The Magus MSJY-S5KV Insulation Resistance Tester is a high-voltage megohmmeter designed for substations, power engineering contractors, and HV test engineers. It measures insulation resistance up to 10TΩ with 500V, 1000V, 2500V and 5000Vtest voltages, and automatically calculates Polarization Index (PI)and Dielectric Absorption Ratio (DAR).

With a built-in 16.8V lithium-ion battery, digital filtering, and superior anti-interference performance, the MSJY-S5KV delivers accurate, reliable insulation testing in the field.

—

Why Choose the Magus MSJY-S5KV?

– **6 test voltage ranges** — 500V, 1000V, 2500V, 5000V, plus manual voltage regulation

– **Insulation resistance up to 10TΩ @ 5kV**

– **Adjustable short-circuit current** — up to 5mA (10mA customizable)

– **Auto PI and DAR calculation** — Polarization Index and Dielectric Absorption Ratio

– **Leakage current and capacitance measurement**

– **Superior anti-interference** — Accurate even with 2mA interference current

– **Dual power supply** — Lithium-ion battery, up to 4 hours runtime (10000V @ 100MΩ)

– **Insulation resistance simulation column** — Visual indication

– **Digital filtering** — Reduces external influence deviation

—

Key Applications

– Substation insulation testing

– Power cable insulation resistance measurement

– Transformer insulation testing

– Motor and generator insulation testing

– Switchgear and busbar insulation testing

– Capacitor discharge and capacitance measurement

– Preventive maintenance and commissioning

—

Technical Specifications

Safety Standard

– IEC 61010-1 CAT.IV 600V

– IEC 61326 EMC specification

– IEC 60529 IP64 (outer closed state)

Power

– AC Power: 110V-220V ±10%, 50/60Hz, 20VA

– Battery: 16.8V Lithium-ion rechargeable battery

– Battery Life: 10000V @ 100MΩ, 5 hours

General

– Size (L×W×H): 37cm × 27cm × 17cm

– Weight: 3kg

Measurement

– Test voltage accuracy: nominal value 100% to 110%

– Voltage measurement accuracy: 5% + 3V

– Current test range: 10mA

– Current measure precision: 5% + 0.2nA

– Short-circuit current: 2-5mA adjustable (10mA customizable)

– Capacitance test range: 20uF

– Capacitance testing accuracy: 15% + 0.03uF

– Capacitor discharge rate: 0.5s/μF from 5000V to 10V

Insulation Resistance Range and Accuracy (T: 23±5°C, RH: 45-75%)

Range	500V	1000V	2500V	5000V	Accuracy
Low	＜1MΩ	＜1MΩ	＜1MΩ	＜1MΩ	5%
Mid	1M–10GΩ	1M–20GΩ	1M–100GΩ	1M–100GΩ	20%
High	10G–100GΩ	20G–200GΩ	100G–1TΩ	100G–1TΩ	Unspecified
Max	＞100GΩ	＞200GΩ	＞1TΩ	＞1TΩ	Unspecified

Standard Accessories

1. High-pressure silica gel test line (red, green, black) — 1 set

2. AC power line — 1

3. Operating manual — 1

4. Certificate of soundness — 1

—

Frequently Asked Questions (FAQ)

**Q1: What is the maximum insulation resistance range?**

A: Up to 10TΩ at 5kV.

**Q2: What test voltages are available?**

A: 500V, 1000V, 2500V, 5000V, plus manual voltage regulation.

**Q3: Does it calculate PI and DAR automatically?**

A: Yes. It automatically records 15s, 60s and 600s values and calculates PI and DAR.

**Q4: How long does the battery last?**

A: Up to 4-5 hours (10000V @ 100MΩ).

**Q5: Can it measure capacitance?**

A: Yes. Capacitance test range is 20uF.

**Q6: What is the short-circuit current?**

A: 2-5mA adjustable (10mA customizable).

**Q7: Is it suitable for field use?**

A: Yes. IP64 rated, 3kg, with lithium battery and rugged carry case.

**Q8: What safety standards does it meet?**

A: IEC 61010-1 CAT.IV 600V, IEC 61326 EMC, IEC 60529 IP64.

/Products