign

LVCM 13.B: Testing an OH Service / Dedicated UG Service Cable

Step 1: Install the Service and Secure

• DO NOT CONNECT TO NETWORK

Step 2: At the LV Mains

• Check System Normal

  More Info

• Single Phase

• Test between LV Mains Neutral and LV Mains Active

  ~230 V

• Test between Independent Earth and LV Mains Active

  ~230 V

• Test between Independent Earth and LV Mains Neutral

  =< 6 V

• Test between Independent Earth and LV Mains Active

  ~230 V

• Multi Phase

• Test between LV Mains Neutral and each LV Mains Active

  ~230 V

• Test between Phases A-B, B-C, C-A

  ~400V

Step 3: Connect Service to LV Mains

• In accordance with construction standards

Step 4: At LV Mains

• Visually Confirm all Service Actives are fused, and

• That the Service Neutral is connected directly to the LV Mains Neutral

Step 5: At the LV Mains

• Insert Fuses

Step 6: At Service Tails Customers End

• Prove Correct Connections

  More Info

• Single Phase

• Using a Voltmeter

• Test between the Service Neutral and the Service Active

  ~230 V

• Using a Proximity Device

• Test Service Active

  Indication

• Test Service Neutral

  No Indication

• Test Neutral Bond Tail

  No Indication

• Multiphase

• Using a Voltmeter

• Test between Service Neutral and each Service Active

  ~230 V

• Test between Phases A-B, B-C, C-A

  ~400V

• Using Proximity Device

• Test Neutral Bond Tail

  No Indication

Step 7: At the LV Mains

• Remove Service Fuses

Step 8: At Service Tails Customers End

• Confirm the Service Neutral is NOT fused or Energised and Actives are NOT Energised

• Using Proximity Device

• Test Service Active/s

  No Indication

• Test Service Neutral

  No Indication

• Test Neutral Bond Tail

  No Indication

Step 9: At Service Tails Customers End

• Secure Service Tails

Completion / Sign Off

• Sign

  Sign

Replace an Existing Overhead Service - LVCM 13.A, 13.C & 13.D

Step 1: At the Main Switchboard

• Is Installation Three Phase?

• Recorded at Main Switch RWB (L to R / T to B)

  Clockwise

  Anti-Clockwise

• Recorded at MIL RWB (L to R / T to B)

  Clockwise

  Anti-Clockwise

Step 2: Advise the Customer that Supply will be Interrupted

Step 3: At the Main Switchboard

• Record position of all AC Main Switches, CB’s and alternate sources of supply

  Media

• Turn off all AC switches, AC CB’s & Alternate Supplies

  Media

Step 4: At the LV Mains

• Remove all Service Fuses

  Completed

Step 5: At the Main Switchboard

• Confirm there is no supply

  Completed

• More Info

• Using a proximity device
  
  (a) Test all active conductors
  - No Indication
  
  (b) Test Main Neutral link
  - No Indication
  
  Using a voltmeter
  
  (c) Test between Main Neutral link and line terminal(s) of the main switch(es)
  ~0 V
  
  (d) Test between an independent earth and the line terminal(s) of the main switch(es)
  ~0 V
  
  (e) Test between an independent earth and the Main Neutral link
  ~0 V
  
  and
  
  For multiphase supply, in addition to steps (a), (b), (c), (d):
  
  (f) Test between each pair of line terminals at the main switch - A-B, B-C, C-A
  ~0 V
  
  NOTE: Refer to section 9.2 if indication received by proximity test

• MEN / Main Neutral as found

  Media

Step 6: At the Main Switchboard

• Remove the MEN Connection and the Main Neutral/s from the Main Neutral Link/s and Secure

  Completed

• More Info

• Place coloured cable ties in the removed conductors Neutral Link Terminals i.e. Black Main Neutral, Green MEN

• MEN / Main Neutral removed

  Media

Step 7: At the Main Switchboard

• Perform Continuity Test

  Completed

• More Info

• Using a Multimeter on Ohms setting, Perform Continuity Test to confirm ALL Main Switches are OPEN. Test between LINE side of Main Switch and Neutral Link/s
  
  If a reading other than (OL) is obtained re-check the installation:
  
  - for additional Main Switches
  - Main Switch/Switches that may have not operated correctly
  - incorrect Neutral was removed or identified
  - incorrect Switchboard wiring which may include un-switched circuits
  
  If all above factors have been considered, then a reading above 60,000 Ohms (60K) would be considered acceptable.

