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