23
Installation
________________________________________________________________________________________
Area (m
2
) =
ATTENTION!
Operating at surrounding air temp. (Inside the cabinet) higher than 40ºC may
cause damage to the starter.
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less than 0.4 x In (in watts). During soft start and soft stop, heating is approximately three times the
actual starting current (In watts).
Example: For a 100A motor, heat dissipation is less than 40 watts while running and during starting
(for example at 350A), heat dissipation is approximately 1050 watts.
Important note
: If motor is frequently started, cabinet should be designed for the higher heat
dissipation.
Internal enclosure heating can be reduced through the use of additional ventilation.
6.3.1
Calculating the enclosure size, for non-ventilated metallic enclosure
Where:
Area [m
2]
]
- Surface area that can dissipate heat (front, sides, top).
Total heat dissipation [Watt]
±
The total heat dissipation of the starter and other control
devices in the enclosure. If starter is frequently started, average power should be used.
6.3.2
Additional Ventilation
Use the following arrangement for forced ventilation of the RVS-DXM
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6.3.3
UL, cUL Installation Instructions
Input power and output motor field wiring shall be copper conductors, rated 75ºC.
Use UL listed closed-loop connectors sized for the selected wire gauge.
Install connectors using the correct crimp tool recommended by the connector
manufacturer. Applies only to units bus bars.
Table showing corresponding wire size, terminal screw and closed-loop connector
size. Torque ratings for attachment of connector to bus bar (refer to table below).
Branch
circuit
protection, shall be provided per the NEC.
Max. Mot.
FLA
[A]
Min. dimensions for copper
cables
[mm2]
Term
Screw
Mechanical
Torque
[Kg.cm]
8
4 x 1.5 N2XY
17
4 x 2.5 N2XY
31
4 x 4 N2XY
44
4 x 10 N2XY
58
4 x 16 N2XY
72
4 x 16 N2XY
85
4 x 25 N2XY
105
4 x 25 N2XY
M8
180
0.12 x Total heat dissipation [Watts]
60
±
External ambient temp. [ºC]
Air
Outlet
Air
Inlet
Air
Inlet
Fan
SST
