Brochure
Table Of Contents
- 2 3RV1 Circuit Breaker/MSP 1)
- 2.1 Specifications/regulations/approvals
- 2.2 Device description
- 2.3 Application and areas of use
- 2.4 Accessories
- 2.4.1 Attachable accessories: Overview
- 2.4.2 Auxiliary contacts 3RV19 01-.., alarm switch 3RV19 21-111 and auxiliary release 3RV19 .2-....
- 2.4.3 Motorized remote-control mechanism 3RV19 .6-....
- 2.4.4 Disconnecting/isolator module 3RV19 .8-1A
- 2.4.5 Thru-the door rotary operators 3RV19 .6-..
- 2.4.6 Terminals for "Combination Motor Controller Type E" in acc. with UL 508
- 2.4.7 Enclosures and mounting accessories
- 2.4.8 Busbar adapter 8US1 (Fastbus system)
- 2.4.9 Isolated 3-phase busbar system
- 2.4.10 Link module for connection to a contactor
- 2.5 Mounting and connection
- 2.6 Dimensional drawings (measurements in mm)
- 2.7 Technical specifications
- 2.7.1 General specifications
- 2.7.2 Permissible rating of approved devices for North America, u s
- 2.7.3 Short-circuit breaking capacity Icn in acc. with IEC 60 947-2
- 2.7.4 Limiter function with standard devices for 500 VAC and 690 VAC in acc. with IEC 60 947-2
- 2.7.5 Characteristics
- 2.7.6 Installation guidelines
- 2.8 Application notes for the use of 3RV1 downstream from frequency converters/ inverter with pulsing voltage
Circuit Breaker/MSP 3RV1
SIRIUS System Manual
GWA 4NEB 430 0999-02 DS 01
2-75
the trip limit. That will compensate for the influences of the installation. You
can then can use the achieved value as a correction factor for similar installa-
tions.
b) Rotational speed control of motors with a response characteristic
controlled Frequency converter
With the adjustment of the linear voltage-frequency-characteristic and a con-
tinual increase in current (see for example operating instructions Micromas-
ter parameter P077 and P078), decreased rotational speed (< 50 Hz) and
constant load torque can lead to the increase of the motor current. With this
adjustment the frequency converters output voltage is not reduced to the
same scale as the output frequency. If this results in nuisance tripping and
can’t be compensated for by a higher setting of the trip release (watch for
motor overload), then minimizing of the current increase or a readjustment
to a quadratic voltage-frequency-characteristic could provide a remedy.