SATEC EM132 multifunction power meter – LV distribution specification

Measurement functions and recorded values

The SATEC EM132 multifunction power meter is used in LV switchboards where repeatable kWh, demand and load data are required for feeder monitoring, energy reporting and routine operational checks. It provides true RMS electrical measurement and logging for standard panel applications and is not intended as a power quality analyser.

The EM132 measures voltage, current, active power (kW), reactive power (kvar), apparent power (kVA), power factor, frequency, energy (import and export), demand and load values in three-phase LV systems.

SATEC EM132 Datasheet

Electrical inputs

Voltage inputs: direct measurement 0–690 V AC.
Frequency range: 25–400 Hz.

Current input options (application dependent):

• 63 A direct connection
• 1 A / 5 A CT secondary inputs
• 40 mA input for SATEC HACS CTs (100–3000 A)
• RS input for 5 A rated split-core HACS CTs

Accuracy and compliance

Active energy accuracy complies with IEC 62053-22 Class 0.5S. EMC and immunity compliance is in accordance with IEC 60688 and IEC 62052-11, including test coverage under IEC 61000-4-2, -3, -4, -5, -6 and -8. Safety compliance includes UL/IEC 61010-1 and UL 916.

Power supply options

Auxiliary supply (standard range): 57.7–277 V AC and 48–290 V DC.
Optional supply: 12–24 V DC (±20%).

Built-in communications (COM1)

The EM132 is supplied with an RS-485 communication interface as standard. Maximum baud rate is 115.2 kb/s, with cable length up to 1000 m, optically isolated.

Protocols on RS-485:

• Modbus RTU / ASCII
• DNP3.0
• IEC 60870-5-101 (option)

Plug-in communication modules

Plug-in modules extend the communication interface where required by the project specification. Ethernet (10/100Base-T, RJ45): supports Modbus/TCP (502), IEC 60870-5-104 and DNP3/TCP (20000), with up to four simultaneous connections (two Modbus/TCP and two DNP3/TCP). Cellular module: supports Modbus/TCP (502) and DNP3/TCP (20000). PROFIBUS-DP (IEC 61158): optically isolated RS-485 interface, 9.6 kb/s to 12 Mbit/s (auto-detection), 32 bytes input / 32 bytes output. RS-232 / RS-422/485 module: optically isolated, up to 115.2 kb/s.

Digital and analogue I/O

Built-in I/O
Two digital inputs and one Form A solid-state relay (SSR) output.

Optional plug-in I/O modules

4DIO module
Four digital inputs and two relay outputs (SSR or electromechanical relay). One-cycle update. Output modes include unlatched, latched, pulse and KYZ.

12DIO module
Twelve digital inputs and four relay outputs. Optional communication port: Ethernet or additional RS-485.

4AO module
Four analogue outputs with internal supply. Selectable output ranges: 0–20 mA, 4–20 mA, 0–1 mA, 0–3 mA, 0–5 mA, ±1 mA and ±5 mA. One-cycle update.

8DI module
Eight digital inputs with 1 ms scan time.

2AI module
Two analogue inputs, 4–20 mA. Availability dependent on the specified cellular module configuration.

Model variants

EM132 – standard model
DIN-rail multifunction power meter with direct connection up to 63 A or 1 A / 5 A CT inputs. Built-in RS-485 supporting Modbus RTU/ASCII and DNP3.0 (IEC 60870-5-101 optional). Compatible with plug-in communication and I/O expansion modules.

EM132-TP – additional built-in RS-485
Includes a second built-in RS-485 port. Available only with the auxiliary power supply model.

Typical applications (LV)

The SATEC EM132 multifunction power meter is specified for:

• LV distribution boards and switchboards
• MCC feeder metering
• Structured tenant and departmental sub-metering
• Retrofit panels using CT/HACS configurations
• SCADA and BMS integration where protocol selection is site-defined

It is selected where dependable three-phase energy measurement and structured system integration are required.