S
Stephen RodriguezSep 4, 2025
How to fix a broken protective fuse in Hioki IR4051 Test Equipment?
- SSarah HooperSep 4, 2025
If there is a broken connection in the protective fuse of your Hioki Test Equipment, replace the indicated fuse.
To Next PageTo Next PageHow to fix a broken protective fuse in Hioki IR4051 Test Equipment?
If there is a broken connection in the protective fuse of your Hioki Test Equipment, replace the indicated fuse.
Why won't my Hioki IR4051 Test Equipment turn on?
If your Hioki Test Equipment won’t turn on, first, replace the batteries. If that doesn't work, ensure the batteries are installed with the correct orientation.
Why is the insulation resistance accuracy outside specifications on Hioki Test Equipment?
If, when calibrating your Hioki Test Equipment, the accuracy of the insulation resistance range falls outside the device specifications, use the test leads that came with the instrument or its optional test leads to perform the calibration procedure. The issue might be that the test lead cable insulation resistance is too low.
What to do if Hioki IR4051 Test Equipment unable to perform zero adjustment?
If your Hioki Test Equipment was unable to perform zero adjustment (Low resistance function), verify that there is no broken connection in the test leads.
Why does insulation resistance increase over time on Hioki IR4051?
If the insulation resistance measured value increases over time on your Hioki Test Equipment, it is not a malfunction. If the measured value fluctuates gradually, wait for it to stabilize and then use that value.
Why does Hioki IR4051 give different readings for the same target?
If you get a different measured value each time you measure the same target with your Hioki Test Equipment, it could be due to the effects of the insulator’s polarity. Allow about 1 hour to 1 day to pass after the first measurement before repeating. Alternatively, the differences may be due to the insulator’s temperature characteristics, so measure the target under the same temperature and humidity conditions.
How to measure in 500 V or 1,000 V range on Hioki Test Equipment?
If you are unable to perform a measurement in the 500 V or 1,000 V range on your Hioki Test Equipment, press after setting the rotary selector to the 500 V or 1,000 V range. Note that pressing while holding the MEASURE key will not disable the lock function.
What causes excessive variation in measured values on Hioki IR4051 Test Equipment?
If you experience excessive variation in the measured value with your Hioki Test Equipment, it could be due to induced noise from a nearby charging circuit. Try disconnecting the circuit breaker for any nearby charging circuits. If this isn't possible, use the lowest measured value as your result. Another cause could be a large capacitance component in the measurement target. If possible, remove the capacitor; otherwise, use the lowest measured value.
Why do the batteries run out so fast in my Hioki IR4051?
If the batteries in your Hioki Test Equipment run out immediately, replace the nickel-metal-hydride or manganese batteries with alkaline batteries.
How to troubleshoot Hioki IR4051 Test Equipment when unable to perform measurement?
If you are unable to perform a measurement with your Hioki Test Equipment, try turning off the MEASURE key and then pressing it again. Also, make sure to separate the measurement target from all power sources before taking measurements.
General| Brand | Hioki |
|---|---|
| Model | IR4051 |
| Category | Test Equipment |
| Language | English |
Essential information for safe operation and maintenance.
Ensure normal operation and avoid hazardous locations.
Explains how to use and set the comparator for judgments.
Safety warnings and step-by-step guide for insulation testing.
Highlights risks associated with voltage measurements.
Safety advice for PVΩ measurements on solar panels.
Steps to diagnose and resolve instrument issues.
Lists error codes and their corresponding solutions.
