Benning IT 100, Operating Manual

Page: 34 / 42

6.3 Testing the fuse
Maintenance
5225 / 04/2022 en BENNING IT 100 34
6.3 Testing the fuse
The device is protected against overload by means of a fuse (FF 315 mA, 1 000 V, 10 kA). Only
use the device with the fuse being functional.
Requirements
• Voltage-free device [
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Figure 12: Testing the fuse
Procedure
1. Set the rotary switch of the device to switch position “LoΩ”.
2. Press and hold the “TEST” key until a measured value or “FUSE” is shown on the digital
display.
While pressing and holding the key, “TEST” is shown on the digital display and the value in
the display area is initially reset (“- - -”).
– Measured value: The fuse is functional and you can carry out a low-resistance or
insulating resistance measurement.
– “FUSE”: The fuse is defective. Please replace it [
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