Hand Operating Mechanism Nemd; Application; Rated Data; Working Conditions - ABB NAL Series Installation And Operating Instructions Manual

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M O U N T I N G A N D O P E R AT I O N M A N U A L I N D O O R A I R S W I TC H - D I S C O N N E C TO R , N A L / N A L F/ V R
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11.0 Hand operating mechanism
NEMD

11.1 Application

The reciprocating drive is intended for operating
indoor switch-disconnectors type NAL and E / EB
earthing switches. The operation can be
performed manually by operating the
maneuvering lever in a reciprocating movement.
It is designed for mounting on the front of the
panel in tower type switchgears (drive installation
below the level of the apparatus).
It is possible to use a mechanical lock, which
increases the safety of the operator (locking of
the drive is performed by installing padlock that
prevents inserting the maneuvering lever and
blocking the position of the front lever. Please
specify the type of apparatus (NAL / F switch or
E, EB earthing switch) to which the drive is
required when placing order.
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34 Hand operating mechanism NEMD arrangement

11.2 Rated data

• Fitter's lock with a padlock
• MAX 90 manoeuvring angle of rotation
o
• Mechanical performance of 2000 operations
• Hand operating mechanism (for NAL) -
1YMX888739M0001 (operating angle 10-35
measured from level),
• Hand operating mechanism (E, EB) -
1YMX888739M0002 (operating angle 10-30
measured from vertical)

11.3 Working conditions

The NEMD type drive is designed for operation in
indoor switchgears in normal service conditions
with:
• ambient temperature (-5
• maximum relative air humidity 95%
o
o
C + 40 C),
o o