Safety Precautions - Arbiter Systems 918B Operation Manual

4 Introduction
positive and sleeve negative, will allow such a power supply to be
used to operate and charge the 918B.

1.5 Safety Precautions

The following general safety precautions must be observed during
all phases of operation of this instrument. Failure to comply with
these precautions or with specific warnings elsewhere in this manual
violates safety standards for the design and intended use of the
instrument. Arbiter Systems, Inc. assumes no liability for the user's
failure to comply with these requirements.
Beware of Hazardous Voltages
The 918B Phase Angle Multimeter is capable of measuring voltages
up to 1000 volts. Use extreme caution when working around high
voltages. Failure to do so could result in personal injury or death.
Do Not Connect (-) Input Terminal to Voltages in Excess of ± ± ± ± 25
Volts From Earth Ground.
The 918B was designed for use with the (-) input connected to
ground or circuit neutral. Application of more than ±25 volts with
respect to earth ground may result in the potential for electric shock
or damage to the instrument. This precaution is of particular
importance when the charger is connected to the instrument.
Do Not Make Current Connections Directly to the 918B Current
Input.
The current inputs of the Model 918B are designed to accept only
the output of a current transformer. The transformer is necessary to
provide voltage isolation, and to convert the measured current to a
value that can be safely applied to the current inputs of the
instrument. Never connect the current to be measured directly to the