Step 8: For a Service

• Disconnect and remove existing service line

• Install the Service and Connect to the Consumer Mains

  Completed

• Ensure that any Neutral Bonding Conductor is DISCONNECTED from metallic parts and secured

  Completed

Step 9: At the Switchboard

• Confirm the switchboard is prepared for testing

  Completed

Step 10: At the LV Mains

• Check System Normal

  Completed

• More Info

• Single Phase

• Test between LV Mains Neutral and LV Mains Active

  ~230 V

• Test between Independent Earth and LV Mains Active

  ~230 V

• Test between Independent Earth and LV Mains Neutral

  =< 6 V

• Test between Independent Earth and LV Mains Active

  ~230 V

• Multi Phase

• Test between LV Mains Neutral and each LV Mains Active

  ~230 V

• Test between Phases A-B, B-C, C-A

  ~400V

Step 11: At the LV Mains

• Connect service / consumers mains to the LV Network<br>

  Completed

• More Info

• In accordance with construction standard
  
  Visually Confirm
  
  - All Actives are fused, and
  
  - The Neutral is Connected to the LV Mains Neutral

Step 12: At the Service or Point of Supply

• Confirm the Consumer Mains are NOT Energised

  Completed

• More Info

• Using a proximity device
  
  (a) Test service/consumer mains active(s)
  - No Indication
  
  (b) Test service/consumer mains neutral
  - No Indication

Step 13: At LV Mains

• Insert Service Fuse/s

  Completed

Step 14: At the Main Switchboard

• Prove Connections (Polarity)

  More Info

• Single Phase

• Using a Voltmeter

• Test between the Main Neutral and Line Terminal of the Main Switch

  ~230 V

• Test between Independent Earth and the Line Terminal of the Main Switch

  ~230 V

• Test between Independent Earth and the Main Neutral

  =< 6 V

• Test between Independent Earth and the Customer's MEN

  ~ 0 V

• Test between Independent Earth and the Line Terminal of the Main Switch

  ~230 V

• Multi Phase

• Using a Voltmeter

• Test between the Main Neutral and Line Terminal of the Main Switch

  ~230 V

• Test between Independent Earth and the Line Terminal of the Main Switch

  ~230 V

• Test between Independent Earth and the Main Neutral

  =< 6 V

• Test between Independent Earth and the Customer's MEN

  ~ 0 V

• Test between Independent Earth and the Line Terminal of the Main Switch

  ~230 V

• Test between Phases A-B, B-C, C-A

  ~400V

Step 15: At the Main Switchboard

• Perform Neutral Integrity Test (NIT) =< 1 Ohm

  =< 1 Ohm

  > 1 Ohm

• Record Value

• Confirm that:<br>1. There is no high resistance connections to the network.<br>2. Supervisor has been contacted. <br>3 The high reading is due to conductor size/lengths. <br>Appropriate process followed if leaving energises.

  Yes

  No

• Record Value

• ABANDON TEST, ISOLATE SUPPLY, DISCONNECT ALL SERVICE TAILS FROM LV NETWORK

  Send Email to Jim McNall

Step 16: At the Main Switchboard

• Reconnect the Main Neutral and then the MEN to the Main Neutral Link

  Completed

Step 17: At the Main Switchboard

• Perform MEN Integrity Test =< NIT

• More Info

• Test between an Earthed component and the Line Terminal of the Main Switch =< NIT
  
  Accepted MEN Integrity Test points: Earth Bar, Earthed Switchboard Enclosure, Earth Electrode. Or where the previous options are not available the Neutral Link where the MEN is connected.

Step 18: At the Main Switchboard

• If applicable, Check Phase Rotation is correct previously recorded in Step 1

  Clockwise

  Anti-Clockwise

Step 19: Point of Attachment

• Connect Neutral Bonding Conductor

  Completed

• More Info

• Test to ensure that the disconnected bonding conductor is not connected to the service active
  
  Using a proximity device:
  
  (a) Test each service active
  - Indication
  (b) Test service neutral
  - No Indication
  
  (c) Test bond tail
  - No Indication
  
  (d) Test service attachment point
  - No Indication
  
   Connect bond to service attachment point
  
  (e) Test bonded metalwork
  - No Indication
  
  (f) Test service active
  - Indication
  

• Bonding Completed by

  Sign

Step 20: At the Main Switchboard

• Return all Main Switches / Circuit Breakers to the position noted prior to work being carried out

  Completed

Step 21: At the Main Switchboard

• Conduct Final Test and visually confirm that the Main Neutral and MEN are connected to the Main Neutral Link

  Completed

• Using a Proximity Device Test Main Neutral Link and the MEN connection

  No Indication

• Take photo of Secured Switchboard

  Media

Completion / Sign Off

• Sign

  Sign

LVCM 13.C - INITIAL CONNECTION

Step 1: At the Main Switchboard

• Turn off all Main Switches, CB’s and Alternate Supplies

• Using a Proximity Device, Confirm there is NO Supply

  No Indication

• Switches on OFF Position

  Media

Step 2: At the Main Switchboard

• Remove the MEN Connection and the Main Neutral/s from the Main Neutral Link and Secure

  Media

Step 3: At the Main Switchboard

• Using a Multimeter on Ohms setting, Perform Continuity Test to confirm ALL Main Switches are OPEN. Test between LINE side of Main Switch and Neutral Link/s

  Infinity (OL)

• If a reading other than (OL) is obtained re-check the installation:
  
  - for additional Main Switches
  - Main Switch/Switches that may have not operated correctly
  - incorrect Neutral was removed or identified
  - incorrect Switchboard wiring which may include un-switched circuits
  
  If all above factors have been considered, then a reading above 60,000 Ohms (60K) would be considered acceptable.

