3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01
65
Application planning
6
6.1
Use with frequency converters
Frequency converter and SENTRON VL circuit breaker combination
SENTRON VL circuit breakers can be used as primary connection protection devices in
systems in which frequency converters, variable-speed drives, and electronic motor control
devices are used. The thermomagnetic and electronic trip units of the SENTRON VL circuit
breakers can be used in these applications. The SENTRON VL trip units are not influenced
by harmonic effects due to the r.m.s. measurement.
9WR9+]
4
9/
*
&RQYHUWHU
0
0
Figure 6-1
Frequency converters
Table 6- 1
Circuit breaker ↔ converter
Upstream: Circuit breaker
Downstream: Converter
Application
Trip unit
Motor Protection
Electronic
Yes
Electronic
Yes
System protection
Thermo-
magnetic
Yes
Note
Alternative circuit breakers
SIRIUS 3RV circuit breakers can be used as an alternative for applications up to
approximately 45 kW .
Summary of Contents for SENTRON 3VL series
Page 2: ......
Page 10: ...Table of contents 3VL molded case circuit breakers 10 System Manual 03 2009 110 0110 02 DS 01 ...
Page 350: ...Correction sheet 3VL molded case circuit breakers 350 System Manual 03 2009 110 0110 02 DS 01 ...
Page 358: ...Glossary 3VL molded case circuit breakers 358 System Manual 03 2009 110 0110 02 DS 01 ...
Page 359: ......