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ITEMLIST
Products Infomation

The All-Rounder.Hipot,Insulation Resistance,Ground Bond,Leakage or Partial Dischage,this analyzer covers it all!
The TOS9300 series is a high performance electrical safety analyzer that complies to a wide range of universal standards.
A total of 6 models are available for standard compliance tests in a wide variety of applications including R&D,quality assurance manufacturing lines and laboratory tests.
5 Key Features
1. All-in-One Testing – TOS9303LC model covers AC/DC Hipot, IR, Ground Bond, and Leakage Current in one instrument.
2. High Capacity – AC 5 kV / 100 mA, DC 7.2 kV / 100 W output.
3. 40A AC/DC Ground Bond – New amplifier design supports high-current testing for automotive and EV systems.
4. Full Connectivity – LAN / USB / RS232C standard on all models.
5. User-Friendly Operation – 7-inch LCD with real-time measurement display and stored standard outlines.
Performance Highlights
・ Insulation Resistance: 0.001 MΩ to 100.0 GΩ
・ Ground Bond: 0.001 Ω to 0.600 Ω (3.0 A to 42.0 A)
・ Leakage Current: 1 μA to 100 mA (rms) – TOS9303LC
・ Partial Discharge Detection – TOS9301PD
・ Rise/Fall Time Control for reduced DUT stress
Applications
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Electrical & Electronic Equipment – Standard safety compliance tests.
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Medical Devices – Leakage current (patient current) testing.
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Automotive Components – EV/PHV systems, charging connectors.
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PV Modules – Withstanding voltage & insulation resistance testing.
Model Comparison
Model | AC Hipot | DC Hipot | IR | GB | LC | PD |
TOS9300 | ✔ | – | ✔ | – | – | – |
TOS9301 | ✔ | ✔ | ✔ | – | – | – |
TOS9301PD | ✔ | ✔ | ✔ | – | – | ✔ |
TOS9302 | ✔ | – | – | ✔ | – | – |
TOS9303 | ✔ | ✔ | ✔ | ✔ | – | – |
TOS9303LC | ✔ | ✔ | ✔ | ✔ | ✔ | – |
Video
TOS9300 Series – Specifications Overview
Model | AC Hipot Test | DC Hipot Test | Insulation Resistance Test | Ground Bond Test | Leakage Current Test | Partial Discharge Test | Key Features |
TOS9300 | 5 kV / 100 mA (500 VA) | – | 0.001 MΩ to 100.0 GΩ (DC -25 V to -1000 V) | – | – | – | Basic model. AC Hipot + Insulation Resistance measurement |
TOS9301 | 5 kV / 100 mA (500 VA) | 5 kV / 20 mA, 7.2 kV / 13.9 mA (100 W) | 0.001 MΩ to 100.0 GΩ (DC -25 V to -1000 V / DC +50 V to +7200 V) | – | – | – | AC/DC Hipot and high-voltage Insulation Resistance measurement |
TOS9301PD | 5 kV / 100 mA (500 VA) | 5 kV / 20 mA, 7.2 kV / 13.9 mA (100 W) | 0.001 MΩ to 100.0 GΩ (DC -25 V to -1000 V / DC +50 V to +7200 V) | – | – | Partial discharge measurement (0.1 pC resolution) | AC/DC Hipot + Insulation Resistance + Partial Discharge test in one unit |
TOS9302 | 5 kV / 100 mA (500 VA) | – | – | 0.001 Ω to 0.600 Ω (3 A to 42 A) | – | – | AC Hipot + Ground Bond dedicated model |
TOS9303 | 5 kV / 100 mA (500 VA) | 5 kV / 20 mA, 7.2 kV / 13.9 mA (100 W) | 0.001 MΩ to 100.0 GΩ (DC -25 V to -1000 V / DC +50 V to +7200 V) | 0.001 Ω to 0.600 Ω (3 A to 42 A) | – | – | AC/DC Hipot + Insulation Resistance + Ground Bond test |
TOS9303LC | 5 kV / 100 mA (500 VA) | 5 kV / 20 mA, 7.2 kV / 13.9 mA (100 W) | 0.001 MΩ to 100.0 GΩ (DC -25 V to -1000 V / DC +50 V to +7200 V) | 0.001 Ω to 0.600 Ω (3 A to 42 A) | 1 μA to 100 mA (rms) | – | AC/DC Hipot + Insulation Resistance + Ground Bond + Leakage Current test |