Installation; Power Requirements; Basic Connections - Extech Instruments 7630 Operation Manual

Returning the Instrument
When it is necessary to return the instrument for servicing or calibration, repackage the
instrument in its original container, please include all accessories and test leads. Indicate the
nature of the problem or type of service needed. Also, please mark the container
"FRAGILE" to insure proper handling.
If you do not have the original packaging materials, please follow these guidelines:
• Wrap the instrument in a bubble pack or similar foam. Enclose the same information as
above.
• Use a strong double-wall container that is made for shipping instrumentation. 350 lb. test
material is adequate.
• Use a layer of shock-absorbing material 70 to 100 mm (3 to 4 inch) thick around all sides
of the instrument. Protect the control panel with cardboard.
• Seal the container securely.
• Mark the container "FRAGILE" to insure proper handling.

2.2 Installation

2.2.1 Power Requirements

This instrument requires a power source of either 115 volts AC ± 15%, 47~63 Hz single phase
or 230 volts AC ±15%, 47~63 Hz single phase. Please check the rear panel to be sure the
proper switch setting is selected for your line voltage requirements before turning your
instrument on. AT the same time, please must use the sure fuse for the instrument. It's
specification is marked in rear panel of instrument. Please must turn off input power to avoid
dangerous before replace the fuse.
Do not switch the line voltage selector switch located on the rear panel while
CAUTION
the instrument is on or operating. This may cause internal damage and
represents a safety risk to the operator.

2.2.2 Basic Connections

Power Cable
Before connecting power to this instrument, the protective ground (Earth)
WARNING
terminals of this instrument must be connected to the protective conductor of
the line (mains) power cord. The main plug shall only be inserted in a socket outlet
(receptacle) provided with a protective ground (earth) contact. This protective ground (earth)
must not be defeated by the use of an extension cord without a protective conductor
(grounding).
The instrument is shipped with a three-wire power cable. When the cable is connected to an
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