MPK103x

100 A high current micro-ohmmeter

  • Microprocessor controlled
  • Alphanumerical display
  • Resolution: 0.1 μΩ
  • Resistance reading: up to 20 mΩ
  • Up to 100 A test current
  • Kelvin-type (4-Wires) measurement
  • Internal memory for up to 200 readings
  • Direct reading (up to 4½ digits)
  • Overheating protection
  • USB interface
  • Built-in printer
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MPK103x

Description

The MPK103x high-current micro-ohmmeter is a portable, microprocessor-controlled instrument. Has optimized filters and protections for measurements in electrical substations. Can be used to accurately measure very low contact resistances of high voltage circuit-breakers and switches, busbars, etc., with test currents up to 100 A. It employs the 4 terminals-method (U/I measuring principle) to avoid errors caused by test leads and their contact resistances.

Measurement accuracy is guaranteed by a state-of-the-arts signal amplification system, offset-free and of high long-term stability. Resistances readings are shown in the alphanumeric display with up to 4½ digits-resolution. It allows to measure resistances up to 20 mΩ, and the best resolution is 0.1 μΩ.

Test current may be adjusted by the operator and his value is measured using an analog indicator (bargraph). It has an internal memory for up to 200 readings. The USB interface may be connected to a computer to download the stored values.

The high-current generation system is based on modern technology that allows to significantly decrease both its weight (approx. 24.25 lb | 11 kg) and size.

The cabinet is made of plastic material highly resistant to impacts and to environmental challenges. Internal thermal sensors in all sensitive components avoid any damage caused to the instrument due to overheating.

This is strong but lightweight equipment, and may be easily carried by one person. It is water-resistant and can be used under severe weather conditions (IP65 with closed lid) offering an excellent performance working both in the laboratory and out in the field.

Technical specifications

Test current

Up to 100 A (True DC).
The current may be continuously adjustable from 0 to 100%.

Resistance ranges

0-1999 μΩ.
0-19.99 mΩ.

Reading resolution

0.1 μΩ for R < 2000 μΩ.
1 μΩ for R < 20 mΩ.

Output voltage

4.5 VDC @ 100 A.
5.8 VDC (without load).

Maximum load resistance

30 mΩ @ 100 A.

Measurement principle

Four-terminal, U/I.

Thermal protection

Protects all sensitive components, avoiding any damage due to overheating.

Continuous operation time

At 100 A this equipment may be used continuously for approx. 15 minutes before the thermal protection activates.

Basic accuracy

± 0.5 % of reading ± 2 digits.

Advanced features

Digital direct reading of very low resistances in the alphanumerical display, with up to 4½ digits. Very fast and accurate measurements.

Built-in memory

It allows the storage of 200 tests readings.

Interface

USB.

Environmental protection

IP65 (with closed lid).

Safety class

Meets the requirements of IEC 61010-1.

Power supply

Mains: 220-240 V~.

Operating temperature range

23 °F to 122 °F (-5 °C to 50 °C).

Storage temperature range

-13 °F to 158 °F (-25 °C to 70 °C).

Humidity range

95 % RH (non condensing).

Equipment weight

Approx. 24.25 lb (11 kg).

Dimensions

19.76" x 15.51" x 7.48" (502 x 394 x 190 mm).

Included accessories

2 Combined current and potential leads - 19.6 ft (6 meters).
1 Power cord.
1 Ground cable.
1 USB cable.
1 Case for the accessories.
1 User guide.

Desktop software

Equipment's internal memory can be accessed by a desktop software that allows to download all memory data. It also can be used to make analysis of the test results and automatic report generation.

T-Logger (Windows 32 bits) T-Logger (Windows 64 bits)

Contact
Customer service
Phone: +1 305 938 0389
Fax: +1 786 401 7165
tentech@tentech.com

Sales
Phone: +1 305 938 0389
sales@tentech.com