MOHAMMAD MAHDI Electronics Trading LLC
Discontinued
Kyoritsu KEW 3125A Digital High Voltage Insulation Tester (5 kV)
Brand:
Kyoritsu
SKU:
3971
The Kyoritsu KEW 3125A is a 5 kV digital high-voltage insulation tester measuring insulation resistance up to 1 TΩ across five test voltages (250, 500, 1000, 2500 and 5000 V). A large backlit display shows output and discharge voltage, and it supports PI and DAR diagnostics, a noise filter, AC/DC voltage measurement and an active voltage warning — ideal for testing motors, transformers and cables.
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Description
Overview
The Kyoritsu KEW 3125A is a digital high-voltage insulation tester that measures insulation resistance down to 1 TΩ across five selectable test voltages up to 5 kV — 250 V, 500 V, 1000 V, 2500 V and 5000 V. A large backlit display shows both the output voltage during testing and the discharge voltage afterwards, and a filter function reduces noise interference for stable readings. It performs polarization index (PI) and dielectric absorption ratio (DAR) diagnostics, measures AC and DC voltage between 30 and 600 V, and includes an active voltage warning and auto shut-off for safety and battery conservation.
Key Features
- Five test voltages up to 5 kV: 250 / 500 / 1000 / 2500 / 5000 V.
- Wide insulation measurement up to 1 TΩ.
- PI and DAR diagnostic testing.
- Output and discharge voltage shown; noise filter for stable readings.
- Active voltage warning, auto shut-off; CAT IV 300 V / CAT III 600 V.
Applications
- Insulation testing of motors, generators, transformers and cables.
- Preventive-maintenance diagnostics using PI and DAR.
- High-voltage commissioning and condition monitoring.
What’s in the Box
- Kyoritsu KEW 3125A high-voltage insulation tester
- Test leads with clips
- Hard carrying case
- Batteries
- Instruction manual
Why buy from MME in UAE
MOHAMMAD MAHDI Electronics Trading LLC (MME) is a trusted supplier of Kyoritsu test and measurement equipment in the UAE. We offer genuine products, competitive pricing, fast local delivery across Dubai, Abu Dhabi and the wider UAE, and knowledgeable after-sales support. 
Download the datasheet
specifications
specifications
| Voltage | 250V | 500V | 1000V | 2500V | 5000V |
|---|---|---|---|---|---|
| Accuracy | 0.0 – 100.0MΩ | 0.0 – 99.9MΩ 80 – 1000MΩ |
0.0 – 99.9MΩ 80 – 999MΩ 0.80 – 2.00GΩ |
0.0 – 99.9MΩ 80 – 999MΩ 0.80 – 9.99GΩ 8.0 – 100.0GΩ |
0.0 – 99.9MΩ 80 – 999MΩ 0.80 – 9.99GΩ 8.0 – 99.9GΩ 80 – 1000GΩ |
| ± Accuracy | ±5%rdg±3dgt ±20%rdg (100GΩ or more) |
||||
| Short circuit current | 1.5mA | ||||
| Output voltage accuracy | ±10% | -10 – +20% | 0 – +20% | Monitor: ±10%rdg±20V | |
| Voltage measurement | Measuring range: AC: 30 – 600V (50/60Hz), DC: ±30 – ±600V Accuracy: ±2%rdg±3dgt |
||||
| General Specifications | Applicable standards: IEC 61010-1, 61010-2-030 CAT IV 300V / CAT III 600V Pollution degree 2, IEC 61010-031, IEC 61326-1, 2-2 Power source: DC12V : LR14/R14 × 8pcs Dimension: 177 (L) × 226 (W) × 100 (D) mm 300 (L) × 315 (W) × 125 (D) mm (Hard case) Weight: 3125A: 1.9kg approx. (including batteries), 4kg approx. (including accessories) Accessories: 7165A (Line probe: 3m), 7264 (Earth cord: 3m), 7265 (Guard cord: 3m), 8019 (Hook type prod), 9180 (3025A Hard case), 9181 (3125A Hard case), LR14 (Alkaline battery size C) × 8, Instruction manual Optional Accessories: 7168A (Line probe with alligator clip: 3m), 7253 (Longer line probe with alligator clip: 15m), 8302 (Adaptor for recorder) |
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Reviews (2)
2 reviews for Kyoritsu KEW 3125A Digital High Voltage Insulation Tester (5 kV)
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Bench Multimeters
Gary –
Better than expected
mohammadjasem –
The Kyoritsu KEW 3125A is incredibly reliable and accurate for all my high voltage insulation testing needs!