ABB DCS800 Hardware Manual

Planning the electrical installation
31
3ADW000194R0611 DCS800 Hardware Manual f us
Aspects of fusing for the armature-circuit and field supplies of DC drives
General
Unit configuration
Protection elements such as fuses or overcurrent trip circuits are required in all
cases to protect against further damage. In some configurations, this will entail the
following questions: first, at what point should which protective element be
incorporated? And secondly, in the event of what faults will the element in question
provide protection against damage?
The figure shows the arrangement of the
switch-off elements in the armature-circuit
converter
You will find further information in
publication:
Technical Guide chapter: Aspects
for fusing
Conclusion for the armature supply
In no case standard fusing should be used instead of semi-conductor fusing in order
to save money on installation.
In the event of a fault condition, the small amount of money saved can cause the
semiconductors ot other devices explode and could also cause fires.
Adequate protection against short-circuit and earth fault, as depicted in the
EN50178 standard, is possible only with appropriate semiconductor fuses.
M
.
.
.
.
.
3
2
2
For field supply
see Fig. 2.6/2
AC supply: public mains / plant's mains
Cabinet
M M
DCS converter
2-Q non-regen.
Semiconductor
fuses
Semiconductor
fuses
Semiconductor
fuses
4-Q resp.
2-Q regenerative
DCS converter

ABB DCS800 Specifications

General

Control Type	Digital
Supply Voltage	380 ... 690 V AC
Input Voltage Range	380 V to 690 V AC
Control Mode	Torque, Speed
Cooling Method	Air-cooled
Communication Protocols	Modbus, Profibus, CANopen
Communication Options	Ethernet
Protection Class	IP21, IP54
Enclosure Rating	IP00, IP21, IP54
Protection	Overcurrent, Overvoltage, Overtemperature
Ambient Temperature	0 to 40°C
Field Supply	Integrated or External