10 kV insulation resistance meter with measurements up to 40 TΩ
Measuring the insulation of power transformers, generators and high-voltage cables at 10 kV and comparing results across years calls for a meter that reaches 40 TΩ, calculates PI, DAR, SV and DD and refers the reading to a reference temperature. The AMIC-10K1 measures from 10 MΩ to 40 TΩ at 10 kV per EN 61557-2, with ±(3% m.v. + 10 digits) up to 99.9 GΩ, runs the step-voltage test in five steps up to 10 kV, converts RISO to 20 °C or 40 °C per ANSI/NETA ATS-2009 and, in burnout mode, does not stop the test at breakdown so the fault can be located.
AMIC-10K1 key data
- Voltage, current and range: the AMIC-10K1 sets 50 V to 1 kV in 10 V steps and 1 to 10 kV in 25 V steps, with a test current of 1.2, 3 or 6 mA, and measures up to 200 GΩ at 50 V, 400 GΩ at 100 V, 1 TΩ at 250 V, 2 TΩ at 500 V, 4 TΩ at 1 kV, 10 TΩ at 2.5 kV, 20 TΩ at 5 kV and 40 TΩ at 10 kV.
- Accuracy: ±(3% m.v. + 10 digits) up to 99.9 GΩ, ±(3.5% m.v. + 10 digits) up to 999 GΩ, ±(7.5% m.v. + 10 digits) up to 9.99 TΩ and ±(12.5% m.v. + 10 digits) from 10 to 40 TΩ at 10 kV.
- Diagnostics: PI, DAR and Ab1/Ab2 with t1, t2 and t3 times; SV in five steps (2, 4, 6, 8 and 10 kV for a 10 kV final voltage); DD with 1 to 60 min charging, where a value above 7 means bad insulation and below 2 OK.
- Temperature correction: RISO converted to 20 °C or 40 °C for oil or solid insulation per ANSI/NETA ATS-2009, with the temperature entered manually or measured with the ST-1 probe (-40 to 99.9 °C, ±(3% m.v. + 8 digits)).
- Cables: length calculated as L = C/CX with the unit capacitance of the cable from 10 to 990 nF/km, time constant RISO·C and three-lead measurement with the G terminal (0.05% additional error).
- Leakage current, capacitance and continuity: leakage from 0.01 nA with ±(1.5% m.v. + 2 digits), capacitance from 1 nF to 49.99 µF with ±(5% m.v. + 5 digits) and, on units that include it, continuity from 0.12 to 999 Ω with 200 mA and ±(2% m.v. + 3 digits) up to 199.9 Ω.
- Environment: IP40 open and IP67 closed, CAT IV 600 V (CAT III 1000 V), -20 to +50 °C up to 3000 m, at least 1000 RISO measurements per charge, AC/DC voltmeter up to 1500 V and a 990-cell memory (10 000 records).
Advantages
Test voltage tailored to the object
Any value from 50 to 1000 V in 10 V steps and from 1000 V to 10 kV in 25 V steps, with test currents of 1.2, 3 or 6 mA and continuous indication of the measured resistance or leakage current.
Measurements up to 40 TΩ
The measuring range per EN 61557-2 reaches 10 MΩ to 40 TΩ at 10 kV, with a basic accuracy of ±(3 % of reading + 10 digits) and two- or three-wire measurement with test leads up to 20 m.
Complete insulation diagnostics
T1, T2 and T3 times for absorption coefficients from 1 to 600 s, polarization index (PI), dielectric absorption ratio (DAR), step-voltage tests (SV), dielectric discharge (DD) and damage location by burnout.
Ready for noisy environments
A digital filter stabilises readings in environments with strong interference, the object capacitance discharges automatically after each test and live objects are detected before the measurement starts.
Memory and connectivity
An innovative memory of 990 cells (10 000 records) describes measurement points, sites and clients, results transfer by USB or Bluetooth, and the backlit 5.6-inch LCD draws graphs during the measurement; an optional mini Bluetooth keyboard speeds up data entry.
