Gossen MetraWatt 702 Bedienungsanleitung PDF herunterladen (Seite 34)

34 GOSSEN METRAWATT GMBH

11.7 Testing Extension Cables for VDE 0701, Part 1, and VDE 0702

(option: EL1 adapter)

Extension Cables up to 5 m Long

Protective conductor resistance between the earthing contact at the

mains plug and all exposed metal parts may not exceed 0.3 Ω for safety

class I devices. This value may not exceed 1 Ω for permanently

connected data processing systems (DIN VDE 0701, part 240).

Extension and Connector Cables Longer than 5 m

Per DIN VDE 0702, an additional cable resistance of 0.1 Ω, however, not

more than 1 Ω, is allowable as of a length of 5 m for each additional

7.5 m.

Resistance testing for cables longer than 5 m is thus advisable (see also

limit values on page 17).

Note

☞

The EL1 accessory adapter is required for testing for short-

circuiting and interruption of single-phase extension cables.

Connecting the Extension Cable or the Multiple Outlet

Note

☞

The keys in the adapter’s handle have no function.

Performing the Test

➭

Connect the extension cable to the EL1 adapter as shown in the figure

above.

➭

Select the “Ext. Cable” test from the initial menu with the cursor and

acknowledge with the

key: Ext. Cable

WITH EL1.

➭

Select “Start Test” with the

key.

➭

Start the measurement sequence with the

key.

➭

First perform and acknowledge visual inspection of the extension cable.

➭

Enter the length of the cable with the

and

keys. Acknowledge with

the

key.

PROBE 5 4

(21)

EL1

SECUTEST

Device Under Test =

Extension Cable

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 47 48

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