What is the maximum CT rated amps supported by WattNode meters?
CCS sell current transformers (CTs) with rated currents ranging from 5 to 6000 amps. There are cases, such as Paralleling Current Transformers, that can result in even higher effective rated currents.
Most models of WattNode® meters can be configure for use with CTs rated to 6000 amps but there are some exceptions. WattNode Pulse meter outputs are scaled by the user’s counting device, so pulse meters have no maximum amps limit.
The tables below lists the maximum CT rated amps supported by different models of WattNode meters. The factory default setting for the CT rated amps is 5 amps and the unit of measure is 1 amp.
Production Models
| Model | Name (phases) | Max A |
|---|---|---|
| WNC-xx-xxx-BN | CtAmps (A, B, C) | 60,000 |
| WNC-xx-xxx-FT10 | nciCtAmps (sets all 3 phases) | 60,000 |
| WNC-xx-xxx-FT10-L | nciCtAmps (sets all 3 phases) | 60,000 |
| WNC-xx-xxx-FT10 Opt B | nciCtAmps_f (sets all 3 phases) | 60,000 |
| WND-M1-MB | CtAmps (CT1, CT2, CT3) | 6,000 |
| WND-WR-MB | CtAmps (CT1, CT2, CT3) | 6,000 |
Legacy Models
| Model | Name (phases) | Max A |
|---|---|---|
| WNA-xx-xxx-FT10 | nciCtAmps_f (sets all 3 phases) | 3276.7 |
| WNA-xx-xxx-TP87 | nciCtAmps_f (sets all 3 phases) | 3276.7 |
| WNB-xx-xxx-FT10 | nciCtAmps_f (sets all 3 phases) | 3276.7 |
| WNB-xx-xxx-FT10 Opt BI | nciCtAmps_f (sets all 3 phases) | 3276.7 |
| WNC-xx-xxx-MB | CtAmps (A, B, C or set all ) | 6,000 |
See Also