To Next PageTo Next PageWhy does insulation resistance increase over time on Hioki IR4052?
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 Test Equipment 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 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 Test Equipment?
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 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.
What to do if the measured value is the maximum on Hioki IR4052 Test Equipment?
If the measured value is shown as the maximum display value when using Hioki Test Equipment, check the continuity of the test lead with a tester. Also, verify that the test leads are securely connected to both the instrument and the measurement points.
General| Type | Insulation Tester |
|---|---|
| Category | Test Equipment |
| Test Voltage | 50V, 125V, 250V, 500V, 1000V |
| AC Voltage Measurement | 600V |
| DC Voltage Measurement | 600V |
| Display | Digital LCD |
| Power Supply | LR6 (AA) alkaline batteries ×4 |
| Battery Life | Approx. 20 hours (continuous use) |
| Dimensions | 159 mm × 177 mm × 53 mm |
| Weight | Approx. 600 g (including batteries) |
Introduction to the insulation tester and its intended use.
Detailed identification and explanation of instrument controls, display elements, and terminals.
Steps for preparing the instrument, test leads, and performing pre-measurement checks.
Setting up the PASS/FAIL judgment function with selectable reference values.
Detailed procedure for measuring insulation resistance, including voltage selection and safety.
Procedure for safely discharging the test object after measurement to prevent electric shock.
Instructions for performing AC voltage measurements and checking for live conductors.
Steps for measuring low resistance, including essential zero adjustment.
Procedure for measuring insulation performance of solar panels using the IR4053.
Details on functions, live circuit indicator, and automatic electric discharge.
Covers accuracy, warranty, operating/storage conditions, IP code, and voltage ratings.
Specific technical data for Insulation Resistance Measurement, including ranges and accuracy.
Guidance on diagnosing and resolving common instrument issues and error messages.
Step-by-step instructions for replacing batteries and fuses with safety notes.
Procedure to replace the tip pin on the optional L9788-10 test lead.
Explanation of the underlying principles for different measurement types.
Methods and characteristics for performing insulation resistance tests on solar cell arrays.
