Introduction

Focal points

• Installation of the current transformer, P1 side toward the power supply.
• Attach the transformer with colson straps.
• Connect white wire/S1 of the transformer to the positive terminal of the energy meter.
• Connect black wire/S2 from the transformer to the negative terminal of the energy meter.
• Adjust for incorrect connection using energy meter settings.
• Check connection of the RJ12 cable on a three-phase transformer thoroughly, must click 2 times. See also the section RJ12 cable connection in Chapter 3 of this manual.
• Tighten the cables running through the transformer with cable spacers.

Types

Calculus offers the following Eastron meters:

• SDM120MOD Energymeter 45A - 1F - ModBus - MID
• SDM230MOD Energymeter 100A - 1F - ModBus - MID
• SDM630MCT - Modbus - MID - V2 - 3F/100A
• SDM630MCT - ML - 1L - MID - 3F - ModBus - 1xRJ12CT
• SDM630MCT - ML - 2L - MID - 3F - ModBus - 2xRJ12CT
• SDM630MCT - ML - 4L - MID - 3F - ModBus - 4xRJ12CT
• SDM630MCT - MODBUS - MID - 3F - CT
• SDM630MCT-RC - ModBus - Rogowski Coil - MID
• Eastron SDM72D-M-2-MID Energymeter - 3F - ModBus - MID

The type of energy meter is indicated above the energy meter display.

Information regarding the specifications such as, for example: 3x230/400V can be found below the display (see image above).