Fluke 45 user manual Testing Current Input Fuses

45

Users Manual

Current Input Fuses

The 100 mA and 10 A inputs are protected by user-replaceable fuses.

•The 100 mA input is protected by a fuse rated at F 500 mA, 250 V (Fast blow), 1500 A minimum breaking capacity, IEC-127 Sheet I.

•The 10 A input is protected by a fuse rated at F 15 A, 250 V (Fast blow), 10,000 A breaking capacity, [or F 15 A, 600 V, (Fast blow), 10,000 A minimum breaking capacity].

Rear Panel

Power-Line Cord Connector

To remove,

Squeeze and slide out

F3 Line Fuse

(T 125 mA, 250 V, Slow Blow)

Fuse Holder

(Spare fuse provided)

qb12f.eps

Figure 6-1. Replacing the Line Fuse

Testing Current Input Fuses

Perform the following procedure to test these fuses:

1.Plug a test lead into the Xinput terminal and power-up the meter.

2.Press Oto select the ohms function.

3.Insert the test lead probe into the 100 mA input terminal.

If the fuse is good, the meter will read between 11 Ω and 15 Ω . If the fuse is blown, the meter will read >10 MΩ to OL.

4.Remove the test lead probe from the 100 mA input terminal and insert it into the 10A input terminal.

6-2