Applications
- Insulation testing of power transformers, motors and generators.
- Single- and multi-core high-voltage cables.
- Capacitors, switchgear and other substation equipment.
- Continuity of protective connections and equipotential bonding per EN 61557-4.
- Maintenance measurements in environments with high electrical noise.
About the product
The AMIC-10K1 runs from the 90-260 V mains or from its battery packs with built-in fast charger, is rated CAT IV 600 V (CAT III 1000 V) with double insulation and reaches IP67 with the cover closed; it is supplied with 10 kV test leads, crocodile clips, pin probes, USB cable, carrying case, battery pack, software and a calibration certificate.
Technical specifications
| Insulation resistance | 10 MΩ to 40.0 TΩ per EN 61557-2 (UN = 10 kV) |
| Test voltage | 50-1000 V in 10 V steps; 1-10 kV in 25 V steps |
| Test current | 1.2 mA, 3 mA or 6 mA; max. short-circuit current 6 mA ±15% |
| Basic accuracy | ±(3 % m.v. + 10 digits); ±(12.5 %) at 40 TΩ |
| Diagnostics | PI, DAR, SV, DD; timer up to 99'59'' |
| Voltage measurement | DC and AC, 0 to 1500 V; 45-65 Hz |
| Capacitance measurement | 1 nF to 49.99 µF; ±(5 % m.v. + 5 digits) |
| Continuity | Protective connections per EN 61557-4, 200…250 mA; function available depending on serial number |
| Interface and display | USB and Bluetooth; backlit 5.6-inch LCD |
| Power supply | 90-260 V, 50/60 Hz mains or battery packs |
| Safety | CAT IV 600 V (CAT III 1000 V); IP40 (IP67 closed) |
| Dimensions and weight | 390 × 308 × 172 mm; approx. 6.1 kg with 13.2 V Li-Ion battery |
| Ranges per voltage | 200 GΩ (50 V), 1 TΩ (250 V), 4 TΩ (1 kV), 10 TΩ (2.5 kV), 20 TΩ (5 kV), 40 TΩ (10 kV) |
| Accuracy by sub-range | ±(3.5% m.v. + 10 digits) up to 999 GΩ; ±(7.5% m.v. + 10 digits) up to 9.99 TΩ; ±(12.5% m.v. + 10 digits) up to 40 TΩ |
| Leakage current and temperature | 0.01 nA…9.99 mA, ±(1.5% m.v. + 2 digits); ST-1 probe from -40 to 99.9 °C, ±(3% m.v. + 8 digits) |
Frequently asked questions
Can the AMIC-10K1 correct insulation resistance to 20 °C or 40 °C?
Yes. The AMIC-10K1 converts RISO to the ANSI/NETA ATS-2009 reference values: to 20 °C for oil or solid insulation (cables, for example) and to 40 °C for rotating machinery. The temperature is entered manually or measured with the optional ST-1 probe.
Can the AMIC-10K1 estimate the length of a cable?
Yes. With the unit capacitance of the cable (10 to 990 nF/km, from the cable manufacturer's datasheet) it calculates L = C/CX from the measured capacitance; for example, 68.1 nF on a 300 nF/km cable corresponds to 227 m.
What test voltages does it provide?
Any voltage between 50 V and 10 kV: in 10 V steps up to 1000 V and in 25 V steps from 1000 V to 10 kV.
What diagnostics does it offer besides resistance?
Polarization index (PI), dielectric absorption ratio (DAR), step-voltage tests (SV), dielectric discharge (DD), leakage current, capacitance and temperature with an optional probe.
Can it locate insulation damage?
Yes. The burnout function intensifies the damage point so the fault can be located, and the digital filter keeps readings stable in noisy environments.
How are results stored and transferred?
An internal memory with descriptions of points, sites and clients stores the results, which transfer to a PC by USB or Bluetooth.
How is it powered?
From the 90-260 V, 50/60 Hz mains or from battery packs with the built-in fast charger, so insulation tests can run independently of the mains.