Step 4: Bonding

• Is Bonding Required?

  Yes

  No

• Ensure that any Neutral Bonding conductor is disconnected from metallic parts and Secured

  Clockwise

  Anti-Clockwise

• Move to next Step

Step 5: CONFIRM THE SWITCHBOARD IS PREPARED FOR CONNECTION and TESTING AT THE SWITCHBOARD IS IMMINENT

Step 6: At the LV Mains

• Check System Normal

• Single Phase

  Yes

  No

• Test between LV Mains Neutral and LV Mains Active

  ~230 V

• Test between Independent Earth and LV Mains Active

  ~230 V

• Test between Independent Earth and LV Mains Neutral

  =< 6 V

• Test between Independent Earth and LV Mains Active

  ~230 V

• Three Phase

  Yes

  No

• Test between LV Mains Neutral and each LV Mains Active

  ~230 V

• Test between Phases A-B, B-C, C-A

  ~400V

Step 7: Connect Service / Consumer Mains to the LV Network

• In Accordance with Construction Standard - Visually Confirming - All Actives are fused, and - The Neutral is Connected Directly to the LV Mains Neutral

Step 8: At the Service, Point of Supply or Switchboard

• Confirm the Consumer Mains are NOT Energised

• Using a Proximity Device

• - Test Consumer Mains Active/s

  No Indication

• - Test Consumer Mains Neutral

  No Indication

Step 9: Confirm Switchboard is prepare for Testing

• At the LV Mains

• Insert Service Fuse/s

Step 10: At the Main Switchboard Prove Connections

• Single Phase

  Yes

  No

• Test between the Main Neutral and Line Terminal of the Main Switch

  ~230 V

• Test between Independent Earth and the Line Terminal of the Main Switch

  ~230 V

• Test between Independent Earth and the Main Neutral

  =< 6 V

• Test between Independent Earth and the Customer's MEN

  ~ 0 V

• Test between Independent Earth and the Line Terminal of the Main Switch

  ~230 V

• Multi Phase

  Yes

  No

• Test between the Main Neutral and Line Terminal of the Main Switch

  ~230 V

• Test between Independent Earth and the Line Terminal of the Main Switch

  ~230 V

• Test between Independent Earth and the Main Neutral

  =< 6 V

• Test between Independent Earth and the Customer's MEN

  ~ 0 V

• Test between Independent Earth and the Line Terminal of the Main Switch

  ~230 V

• Test between Phases A-B, B-C, C-A

  ~400V

Step 11: At the Main Switchboard

• Perform Neutral Integrity Test (NIT) =< 1 Ohm

  =< 1 Ohm

  > 1 Ohm

• Record Value

• Confirm that:<br>1. There is no high resistance connections to the network.<br>2. Supervisor has been contacted. <br>3 The high reading is due to conductor size/lengths. <br>Appropriate process followed if leaving energises.

  Yes

  No

• Move to Next Step

• ABANDON TEST

  Send Email to Jim McNall

Step 12: At the Main Switchboard

• Reconnect the Main Neutral and then the MEN to the Main Neutral Link

Step 13: At the Main Switchboard

• Perform MEN Integrity Test - Test between an Earthed component and the Line Terminal of the Main Switch =< NIT

• Accepted MEN Integrity Test points: Earth Bar, Earthed Switchboard Enclosure, Earth Electrode. Or where the previous options are not available the Neutral Link where the MEN is connected.

• =< NIT

  Yes

  No

• Take photo of Main Neutral Link with Main Neutral and MEN Connected

  Media

• Have you confirmed that:<br><br>1. The Main Neutral and MEN are connected to the Main Neutral Link and Secured correctly<br>2. The Test Point is effectively Earthed<br>3. You have a good connection between test instrument leads<br><br>If all factors have been considered, then a reading within 0.1 Ohms of the NIT would be considered acceptable.

  Yes

  No

• Take photo of Main Neutral Link

  Media

• Move to next Step

• ABANDON TEST

  Send Email to Jim McNall

Step 14: Neutral Bond

• Test to ensure that the disconnected bonding conductor is NOT connected to the Service Active

  More Info

• Using a Proximity Device

• Test Neutral Bond Tail

  No Indication

• Test Service Attachment Point

  No Indication

• Connect the Bond to the Service Attachment Point

• Test Bonded Metalwork

  No Indication

• Bonding Completed by

  Sign

Step 15: At the Main Switchboard

• As per Processes -
  
  Turn of Main Switch/es and CB's
  or
  Leave Main Switch/es and CB's turned OFF with Sticker over Main Switch/es

Step 16: At the Main Switchboard

• Conduct Final Test and visually confirm that the Main Neutral and MEN are connected to the Main Neutral Link

• Using Proximity Device

• Test Main Neutral Link and the MEN connection

  No Indication

• Take photo of Secured Switchboard

  Media

Completion / Sign Off

• Sign

  Sign