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      Current Transformers & Rogowski-Coils for Auditors

      For installers: A summary of Current Transformer (CT's) and R-Coil specifications for all Wattwatchers Auditors

      The Current Transformers (CT's) and Rogowski Coils (R-Coils) required by Wattwatchers for Auditors are sold by us in sets of three in the following ratings:

      Download specification files

      Warning: Fitting billing or third-party CT's to an Auditor can cause inaccurate readings and damage the hardware. The Warranty of an Auditor is void if third-party CTs, or CTs of the incorrect specification, are fitted to an Auditor.

      60A CT's

      Use with: Auditor 6M & 6W

      Max Current: 60A

      Accuracy Class: 1.0

      Type: Split-Core

      Internal opening diameter: 10mm

      External dimensions: 25x40x23mm

      Cable: 1.8m (UL21885 24AWG*2C OD:3.6 grey jacket PVC wire)

      120A CT's

      Use with: Auditor 6M & 6W

      Max Current: 120A

      Accuracy Class: 0.5

      Type: Split-Core

      Internal opening diameter: 16mm

      External dimensions: 40x45x30mm

      Cable: 1.8m (UL21885 24AWG*2C OD:3.6 grey jacket PVC wire)

      200A CT's

      Use with: Auditor 6M & 6W

      Max Current: 200A

      Accuracy Class: 0.5

      Type: Split-Core

      Internal opening diameter: 24mm

      Cable: 1.8m (UL21885 24AWG*2C OD:3.6 grey jacket PVC wire)

      400A CT's

      Use with: Auditor 6M & 6W

      Max Current: 400A

      Accuracy Class: 0.5

      Type: Split-Core

      Internal opening diameter: 25mm

      Cable: 1.8m (UL21885 24AWG*2C OD:3.6 grey jacket PVC wire)

      600A CT's

      Use with: Auditor 6M & 6W

      Max Current: 600A

      Accuracy Class: 0.5

      Type: Split-Core

      Internal opening diameter: 36mm

      External dimensions: 48x80x60mm

      Cable: 1.8m (UL21885 24AWG*2C OD:3.6 grey jacket PVC wire)

      600A Billing CT's

      Use with: Auditor 6M+One and fit to CET PMC-340BB

      Max Current: 600A

      Accuracy Class: 0.5

      Type: Split-Core

      Internal opening diameter: 36mm

      External dimensions: 48x80x60mm

      Cable: 3.0m - UL21885 2 x 16AWG  - grey jacket PVC wire

      1500A Billing CT's

      Use with: Auditor 6M+One and fit to CET PMC-340BB

      Max Current: 1500A

      Accuracy Class: 0.5

      Type: Split-Core

      Internal opening diameter: 80mm

      External dimensions: 140mm external diameter

      Cable: 3.0m - UL1015 2 x 16AWG  - grey jacket PVC wire

      3,000A Rogowski Coils

      Use with: Auditor 3RM

      Max Current: 3,000A

      Accuracy Class: 0.5

      Type: Split-Core

      Internal opening diameter: 95mm

      External dimensions: 100mm external diameter

      Cable: 3.0m - black polyurethane UL94-V0

        2 x 22 AWG with shield

      Downloads

      📎 600V (Grey) CTs Specifications

      📎 300V (White) CT Specifications

      📎 CT sizing based on common cable sizes