top of page

MPK215R High-Current Micro-ohmmeter

The MPK215R is a portable, microprocessor-controlled high-current micro-ohmmeter, optimized for measurements in electrical substations and industrial environments. With test currents from 5 A to 200 A, it ensures highly accurate resistance measurements of high-voltage circuit breakers, switches, busbars, and similar applications.

Equipped with optimized filters, cooling systems, and advanced protections, the MPK215R is capable of performing up to 30 consecutive tests under normal ambient conditions without triggering thermal protection. It features high resolution down to 0.1 μΩ, digital storage, USB and Bluetooth communication, and Modbus protocol for remote control. Ruggedly built and IP65-rated, it is suitable for both field and laboratory use.

Function

• Accurate low-resistance measurement for breakers, switches, busbars, and substations
• High test current range: 5 A to 200 A true DC
• Four-terminal U/I principle eliminates lead/contact resistance errors
• Resolution up to 0.1 μΩ with ranges up to 1 Ω
• Cooling system for extended consecutive test capability
• Programmable test duration: 15 to 120 seconds at full current, unlimited at ≤100 A
• Auxiliary clamp input for current measurement (0.1 A to 60 A)
• Communication via USB, Bluetooth, and open Modbus protocol
• Built-in memory for up to 4000 readings with record organization
• Rugged IP65 housing for harsh environments

Technical Specifications

test current

  • 5 A to 200 A (true DC)

  • Adjustable in 0.2 A steps (5–20 A) and 1 A steps (20–200 A)

resistance ranges

  • 0.1 μΩ to 2 mΩ, resolution 0.1 μΩ

  • 2 mΩ to 200 mΩ, resolution 10 μΩ

  • 200 mΩ to 1 Ω, resolution 1 mΩ

measurement principle

  • Four-terminal U/I method

accuracy

  • ±1 % of reading (50 μΩ to 1 Ω)

programmable test time

  • 15 to 120 seconds (5–200 A)

  • Unlimited duration at ≤100 A

auxiliary clamp measurement

  • Range: 0.1 A DC to 60 A DC

  • Accuracy: 1 % + 3 digits

memory

  • Stores up to 4000 readings organized by records

display

  • Alphanumerical display, up to 4½ digits

communication

  • USB for configuration, control, and data download

  • Bluetooth for configuration and control

  • Modbus open protocol for integration with PLC, LabView, or Android app

protection

  • Overheating, overcurrent, short-circuit

environmental protection

  • IP65 (with closed lid)

safety compliance

  • IEC 61010-1

operating conditions

  • Temperature: -10 °C to +50 °C

  • Humidity: 95 % RH (non-condensing)

storage conditions

  • Temperature: -25 °C to +70 °C

power supply

  • 100–240 V AC mains

dimensions

  • 502 × 394 × 190 mm

weight

  • ~11 kg

Key Features

  • BSG mode (Both Side Grounded)

  • Up to 30 consecutive tests at 25 °C

  • High-resolution readings down to 0.1 μΩ

  • Open Modbus protocol for remote control and automation

  • Fast, accurate, and stable measurement performance

  • Rugged and portable with water and impact resistance

Standard Accessories

  • Auxiliary current clamp

  • Ground cable

  • Power cord

  • USB cable

  • Accessory case

  • User manual

  • T-Logger software (download)

  • Tentech Remote Control Android app (download)

Optional Accessories

  • 2 combined current and potential leads – 6 m

  • 2 combined current and potential leads – 8 m

  • 2 combined current and potential leads – 10 m

  • 2 combined current and potential leads – 12 m

  • 2 combined current and potential leads – 15 m

bottom of page