Benning MM 1-1 Instrucciones De Servicio página 15

2. Safety instructions
The instrument is built and tested in accordance with
DIN VDE 0411 Teil 1/ EN 61010-1
and has left the factory in perfectly safe technical condition.
To preserve this condition and to ensure safe operation of the device, the user
must observe the notes and warnings given in these instructions at all times.
The device must be used in electrical circuits of overvoltage
category II with a conductor for a maximum of 1000 V to earth
or of overvoltage category III with a conductor for a maximum
of 600 V to earth only.

Please observe that work on live parts and electrical compo‑
nents of all kinds is dangerous!
Even low voltages of 30 V AC and 60 V DC may be dangerous
to human life.
Before starting the current clamp multimeter, always check the

device as well as all cables for damages.
If it can be assumed that safe operation is no longer possible, switch the device
off immediately and secure it against unintended operation.
Safe operation can be assumed to be no longer possible, if
- the device or the measuring lines exhibit visible damages,
- the device no longer works,
- the device has been stored under unfavourable conditions for a longer
period of time,
- the device was exposed to extraordinary stress during transport.
In order to prevent danger
‑ do not touch the bare measuring probe tips of the measu‑

ring lines,
‑ insert the measuring lines into the respectively designated
measuring sockets of the multimeter.
3. Scope of delivery
The scope of delivery of the BENNING MM 1-1/ 1-2/ 1-3 comprises:
3.1 One BENNING MM 1-1/ 1-2/ 1-3,
3.2 One safety measuring line, red (L = 1.4 m; probe tip Ø = 4 mm),
3.3 One safety measuring line, black (L = 1.4 m; probe tip Ø = 4 mm),
3.4 One measuring adapter with wire temperature sensor type K
(BENNING MM 1-3)
3.5 One rubber suspension fixture,
3.6 One compact protective pouch,
3.7 Two 1.5 V micro (AAA) batteries are integrated into the device,
3.8 One fuse for initial assembly is integrated into the device
(BENNING MM 1-2/ 1-3),
3.9 One operating manual.
Parts subject to wear:
- The BENNING MM 1-1/ 1-2/ 1-3 is supplied by means of two integrated
1.5 V micro (AAA) batteries (IEC 6 LR 03).
- The BENNING MM 1-2/ 1-3 is equipped with a fuse for overload protection:
One quick-acting fuse, nominal current 10 A (600 V), 50 kA (P.no. 748263)
- The safety measuring lines ATL-2 mentioned above (tested accessories)
comply with CAT III 1000 V and are approved for a current of 10 A.
4. Device description
See figure 1a, 1b, 1c: Device front
The display and operating elements shown in figures 1a, 1b and 1c are
designated as follows:
 Digital display, displaying measured value and range exceedance,
 Polarity indication,
 Battery indication, appears in case of discharged battery,
 MIN/ MAX key, storage of the highest and lowest measured value
(BENNING MM 1-2/ 1-3),
5 VoltSensor key, for determining AC voltage to earth,
 RANGE key, switch-over between automatic/ manual measuring range,
 HOLD key, storage of the displayed measured value,
8 Rotary switch, for selecting the measuring function,
11/ 2007
BENNING MM 1‑1/ 1‑2/ 1‑3

13