Issue
Sepam 20 does not show voltage values on the front display or via communications
Product Line
Sepam series 20
Environment
Measurements
Resolution
Sepam 20 relays measure voltage OR current.
Sepam 20 models that use current transformer (CT) or low power current transformer (LPCT) sensors measure current and not voltage. Models that measure current only are S20, S24, T20, T24, and M20 (please refer to table below)
Sepam 20 models that use voltage transformer (VT) sensors measure voltage and not current. Models that measure voltage only are B21 and B22 (please refer to table below)
* Table is an excerpt from "Order Form Sepam 20", available from the Schneider Electric website: https://www.se.com/ww/en/download/document/order_form_sepam_series_20/
Sepam 20 does not show voltage values on the front display or via communications
Product Line
Sepam series 20
Environment
Measurements
Resolution
Sepam 20 relays measure voltage OR current.
Sepam 20 models that use current transformer (CT) or low power current transformer (LPCT) sensors measure current and not voltage. Models that measure current only are S20, S24, T20, T24, and M20 (please refer to table below)
Sepam 20 models that use voltage transformer (VT) sensors measure voltage and not current. Models that measure voltage only are B21 and B22 (please refer to table below)
| Application | Type | Sensor |
| Substation | S20 | CT or LPCT |
| S24 | CT or LPCT | |
| Transformer | T20 | CT or LPCT |
| T24 | CT or LPCT | |
| Motor | M20 | CT or LPCT |
| Busbar | B21 | VT |
| B22 | VT |
Released for: Schneider Electric Ireland
