5 kV insulation resistance meter with measurements up to 15 TΩ
Diagnosing the insulation of transformers, motors, generators and medium-voltage cables up to 5 kV calls for a meter that reaches the teraohm range and, with the same connection, calculates PI, DAR, the step-voltage test (SV) and the dielectric discharge (DD). The AMIC-5005 applies 50 V to 5 kV in 10 and 25 V steps, measures from 50 kΩ to 15 TΩ per EN 61557-2 with ±(3% m.v. + 10 digits) up to 99.9 GΩ, sets the t1, t2 and t3 times between 1 and 600 s and stabilises the reading with 10, 30 or 60 s digital filters.
AMIC-5005 key data
- Test voltage and current: the AMIC-5005 sets the voltage from 50 to 1000 V in 10 V steps and from 1 to 5 kV in 25 V steps, with a selectable test current of 1.2 or 3 mA and a maximum short-circuit current of 3.6 mA ±15%.
- Range by voltage: up to 500 GΩ at 250 V, 1 TΩ at 500 V, 2 TΩ at 1000 V, 5 TΩ at 2500 V and 15 TΩ at 5000 V.
- Accuracy at 5 kV: ±(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 ±(10% m.v. + 10 digits) from 10 to 15 TΩ.
- Diagnostics: t1, t2 and t3 times from 1 to 600 s for Ab1/Ab2 or DAR/PI and a total time up to 99 min 59 s; SV in five steps (for example 1, 2, 3, 4 and 5 kV) of 30 s to 5 min; DD with 1 to 60 min charging at 100 V…5 kV.
- Leakage current and capacitance: leakage current from 0.01 nA with ±(1.5% m.v. + 2 digits) and capacitance from 1 nF to 49.99 µF with ±(5% m.v. + 5 digits), measured while the object is discharged.
- Interference: 10, 30 or 60 s digital filter; with an interference voltage below 50 V DC or 500 V AC the test continues with additional uncertainty, and the three-lead measurement with the G terminal adds only 0.05% error.
- Memory and environment: 990 cells in 10 banks of 99 (11880 results), USB or wireless transfer, at least 1000 RISO measurements per battery charge, operation from -20 to +50 °C up to 3000 m and CAT IV 600 V (CAT III 1000 V).
Advantages
Fine control of the test voltage
Any voltage from 50 to 1000 V in 10 V steps and from 1000 to 5000 V in 25 V steps, with test currents of 1.2 or 3 mA and continuous indication of resistance or leakage current.
Up to 15 TΩ with confidence
The measuring range per EN 61557-2 spans 50 kΩ to 15 TΩ, with a basic accuracy of ±(3 % of reading + 10 digits) and automatic discharge of the object capacitance after each test.
Full diagnostic indices
PI and DAR indices, step-voltage sequences (SV) up to 5 kV with steps of 30 s to 5 min, dielectric discharge calculation (DD) and capacitance and leakage-current measurement during the test.
Stable in noisy environments
Digital filters of 10, 30 or 60 s deliver stable results in environments with heavy noise contamination, and protection against live objects prevents connection errors.
Memory for entire campaigns
990 memory cells, in 10 banks of 99, store 11880 records, transferred to a PC through the USB cable or wirelessly with the optional USB-OR receiver; keyboard and display are backlit.
Applications
- Insulation testing of transformers, motors and generators.
- Single- and multi-core cables in substations.
- Capacitors, switchgear and other power station equipment.
- Periodic maintenance of medium-voltage installations.
About the product
The AMIC-5005 runs from the 90-265 V, 50/60 Hz mains or from its battery pack with built-in fast charger and low-battery warning, and is supplied with 5 kV test leads, crocodile clips, probes, USB cable, carrying case, harness, battery pack and calibration certificate, with 10 kV leads up to 10 m and a transport backpack as options.
Technical specifications
| Insulation resistance | 50 kΩ to 15.0 TΩ per EN 61557-2 |
| Test voltage | 50-1000 V in 10 V steps; 1-5 kV in 25 V steps |
| Test current | 1.2 mA or 3 mA |
| Basic accuracy | ±(3 % m.v. + 10 digits); ±(10 %) at 15 TΩ |
| Diagnostics | PI, DAR, SV, DD; timer up to 99'59'' |
| Step voltage (SV) | Sequences up to 5 kV; steps of 30 s to 5 min |
| Voltage measurement | DC and AC, 0 to 600 V; 45-65 Hz |
| Capacitance measurement | 1 nF to 49.99 µF; ±(5 % m.v. + 5 digits) |
| Memory and interface | 990 cells (11880 records); USB or wireless |
| Power supply | 90-265 V, 50/60 Hz mains or battery pack |
| Safety | CAT IV 600 V (III 1000 V); IP54 (IP67 closed) |
| Dimensions and weight | 390 × 310 × 170 mm; approx. 7 kg |
| Ranges per voltage | 500 GΩ (250 V), 1 TΩ (500 V), 2 TΩ (1 kV), 5 TΩ (2.5 kV), 15 TΩ (5 kV) |
| Accuracy by sub-range (5 kV) | ±(3.5% m.v. + 10 digits) up to 999 GΩ; ±(7.5% m.v. + 10 digits) up to 9.99 TΩ; ±(10% m.v. + 10 digits) up to 15 TΩ |
| Leakage current | 0.01 nA…9.99 mA; ±(1.5% m.v. + 2 digits) |
Frequently asked questions
How is the dielectric discharge (DD) calculated by the AMIC-5005 interpreted?
The AMIC-5005 charges the insulation for 1 to 60 min at 100 V to 5 kV, discharges it and measures the current after 1 minute; DD = I1min/(U·C). A DD above 7 indicates bad insulation, 4 to 7 poor, 2 to 4 questionable and below 2 OK.
How accurate is the AMIC-5005 when measuring close to 15 TΩ?
At 5 kV the accuracy is ±(3% m.v. + 10 digits) up to 99.9 GΩ and widens in the upper sub-ranges: ±(7.5% m.v. + 10 digits) from 1 to 9.99 TΩ and ±(10% m.v. + 10 digits) from 10 to 15 TΩ, values calculated for the top of each sub-range.
What resistance range does it cover?
From 50 kΩ to 15 TΩ per EN 61557-2, with the maximum range of 15 TΩ available at the 5 kV test voltage.
How finely can the test voltage be adjusted?
In 10 V steps between 50 and 1000 V and in 25 V steps between 1000 and 5000 V.
Does it support step-voltage testing?
Yes. SV sequences reach 5 kV — for example 1, 2, 3, 4 and 5 kV — with each step lasting from 30 seconds to 5 minutes and every result stored in memory.
How many results does the memory hold?
990 cells, arranged in 10 banks of 99, with a total of 11880 records, transferred by USB cable or wirelessly with the optional USB-OR receiver.
What power supply does it use?
The 90-265 V, 50/60 Hz mains or the built-in battery pack, with a fast charger and a low-battery warning.
