hhhansen
Electrical
- Jan 14, 2004
- 61
Hi out there
IEC60909 stipulates the principles for short circuit calculations.
It is well known that an arc is generated in case of a short circuit. In our calculation we are neglecting this in order to obtain the maximum short circuit current. But what about the minimum short circuit current to be used for relay settings.
I can not find anything in IEC about requirements for the value of the arc resistance.
Your comments are much welcome.
IEC60909 stipulates the principles for short circuit calculations.
It is well known that an arc is generated in case of a short circuit. In our calculation we are neglecting this in order to obtain the maximum short circuit current. But what about the minimum short circuit current to be used for relay settings.
I can not find anything in IEC about requirements for the value of the arc resistance.
Your comments are much welcome.