Kyoritsu Kew 3122B High Voltage Insulation Tester
The Kyoritsu KEW 3122B is a battery‑powered, analogue high‑voltage insulation resistance tester designed for field and shop use. Its robust, ergonomic housing and built‑in hard case protect the instrument and leads during transport, while the analogue pointer and colour‑coded scales provide immediate visual feedback on insulation condition.
Auto‑ranging between low and high resistance scales (0–5 GΩ / 2–200 GΩ) allows the tester to maintain full output voltage (5 kV ± 5%) down to 0.2 GΩ, ensuring accurate readings even on partially deteriorated insulation. Bright LEDs indicate which range is active, complementing the analogue display for rapid judgment in bright or low‑light environments.
Weighing approximately 1.7 kg (including eight C‑cell batteries) and rated to CAT III 600 V / CAT IV 300 V, the KEW 3122B delivers up to 40 hours of continuous use. Its safety‑compliant design (IEC 61010‑1, ‑2‑030; IEC 61010‑031) and optional recorder adaptor make it ideal for maintenance of cables, transformers, generators, and switchgear.
Features:
- Complies with IEC 61010‑1, ‑2‑030 (CAT III 600 V/CAT IV 300 V) and IEC 61010‑031 safety standards.
- Dual, automatic resistance scales (0–5 GΩ / 2–200 GΩ) with colour‑coded LEDs.
- Maintains rated output (5 kV ± 5%) down to 0.2 GΩ for accurate low‑level readings.
- Analogue pointer for intuitive trend monitoring.
- Audible high‑voltage warning buzzer.
- Includes water‑resistant hard carrying case.
- Optional MODEL 8324 recorder adaptor available.
Specifications:
| Parameter | KEW 3122B Specification |
|---|---|
| Test Voltage: | DC 5000 V ± 5% |
| Measuring Ranges: | 0 – 5 GΩ / 2 – 200 GΩ (auto‑ranging) |
| Accuracy (First Range): | ± 5% of indicated value (0.2 – 100 GΩ) |
| Accuracy (Outside First Range): | ± 10% of indicated value or 0.5% of scale length |
| Safety Category: | CAT III 600 V / CAT IV 300 V |
| Output Characteristics: | Maintains full 5 kV output down to 0.2 GΩ |
| Dimensions: | 177 × 226 × 100 mm |
| Weight: | ≈ 1.7 kg (including batteries) |
| Power Source: | 8 × LR14 (C‑cell) alkaline batteries |
| Operating Time: | Approx. 40 hours (100 MΩ load at 5000 V range) |
Applications:
- Industrial installations maintenance.
- Cable insulation testing.
- Transformer insulation testing.
- Generator insulation testing.
- Switchgear insulation testing.
Package Contents:
- 1x Line probe (MODEL 7165A)
- 1x Earth cord (MODEL 7264)
- 1x Guard cord (MODEL 7265)
- 8x LR14 (C‑cell) alkaline batteries
- 1x Instruction manual
- 1x Hard case (MODEL 9179)
- 1x Pickel‑type probe tip (MODEL 8019)
- 1x Straight‑type probe tip (MODEL 8254)
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