XHMR-10KVA Digital Insulation Resistance Tester | Cable Fault Locator
XHMR-10KVB is a portable high voltage digital insulation resistance tester (megohmmeter) that measures insulation resistance from 0.01MΩ up to 35TΩ at six selectable test voltages up to 10kV, together with DC/AC voltage, DC current and capacitance measurement. With absorption ratio (DAR) and polarization index (PI) testing, 500-group on-board storage and a USB interface, it delivers laboratory-grade insulation diagnosis in a 2.75kg field instrument.
Designed For: Electrical maintenance and commissioning teams that test the insulation of motors, generators, power transformers, switchgear and power cables — including utility substation crews, industrial plant electrical departments, equipment installation contractors and third-party electrical inspection service providers that need a portable 10kV insulation tester with on-board data storage and PC reporting.
Key Specifications
| Parameter |
Specification |
| Model |
XHMR-10KVB |
| Test Functions |
Insulation resistance, voltage, DC current, capacitance |
| Rated Voltage |
250V / 500V / 1000V / 2500V / 5000V / 10kV |
| Insulation Resistance Range |
0.01MΩ – 35TΩ (resolution 0.01MΩ) |
| DC Voltage Range |
0 – 1000V (resolution 0.1V) |
| AC Voltage Range |
0 – 750V (resolution 0.1V) |
| DC Current Range |
0.1nA – 6mA (resolution 0.1nA) |
| Capacitance Range |
10nF – 50μF (resolution 10nF) |
| Output Short-circuit Current |
≥6mA |
| Absorption Ratio / Polarization Index |
Supported (DAR / PI) |
| Data Storage |
500 groups |
| Display |
4-bit large LCD, gray screen backlight, 108 × 65 mm |
| USB Interface |
Data upload, save and print via PC software |
| Instrument Size |
240 × 188 × 85 mm (L/W/H) |
| Instrument Weight |
2750g (including battery) |
| Power Supply |
12V rechargeable battery |
| Automatic Shut-down |
15 minutes of inactivity |
| Dielectric Strength |
AC 3kV / 50Hz for 1 min |
| Working Temperature / Humidity |
-10°C to +50°C, <85%RH |
| Storage Temperature / Humidity |
-15°C to +55°C, <90%RH |
| Safety Standards |
IEC61010-1, IEC1010-2-31, IEC61557-1/5, IEC60529 (IP54), CAT III 300V |
Core Features
Protection functions for short circuits, overloads and low battery voltage.
Supports insulation testing, absorption ratio (DAR) measurement, polarization index (PI) calculation and rapid testing.
Displays residual voltage upon completion of every test for safer handling.
The instrument powers off automatically after a period of inactivity.
USB interface with built-in lithium battery charging function for on-site data transfer.
Available Voltage Ratings
| Model / Specification |
Rated Voltage |
Short-circuit Current |
| XHMR-25 |
250V / 500V / 1000V / 2500V |
3mA / 5mA |
| XHMR-50 |
500V / 1000V / 2500V / 5000V |
3mA / 5mA |
| XHMR-100 |
1000V / 2500V / 5000V / 10000V |
3mA / 5mA |
Field Applications
Motor, Generator and Transformer Insulation Testing
Applies up to 10kV DC to windings and records insulation resistance, DAR and PI values to judge moisture, contamination and aging before equipment is re-energized.
Power Cable and Switchgear Maintenance
Checks the insulation condition of power cables, bushings and switchgear during preventive maintenance, and confirms dielectric integrity after a repair or a fault.
Commissioning and Acceptance Testing
Provides stable, standard-referenced test voltages so installation contractors can issue insulation acceptance reports before hand-over.
On-site Data Recording and Reporting
Stores up to 500 measurement groups and uploads them to a PC over USB, so field engineers can build structured insulation test records without hand copying.
FAQ
Q1: Who is the XHMR-10KVA digital insulation resistance tester designed for?
It is built for electrical maintenance and commissioning teams that test the insulation of motors, generators, power transformers, switchgear and power cables — including utility substation crews, industrial plant electrical departments, equipment installation contractors and third-party electrical inspection service providers that need a portable 10kV insulation tester with on-board data storage.
Q2: What test voltages and resistance range does it support?
It provides six rated test voltages of 250V, 500V, 1000V, 2500V, 5000V and 10kV, and measures insulation resistance from 0.01MΩ up to 35TΩ with 0.01MΩ resolution.
Q3: Can it measure the polarization index and absorption ratio?
Yes. The unit supports both absorption ratio (DAR) and polarization index (PI) measurement, which are essential for judging insulation moisture and aging condition, not just a single resistance reading.
Q4: How is measurement data stored and transferred?
It stores up to 500 groups of measurements on board and connects to a PC through a USB interface with monitoring software, so records can be uploaded, saved and printed directly.
Q5: What safety standards and protection does it meet?
It is designed to IEC61010-1, IEC1010-2-31 and IEC61557-1/5, rated IEC60529 (IP54) with CAT III 300V and pollution grade 2, and passes a dielectric strength test of AC 3kV/50Hz for 1 minute with case insulation resistance of at least 50MΩ.
For more models, accessories or full specifications, please contact us.
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