Presentation - Gossen MetraWatt WZ11 Instrucciones De Servicio

CONTENTS
1.

Presentation ...................................................................................... 7

2. Description ........................................................................................ 7
3. Use ..................................................................................................... 7
4. Characteristics .................................................................................. 8
4.1 Reference conditions ................................................................. 8
4.2 Specifications and references for ordering ................................. 8
4.3 Precision and dephasing ............................................................ 8
4.4 Conditions of use ....................................................................... 8
4.5 Dimensions and weight ............................................................. 9
4.6 Compliance with international norms ......................................... 9
5. Maintenance ...................................................................................... 9
5.1 Cleaning ................................................................................... 9
5.2 Repair ....................................................................................... 9
6. Appendix ......................................................................................... 22
1. PRESENTATION
The WZ11 series miniclamps are designed to measure alternating currents up
to 10 kHz, on low-powered installations, from 10 mA~ to 240 A ~. They can be
used on any multimeter . Depending on model (see 4.2) : single or dual calibre
output, alternating current, alternating voltage or direct voltage.
They have dual insulation or reinforced insulation and comply with international
norms, particularly IEC 61010-2-032 "ammeter clamps". (See 4.6.)
2. DESCRIPTION
– Output : lead length: 1.5 m and 2 m.
— Ratio switch for the WZ11B model.
˜
The raised arrow on top of the unit indicates the direction of the current flow.
The current is considered to flow in the positive direction when it flows from
the current producer to the current consumer. This clamp orientation is
necessary when measuring power (measuring current in parallel with
voltage).
3. USE
Limit the measuring time between 200 and 240 A : 10 minutes on, followed by 30
minutes off.
With the WZ11A model, do not clamp a conductor before connecting the clamp to
the corresponding measuring device. Likewise, do not disconnect the clamp from
the measuring appliance when the clamp is still attached to the cable.
Before connecting the clamp to the multimeter, check that the multimeter has
an appropriate calibre.
Open the jaws and clamp the cable through which the current you wish to
measure is running. Roughly centre the cable in the jaws. Follow the direction
of the arrow, if so required by the application in question.
To read the measurement, apply the appropriate reading coefficient (See 4.2
"Input/output ratio").
NB : for WZ11B model, select the ratio which provides the best resolution and
precision.
(See drawing in 6. Appendix)
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