This instruction manual contains warnings and safety rules about the 4118A digital PSC loop tester
This manual provides detailed instructions for operating the Kyoritsu 4118A digital PSC-loop tester, including safety precautions, instrument layout, test lead specifications, and measurement procedures for loop impedance and prospective short-circuit current. It also covers operating conditions, safety categories, and troubleshooting.
The tester is designed for single-phase AC systems (230V) and supports both phase-to-earth and OLD-TT system phase-to-neutral measurements. It features overload and overheat protection, manual and auto-test modes, and displays measurements in ohms and amperes with 3 1/2-digit resolution. This manual is written in Chinese.
| Measurement Range - Loop Impedance | 0.00–19.99 Ω / 0.0–199.9 Ω / 0–1999 Ω |
|---|---|
| Measurement Range - Prospective Short-Circuit Current | 0.0–199.9A / 0–1999A / 0.00–19.99kA |
| Operating Temperature | 0 to +40℃ |
| Storage Temperature | −20 to +60℃ |
| Dimensions | 186×167×89mm |
| Weight | 750g |
| Power Source | 230V, 50Hz |
| Protection Degree | IP 54 |
The loop impedance range is 0.00–19.99 Ω, 0.0–199.9 Ω, and 0–1999 Ω.
For models 4118A without D-LOK circuitry, all RCDs (RCCB, ELCB) must be bypassed during testing, except on the loop-2000Ω range.
The nominal test current for the 2000Ω range is 15mA, which avoids tripping RCDs with low differential current (30mA).