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Multi-function Power Meter

The PM135 is a multifunctional three-phase power meter.
Featuring versatile I/O options, communication ports and protocols, it is ideal for integration in utility substations or industrial SCADA systems.
An LCD display, accompanied by a LED load-bar, enables easy on-site access to power parameters and viewing of load percentage at a glance.

Accuracy: Class 0.5/0.5S per ANSI / IEC 62053-22

  • Built-in: RS485
  • Optional ports: ETH; Wi-Fi; cellular; Profibus
  • Open protocol: Modbus RTU; DNP3.0
  • IEC 60870-5-101/104

Digital & Analog I/O

up to 16 I/O

Broad-range measurement

  • Voltage: 15-828V AC (direct, L-L)
  • Frequency: 25, 50, 60, 400 Hz

Multi-option Current Inputs

  • 5A or 1A
  • 40mA for HACS CTs (100-3,000A)
  • Special input: clip-on 5A HACS for retrofit

LED Bar-graph: Displays load as percentage of nominal current


  • Class 0.5/0.5S accuracy per ANSI C12.20 / IEC 62053-22
  • Class 0.2 per IEC 61557-12

Power Meter

  • Voltage, current (including neutral current), power, energy, power factor, frequency, voltage/current unbalance
  • Ampere/Volt demand meter
  • 25, 50, 60 and 400 Hz measurements
  • Sampling frequency: 128 samples per cycle

Variable Current Inputs

Available options:

  • 5A
  • 1A
  • HACS: special 40mA inputs for SATEC’s High Accuracy Current Sensors
  • RS5: Special 5A input for 5A clip-on HACS for retrofit installation on existing MV/HV CT secondary.

Harmonic Analyzer

  • Voltage and current THD, TDD and K-Factor,
  • Voltage and current harmonic spectrum and angles, up to the 40th order harmonic

Modular I/O

Available modules:

  • 4 Digital Inputs + 2 digital outputs (SSR or EM)
  • 12 Digital Inputs + 4 Digital Outputs (including additional com port of choice)
  • 8 Digital Inputs
  • 4 Analog Outputs (for Smart Transducer application)

Programmable Logical Controller

  • Embedded programmable controller
  • 16 control set points; programmable thresholds and delays
  • Relay output control (for alarm and protection)
  • 1-cycle response time

TOU Meter

Time-of-Use billing and logging:
4 totalization and tariff energy/demand registers x 8 tariffs, 4 seasons x 4 types of days, 8 tariff changes per day


  • 3×2” / 76x49mm backlit LCD display
  • Adjustable display brightness and update rate
  • Auto-scroll option with adjustable page; autoreturn to a default page
  • LED bar-graph displaying load as percentage of
    nominal load current (user-definable)

Real-time Clock

  • Built-in clock and calendar functions
  • 2 year battery backup

Communication Interfaces


  • Standard 2-wire RS-485

Add-on Com Modules (1 per device):

  • Multipurpose RS-232/422/485 port
  • ETH 10/100Base-T
  • 2G/3G/4G modem
  • Wi-Fi module

Communication Protocols

  • Modbus RTU/TCP
  • DNP 3.0/TCP
  • IEC 60870-5-101/104

Power Supply

Available options:

  • Auxiliary multi-purpose AC/DC power supply (85-265V AC, 88-290V DC)
  • Special versions (12, 24-48V DC)

Meter Security

Three-level Password security for protecting meter setups and accumulated data from unauthorized changes



  • 92×92mm square
  • 4” round cutout

Current Input Rating Options

  • 5A for CT secondary
  • 1A for CT secondary
  • 40mA input for HACS remote CTs
  • RS5: 5A split core HACS remote sensor (50/60Hz only)


PM135P: Power Version

  • Power meter and transducer offering advanced specifications (see Specs)
  • Metered parameters include: voltage, current, power and frequency


PM135E: Energy Only

  • Power meter and transducer offering advanced specifications (see Specs)
  • Metered parameters include: voltage, current, power and frequency
  • PLUS: Energy measurements and data logging (available in certain regions only)


PM135EH: Energy & Harmonic Version

All PM135E specifications and features, including energy metering and individual harmonics analysis up the 40th order harmonic.

Plug-In Modules

The PM13X modular approach enables users to assemble a system that meets their specific needs.

Dimensions (HxWxD):

  • Small form: 2.8×1.8×1.3″ / 72×46×34 mm
  • Large form: 3.7×3×1.7″ / 95×77×45 mm


Second Communication port - Small Form

One of the following:

  • Ethernet (TCP/IP)
  • RS232/422/485
  • 2G/3G/4G
  • Wi-Fi


Analog Outputs - Small Form

4 analog outputs

selection of range upon order:

  • ±1mA
  • 0-20mA
  • 0-1mA
  • 4-20mA
  • 0-5mA
  • ±5mA


6 Digital I/O - Small Form

  • 4 Digital Inputs (Dry Contact) / 2 Relay Outputs 250V / 5A AC
  • 4 Digital Inputs (Dry Contact) / 2 SSR Outputs 250V / 0.1A AC


8 Digital Inputs

8 Dry Contacts, internally wetted @ 24V DC


16 Digital I/O - Large Form

  • 12 Digital Inputs (Dry Contact or 250VDC)
  • 4 Relay Outputs 250V/5A AC
  • Optional selection of additional ETH, RS-485 or Profibus com port in module

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