TERASAKI AME Series, Инструкция по эксплуатации

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KRB-5200h
-5-
Other Precautions
1) Install the ACB main unit vertically.

For AME3B, AME4B and AME6B, the stud bar direction can be changed from horizontal to
vertical in the field.
When changing the stud bar direction, observe the following safety notice. This work must be
done by competent persons.
Caution
(1) Remove the stud fixing screw and then rotate the stud 90° to the vertical position.
Fig. 2
Stud Assembly
(2) Clean the stud mounting face which comes into contact with the ACB terminal.
Dust or foreign materials on the mounting face may cause a fire.
(3) Insert the stud until it comes into contact with the ACB terminal.
Insufficient contact may cause a fire.
(4) Tighten the stud fixing screw to a torque of 19 - 29 N·m.
Insufficient torque may cause a fire. Excessive torque may damage the screw.
(5) Attach the accessory insulating tube to the center pole (S phase) in order to ensure the
insulation distance between phases.
2) Ensure that a mounting angle has sufficient strength to support the ACB mass.
Vibration, in particular, must be taken into consideration.
Be sure to avoid resonance.
Otherwise, vibration of the switchboard could result in false tripping of the ACB.
3) Do not place the ACB in such an area that is subject to direct sunlight.
4) Clean the connecting surface.
It is recommended that the connecting surface of the connecting conductors be subject to
silver-plating or the like in order to reduce the contact resistance on the surface.
5) When applying the frame current continuously, use the connecting conductors whose size is
equal to or larger than shown below.
Otherwise, overheat may result.
ACB Type AME3B AME4B AME6B AME8B AME10B
Frame current * 250A 400A 630A 800A 1000A
Conductor size 150 mm
2
2 x 100 mm
2
2 x 50 x 5 2 x 50 x 5 2 x 60 x 5
*) At ambient temperature of 45
℃
6) Ensure adequate insulation distance (specified per your switchboard) from bare live parts of
terminals and connecting conductors to a mounting angle and bare live parts of other
components.
7) attach the accessory insulating tube to the center pole (S-phase) to ensure insulation against
other poles.
8) Secure the connecting conductors firmly using supporting means so that an electromagnetic
force caused by a large current flowing through the ACB or other harmful force does not directly
act upon the ACB stud.
Stud fixing screw
(hex. socket head screw M10)
ACB
ACB terminal
Mounting face Insulation base Stud (Rotate 90
°
)