Submeter
SEMS submeter
The SEMS submeter is an additional terminal connected to the main current supply which measures the overall current consumption of the system and provides the following parameters:
| Measured quantity | Unit | Total | Phase |
| Current: RMS and instantaneous I (t) | [A] | x | |
| Peak current | [A] | x | |
| Peak to peak current | [A] | x | |
| Voltage: RMS and instantaneous V(t) | [V] | x | |
| Peak voltage | [V] | x | |
| Peak to peak voltage | [V] | x | |
| Active power | [kW] | x | x |
| Reactive power | [kVAr] | x | x |
| Apparent power | [kVA] | x | x |
| Quarter-hourly power | [kW] | x | x |
| Power factor | cos ϕ | x | |
| Active Energy | [kWh] | x | |
| Reactive Energy | [kvarh] | x | |
| Frequency | [Hz] | x |
Technical Data SEMS submeter
- Polyamide housing, light gray, DIN-rail mounting
- Flammability class UL 94 V0
- Spring-terminal connection
- Communication: Radio 868 MHz ISM 500 mW, and / or RS485
- Energy measurement single and three-phase 3X240/400 VAC 50Hz
- Current measurement by connecting an external current transformer (CT) up to 1,500 A
- Sampling frequency possible (1 kHz)
- Storage of measured values (current, voltage, power, etc) to an internal memory card.
SEMS Submeter