SEMICONDUCTOR CONVERTORS - APPLICATION GUIDE FOR THE PROTECTION OF SEMICONDUCTOR CONVERTORS AGAINST OVERCURRENT BY FUSES
International Electrotechnical Committee
FOREWORD
Clause
1 Scope and object
2 Normative references
3 Connections and definitions
3.1 Double way connection
3.1.1 Connection A1: Line fuses, non-regenerative
load
3.1.2 Connection A2: line fuses, regenerative load
3.1.3 Connection A3: Arm fuses, regenerative or
non-regenerative load
3.2 Single-way connection (B), regenerative or non-
regenerative load
3.3 Definitions
4 Current carrying capability
4.1 Rated current
4.2 Rated current to be used for continuous duty
4.2.1 Ambient temperature
4.2.2 Mounting and surrounding conditions
4.2.3 Semiconductors in parallel
4.2.4 Pulsed current or low frequency current
4.3 Rated current to be used for repetitive duty
4.4 Overload curve of the fuse
4.4.1 Verified overload capability
4.4.2 Conventional overload curve
4.5 Rated current to be used in case of overload
operation
5 Voltage capacity
5.1 Rated voltage
5.2 Voltages at fault
5.2.1 Non-regenerative mode
5.2.2 Regenerative mode
5.3 Maximum arc voltage
6 Ft characteristics
6.1 Pre-arcing Ft characteristic
6.2 Operating Ft characteristic
6.3 Parallel connection
6.4 Other considerations
7 Breaking range
7.1 At frequencies equal to or greater than rated
7.2 At frequencies less than rated
Advises on the specific fuse features and on the specific convertor features which are to be observed to ensure correct application of semiconductor fuses in convertors, and gives specific recommendations for trouble-free operation of convertors protected by fuses.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | SC 22B |
