version H28986 2014
Accuracy
5% of F.S.D. typically 2%
Dimensions
Approx. overall 275mm wide, 165mm deep, 165mm high
Weight 2.6 kg
Warnings
For your safety, this product should be used in accordance with these instructions, otherwise the
protection provided may be impaired.
EMC
This equipment is Class A according to the EMC standard EN 55011 and is intended for use in a
non-domestic environment only.
Do not open or remove covers or panels. Repairs and service may only be carried out by our
repair agent, otherwise the warranty may be void.
Use only the 3-core mains cable supplied with the unit. If the mains cable is replaced, the rating of
the replacement must be the same or better than the original.
The unit must be earthed at all times. The unit is earthed/grounded through the 3-core mains lead,
so no additional earth connection is required.
The unit is protected by a T100mA mains fuse, accessible from the top panel. Switch off
and disconnect from mains supply before replacing the fuse. To remove the fuse, use a
small coin or broad flat blade screwdriver to turn the fuse holder by 90 degrees
anticlockwise, then lift it out.
Always position the unit so that it can be disconnected from the mains, if an emergency arises.
This unit is intended for use in DRY conditions. Avoid spillage of water and other liquids on to the
unit. If spillage occurs, disconnect the mains supply.
There is no specific requirement for insulation of external circuits as they cannot become
hazardous live, as a result of connection to this unit. Limit the length of any connecting leads to 3
metres.
For your safety, this product should be used in accordance with these instructions; otherwise, the
protection provided may be impaired. Risk of shock if the unit is opened. Use only the 3-core
mains cable supplied with the unit.
Introduction
The Instrument is based on a solid-state current-voltage multiplier, the signal from which is used to
drive an internal meter and so monitor the power dissipation in the load. Pulses are fed to an
electronic counter at equal increments of energy dissipation in the load, providing a digital
indication of the energy dissipated and to display the power dissipation in the load on an external
meter.
The unit is mains-powered and its drain on the external low voltage supply is low enough to be
neglected in most applications.
Power input to unit from supply = Power output from unit to load.
For more precise work or specialised applications, it is necessary to take into account the internal
parameters of the unit and the nature of the supply and load.
The instrument is suitable for use up to 24V d.c., and 17V a.c. rms, up to a maximum frequency
10kHz, for any waveform.
Power dissipation is in the range 0 to 240W, nominally.
