Current Transformer Strip
Up to 125 A, 9.5 mm wire diameter
A strip of three solid core current transformers for use with WB-MAP series of energy meters. Spaced 1 DIN module apart.
Solid core transformers have a wide operating range — accuracy class 0.5S is maintained for a rated current of 15 A and a maximum of 125 A. They can therefore be used both for direct current measurement and downstream of measuring transformers with a 15 A secondary.
Technical specifications
- Measured current from 0.15 to 125 A.
- Rated primary current 15 A.
- Accuracy class 0.5S.
- Transformation ratio 1:2000.
- Wire outer diameter up to 9.5 mm.
- Core type — solid.
- Core material — ferrite.
- Three transformers on one strip, spaced 1 DIN module apart.
- Detachable screw terminal block.
- DIN rail mounting bracket.
- Dimensions 70 x 28 x 30 mm excluding mounts.
- Weight 75 g.
Selecting a transformer by current
For more accurate measurements, all else being equal, choose a current transformer with a larger hole diameter. A larger core size improves the transformer's measuring performance and reduces the error.
| Transformer model | Measured current, A | Accuracy class | Hole diameter, mm | Core type |
|---|---|---|---|---|
| ZMCT102w | 0.15…45 | 0.2S | 5 | Solid |
| KCT-6 | 0.2…27 | 0.5S | 5.5 | Split |
| ZMCT205D | 0.06…15 | 0.5S | 6.5 | Solid |
| ZMCT134 | 0.15…65 | 0.5S | 7.5 | Solid |
| WB-CT309 (ZMCT123) | 0.15…125 | 0.5S | 9.5 | Solid |
| ZEMCTK05-14 | 0.15…90 | 0.5S | 10 | Split |
| ZMDCT21 | 0.8…140 | 0.2S | 12 | Solid |
| ZEMCTK04-13 | 0.25…152 | 0.5S | 16 | Split |
| CTSA024 | 0.35…290 | 0.5S | 24 | Split |
| CTSA035 | 5…755 | 0.5S | 35 | Split |