Megger Three-Phase TTR, Инструкция по эксплуатации

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M
AVTMTTR330 Rev 3 March 2010
8
made and the last removed. Any interruption of the grounding connection
can create an electrical shock hazard.
 Personnel using heart pacemakers should obtain expert advice on the
possible risks before operating this equipment or being close to the
equipment during operation.
Input Power precautions
This instrument operates from a single-phase, sine wave, power source. It has a
three-wire power cord and requires a two-pole, three-terminal (live, neutral, and
ground) type input source. The voltage to ground from the live pole of the
power source must be within the following rated operating voltage:
For Cat. No TTR330 120 V ±10%, single phase sine, 50/60 ±2 Hz
For Cat. No. TTR330-47 230 V ±10%, single phase sine, 50/60 ±2 Hz
The neutral pole must be at ground potential. Before making connection to the
power source, determine that the instrument rating matches the voltage of the
power source. The power input plug must be inserted only into a mating
receptacle with a ground contact. Do not bypass the grounding connection. Any
interruption of the grounding connection can create an electric shock hazard.
Determine that the receptacle is properly wired before inserting the plug.
For test sets energized with 230 V input (TTR330-47), the neutral terminal of the
input supply cord (white or blue lead) must be connected to the neutral pole of
the line power source. The ground terminal of the input supply cord (green or
yellow/green lead) must be connected to the protective ground (earth) terminal
of the line power source. The black or brown cord lead is the live (hot) lead.
The control circuits of the instrument are protected by two mains circuit fuses.
These fuses are located in the ON/OFF switch module and are replaceable by
the operator. To avoid electric shock and fire hazard, use only the fuse specified
in Sections 6 and 8, that is identical in respect to type, voltage rating, and current
rating. Refer to the
Fuse Replacement procedure in the Section 6.
F
WARNING
Before replacing the fuses, disconnect the
power input plug from the live power source.