KEW 3128 - High Voltage Insulation Tester
- Microprocessor controlled high voltage insulation resistance tester with Diagnostic functions.
- Suitable for analyzing the insulation characteristics of cables, transformers, motors, generators, high-pressure switches, insulators, wiring installations, etc.
- 6 ranges: 500V, 1000V, 2500V, 5000V, 10000V, 12000V Fine adjustment of voltage setting at each range is also possible
- Graphic representation of the insulation resistance and leakage current versus time on large display with bar graph and backlight.
- Can be operated from built-in rechargeable battery or from AC line.
- Automatic discharge after test with monitoring of the discharge voltage.
- Internal memory can store about 43,000 data (max).
- Robust design for field use with IP64 rating (with lid closed).
Insulation resistance (*): Accuracy is not guaranteed with setting of 250V or less
| Rated voltage | 500V | 1000V | 2500V | 5000V | 10000V | 12000V |
|---|---|---|---|---|---|---|
| Max measurement value | 500G? | 1T? | 2.5T? | 5T? | 35T? | |
| Accuracy | 400k?50G? ±5%rdg±3dgt (*) |
800k?100G? 5%rdg±3dgt | 2M?250G? ±5%rdg±3dgt | 4M?500G? ±5%rdg±3dgt | 8M?1T? ±5%rdg±3dgt | |
| 50G?500G? ±20%rdg (*) |
100G?1T? ±20%rdg |
250G?2.5T? ±20%rdg |
500G?5T? ±20%rdg |
1T?10T? ±20%rdg |
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| 10T - 35T? Values are displayed, but accuracy isn't guaranteed |
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| Short circuit current | Max 5.0mA | |||||
| Load resistor to output rated voltage | 0.5M? or more | 1M? or more | 2.5M? or more | 5M? or more | 20M? or more | 24M? or more |
Output voltage
| Rated voltage | 500V | 1000V | 2500V | 5000V | 10000V | 12000V |
|---|---|---|---|---|---|---|
| Monitor accuracy | ±10%±20V | ±10%±20V | ±10%±20V | ±10%±20V | ±10%±20V | ±10%±20V |
| Output accuracy | 0 - +20% | 0 - +10% | 0 - +10% | 0 - +10% | -5 - +5% | -5 - +5% |
| Selectable range | 50 - 600V (in steps of 5V) |
610 - 1200V (in steps of 10V) | 1225 - 3000V (in steps of 25V) | 3050 - 6000V (in steps of 50V) | 6100 - 10000V (in steps of 100V) |
10100 - 12000V (in steps of 100V) |
Voltage measurement
| Measuring range | DCV?±30 ? ±600V?ACV?30 ? 600V ?50/60Hz? |
|---|---|
| Accuracy | ±2%rdg±3dgt |
Current measurement
| Measuring range | 5.00nA - 2.40mA (Depending on the insulation resistance) |
|---|
Capacitance measurement
| Measuring range | 5.0nF ? 50.0?F (500V/1000V/2500V/5000V) |
5.0nF - 1.0µF (display range: 5.0nF - 50.0µF) (10000V/12000V) |
|---|---|---|
| Accuracy | ±5%rdg±5dgt | |
General
| Applicable standards | IEC 61010-1 CAT IV 600V Pollution degree 2, IEC 61010-031, IEC 61326, IEC 60529 (IP64): with the lid closed. |
|---|---|
| Operating temperature & humidity range | -10ºC - Relative humidity 85% or less 50ºC /(when operating with an external power supply, no condensation) 0ºC - 40ºC /Relative humidity 85% or less (when operating with battery, no condensation) |
| Storage temperature & humidity range | -20ºC - 60ºC / Relative humidity 75% or less (no condensation) |
| Power source | Rechargeable Lead storage battery (12V)* Charging time: approx. 8 hours / AC Power supply (100V - 240V, 50/60Hz) * Continuous measuring time: approx. 4 hours (a load of 100M? at the Insulation resistance 12000V Range.) approx. 2 hours (Max current consumption in range while rated currents are maintained.) |
| Dimensions | 330 (L) × 410 (W) × 180 (D) mm *Instrument and Hard case |
| Weight | 9kg approx. (including battery) *Instrument and Hard case |
| Included Accessories | 7170 (Main cord), 7224A (Earth cord), 7225A (Guard cord), 7226A (Line probe), 7227A (Line probe with alligator clip), 8029 (Extension prod), 8212-USB-W (USB adaptor with KEW Windows (Software)), Instruction manual |
| Optional Accessories | 7254 (Longer Line probe with alligator clip) |
