Description
Kyoritsu 3124A 10kV High Voltage Insulation Tester
The Kyoritsu 3124A is a rugged high-voltage analogue insulation tester engineered for heavy-duty electrical maintenance, capable of performing precise insulation resistance tests across a wide voltage range. With a variable DC test voltage from 1 kV up to 10 kV, the instrument supports measurement ranges that cover both low- and very-high resistance values, enabling users to verify insulation integrity on cables, transformers, switchgear and other industrial equipment. Its autoranging dual scales (1.6 GΩ / 100 GΩ) and color-coded LED indicators help technicians quickly read results under diverse test conditions.
The 3124A displays both set and output voltages on a digital readout and includes an automatic discharge function that safely bleeds off stored charge after a test. Designed for field use, it operates on eight Ni-MH rechargeable AA cells and can also be charged from a vehicle 12 V source. Built-in alarms and visual battery indicators warn users of low battery and high voltage presence, while comprehensive safety warnings and interlocks guard against misuse.
Constructed with a robust housing and clear instrument layout, the KEW 3124A provides DC output for chart recorders and features terminals for earth and guard connections to improve measurement accuracy on high-capacitance samples. Its dependable battery life, straightforward charging procedure and auto-discharge capability make it a reliable choice for field engineers and maintenance teams who require repeatable, accurate insulation testing.
Features:
- Suited for heavy-duty electrical maintenance and industrial installations.
- Variable DC test voltage from 1 kV to 10 kV allowing up to 100 GΩ measurements.
- Easy-to-read autoranging dual scales with colour-coded LED indicators.
- Digital display shows set voltage and output voltage.
- Automatic discharge of charges stored in the circuit under test.
- DC voltage output for connection to recorders.
- Operated by Ni-MH rechargeable batteries and chargeable from AC or 12 V DC sources.
- Buzzer and battery alarm for safety and battery status indication.
Specifications:
| Specification | Detail |
|---|---|
| Test Voltage: | Variable DC 1 kV to 10 kV (10 V steps) |
| Measuring Range: | 0–1.6 GΩ / 1–100 GΩ (auto-ranging), 0–100 MΩ at 1 kV |
| Insulation Resistance Accuracy: | ±10% of reading (0.05–50 GΩ) |
| Other Range Accuracy: | ±1% of scale length |
| Output Voltage Accuracy: | ±2% of set value ±2 digits |
| Output Voltage Display: | 0–10 kV DC digital display |
| Recorder Output: | 100 mV DC / 1 kV (voltage), 100 mV DC / 10 µA (current) |
| Power Supply: | 8× Ni-MH AA rechargeable batteries or external DC 15 V |
| Battery Capacity: | 70–80 tests (5 minutes per test) |
| Current Consumption: | 80 mA standby, up to 300 mA operation |
| Dimensions: | 200 × 140 × 80 mm |
| Weight: | 1.6 kg |
| Operating Temperature: | 0 °C to 40 °C (max 85% RH) |
| Storage Temperature: | −20 °C to +60 °C (excluding batteries) |
| Instrument Insulation: | ≥1000 MΩ at 1000 V |
| Dielectric Withstand Voltage: | 5000 V AC for 1 minute |
Applications:
- Industrial electrical maintenance.
- Cable insulation testing.
- Transformer insulation verification.
- Generator and motor insulation assessment.
- Switchgear and control panel testing.
- Field service diagnostics for high-voltage equipment.
- Preventive maintenance in power utilities.
- Quality control during equipment installation.
Package Contents:
- 1x Lead for recorder
- 1x Lead for battery charging
- 1x Earth and guard leads
- 1x Battery charger
- 1x Hard carrying case
- 8x Ni-MH rechargeable batteries (HR15/51) installed
- 1x Instruction manual
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