S430 5KV Insulation Test Set product image 1

S430 5KV Insulation Test Set product image 2

S430 5KV Insulation Test Set product image 3

S430 5KV Insulation Test Set product image 4

S430 5KV Insulation Test Set product image 5

S430 5KV Insulation Test Set image thumbnail 1

S430 5KV Insulation Test Set image thumbnail 2

S430 5KV Insulation Test Set image thumbnail 3

S430 5KV Insulation Test Set

6 DC test voltages from 100 V to 5 kV
Insulation resistance up to 10 TΩ at 5 kV
IR, PI, DAR, DD, step voltage and ramp test modes
Selectable noise filter and GUARD connection for surface-leakage control
Leakage current during testing and capacitance results after the test
Automatic discharge and auto-save for up to 1,000 test records
USB PC software and Bluetooth app for trends, logging and export

Request a Quotation Download Manual Download Datasheet Download Brochure

Product Description

The S430 is a 5 kV insulation resistance tester for maintenance and condition assessment of motors, generators, transformers, cables and switchgear. It provides six DC test-voltage settings from 100 V to 5 kV and measures insulation resistance from 0.01 MΩ up to 10.0 TΩ. The available resistance range and accuracy depend on the selected test voltage.

Timed insulation testing with PI and DAR, dielectric discharge, step voltage and ramp functions helps compare insulation behaviour over time and at different applied voltages. The instrument displays leakage current during an insulation test and capacitance after completion, with separate external AC/DC voltage measurement up to 1000 V. Stored records, USB PC software and a Bluetooth app support trend review and data export.

Technical FAQ

What DC test voltages and resistance range does the S430 provide?

The S430 provides 100 V, 250 V, 500 V, 1 kV, 2.5 kV and 5 kV DC test settings. Its overall insulation-resistance range is 0.01 MΩ to 10.0 TΩ, with the 10.0 TΩ upper limit available at 5 kV. At 5 kV, 0.01 MΩ to 200 GΩ is specified at ±3% rdg ±5 dgt, and 200 GΩ to 10.0 TΩ at ±15% rdg ±5 dgt. The upper range and accuracy bands change with the selected test voltage.

How does the S430 calculate PI and DAR?

The default PI calculation is R10min / R1min, and the PI timing can be configured. DAR1 is R60s / R15s, while DAR2 is R60s / R30s. PI requires a test long enough to reach the configured later reading, and DAR requires the 60-second reading. These ratios help assess moisture and contamination; they do not identify every type of insulation defect.

When are leakage current and capacitance displayed?

The S430 displays leakage current while the DC insulation test voltage is applied. After the insulation-resistance test is completed, it calculates and displays the test object capacitance. External AC/DC voltage measurement is a separate function with a maximum specified measurement voltage of 1000 V.

What is the purpose of the GUARD terminal?

GUARD diverts unwanted surface leakage around the sensitive measurement circuit so it does not distort the resistance of the selected insulation path. LINE and EARTH form the measurement circuit; the required GUARD connection depends on the test object and insulation path described in the manual.