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6 Electrical Installation
6.1 The Main Circuit
The typical main circuit of VACON® 1000 is shown in Illustration 42.
The circuit breaker (MCB), the motor, and the mains and motor cables are not included in the delivery.
The start-up cabinet and output filter cabinet are optional.
HV~
MCB
M
Junction
cabinet
Startup
cabinet
Drive
KM51
Output filter
cabinet
e30bi650.10
Illustration 42: Main Circuit of VACON® 1000
6.2 Main Circuit Breaker and Fuses
For the short-circuit protection of the drive, install fuses or a circuit breaker on the grid side of the equipment in accordance with all
applicable installation codes.
When selecting the size of the fuses or mains circuit breaker, refer to the available
Short circuit power
Continuous current
Supply voltage
6.3 Galvanic Isolation Between the MV and LV Sections
There is galvanic isolation between the low-voltage (LV) and medium-voltage (MV) sections of the cabinets. The insulation between
the sections protects the devices in the LV section from the medium voltages.
Most of the LV components are in the control cabinet. Only the current sensors (HECS) and some optional components, such as
space heaters, humidity sensors, and thermostat controllers are in the other cabinets. The connections between the LV and MV de-
vices are done either through optical fibers or are electrically isolated.
6.4 Terminals
6.4.1 Terminal Locations in the Standalone Cabinet
AQ363633621020en-000201 / 172F3117 | 47Danfoss A/S © 2021.06
Electrical Installation
VACON® 1000
Operating Guide
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