Inovance MD880 Series - Main Circuit Terminal Arrangement and Dimensions

3 Electrical Installation
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provide protection on overcurrent and short-circuit, and be able to completely isolate
the AC drive from the electrical power input.
When selecting the protection device, consider the current capacity of the main circuit
cables, system overload capacity, and upstream power distribution short-circuit
capacity. Use recommended values in
"6.1 Options"
.
10) Power grid system
■
If a basic recti󶍾er module is used in the TT and TN power system, it is strongly
recommended that the two grounding screws on the voltage dependent resistor
(VDR) board be installed.
■
If a residual-current device (RCD) is used and it trips at start, remove the EMC screw
2 as shown in the following 󶍾gure.
7%3TDSFX
&.$TDSFX


Figure 3-23 VDR screw and EMC screw
NOTE
◆
For details about main circuit terminal dimensions and cables, see
"3.5.3
Main Circuit Terminal Arrangement and Dimensions"
.
3.5.3 Main Circuit Terminal Arrangement and Dimensions
NOTE
◆
By default, T10 to T12 are equipped with the side entry copper busbar.
You can remove the copper busbar according to actual requirements.
◆
The data and models recommended in this section are for reference only.
The user-selected cable diameter cannot be larger than the terminal width
in the following 󶍾gures.
◆
Selection of IEC cables is based on:
Standards EN 60204-1 and IEC 60364-5-52
PVC insulation
40℃ ambient temperature and 70℃ surface temperature
Symmetrical cable with copper mesh shield
A maximum of nine cables are allowed in a cable tray.