Megger PVS 100i, Руководство пользователя

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7.2.2.3 Using the High Voltage Sensor HVS 120/36i
Safety instructions for handling the high voltage sensor
Non-observance of the following rules can lead to an arc igniting, which could then
cause serious or even fatal injuries.
• The high voltage sensor may only be used for the specified rated voltage
of up to 120 kV system voltage (corresponds to 70 kV phase to earth
voltage). It must also be mounted on a hot stick approved for the
respective rated voltage.
• If the high voltage sensor is operated on a hot stick which is approved for
a rated voltage <120 kV, the rated voltage of the hot stick is then the
maximum permitted voltage.
• The high voltage sensor may only be used in a dry environment (no
rainfall) and in dry condition (no condensation).
• The sensor and the hot stick should always be kept clean and free of any
possibly conductive residues (e.g. conductive cleaning agents), since dirt
and residues can reduce the protection against bridging. Instructions on
cleaning can be found in chapter 11.
• The hot stick may only be held by the handle when using the high voltage
sensor.
• The hot stick must be handled so that the operator maintains a safe
distance from all live system components. This safety distance is ensured
by the insulating section (see figure on next page).
• When reaching through or past live components, the hot stick may only
be put in as far as the red ring or the lower end of the high voltage sensor
respectively.
• Insulating air gaps may not be shortened when using the sensor.
• Approaching a cable to be tested must always be done radially, in other
words, perpendicular to the cable direction and with sufficient clearance to
components with a different potential (e.g. rods, insulators, other cables).
• No signs, stickers or other markings may be attached to the high voltage
sensor, since these could possibly reduce the protection against bridging.
CAUTION