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Safety Summary
Safety Terms in this Manual
This instrument has been designed and tested in accordance with IEC Publication 1010,
Safety Requirements for Electronical Measuring, Control and Laboratory Equipment. This
Service Manual contains information, warnings, and cautions that must be followed to
ensure safe operation and to maintain the instrument in a safe condition. Use of this
equipment in a manner mot specified herein may impair the protection by the equipment.
This meter is designed for IEC 64, Installation Category II use. It is not designed for use in
circuits rated over 48000VA.
Warning statements identify conditions or practices that could result in personal injury or
loss of life.
Caution statements identify conditions or practices that could result in damage to the
equipment.
Symbols Marked on Equipment
Danger - High voltage
Ground (Earth) Terminal
Protective ground (earth) terminal. Must be connected to safety earth ground
when the power cord is not used. See Section 2.
Attention — refer to the manual. This symbol indicates that information
about the use of a feature is contained in the manua
l. This symbol appears in
the following places on the rear panel:
1. Ground Binding Post (left of line power connector). Refer to “Using
External DC Power” in Section 2.
2. Alarm Ouputs/Digital I/O Connectors. Refer to Appendix A, Specifications.
AC Power Source
The instrument is intended to operate from a ac power source that will not apply more
than 264V ac rms between the supply conductors or between either supply conductor and
ground. A protective ground connection by way of the grounding conductor in the power
cord is required for safe operation.
DC Power Source
The instrument may also be operated from a 9 to 16V dc power source when either the
rear panel ground binding post or the power cord grounding conductor is properly
connected.