FAQ
Home » Blog » FAQ » How to select the right cable?

How to select the right cable?

Before you select kind of cable for your consumer, you need to calculate expected operating current of cable which depends from rated power of your consumer. After that, before you select kind of cable for your consumer, you need to check size of cable which needs to satisfy next conditions:

1. you need to check cable if it satisfied limits in normal conditions without consequences in aspect of warming (normal work),

2. you need to check cable if he satisfied limits in abnormal conditions without consequences in aspect of warming (short circuit).

1. when you want to check cable if he satisfied limits in normal conditions, you need to choose installation place (trench, concrete channel etc.), you need to know heat resistance of land, you need to know appropriate temperature of land and you need to calculate number of cables in installation place.

Icalculate=number of cables*k1*k2*k3*k4*Irated cable>Irated (consumer)
k1 depends from installation place,
k2 depends from heat resistance of land,
k3 depends from appropriate temperature of land,
k4 depends from number of cables

2. when you want to check cable if he satisfied limits in abnormal conditions, you need to calculate expected current of short circuit and heat impulse in the place of installation.

If your cable satisfied these requirements, then you made the right choice.

Post a Comment:

    
Calculate (8 - 4) =

You may also like:

As far as I know all variable frequency drives with vector control can also be run with just V/F control. A drive in vector control mode has several tuning parameters to increase or decrease motor ...
Transformers are rated in {VA, kVA, MVA etc.} due to flows of active and reactive power through transformer. In case of transformer we have active power losses as consequence of existence inside resistance of ...
As using soft starter could result in reducing torque of the motor. Soft starter normally reduces starting current by reducing starting voltage. However, decreasing voltage will lead to starting toque ...
For now I am working on a mining project which involves starting two SAG mills, the method of starting these mills is by rotor resistance and likewise we are using an energy recovery system (SER), could ...
1: Torque boost: this function is the variable speed drive increases output voltage (mainly in low frequency) to compensate the torque loss due to voltage drop in the stator resistance, thereby improving the ...
Gozuk Service Gozuk Blog: all about electric motor control & drives industries development in energy saving applications.

Featured

Like pumps, fans consume significant electrical energy while serving several applications. In many plants, the VFDs (variable ... energy consumedA frequency inverter controls AC motor speed. The frequency inverter converts the fixed supply frequency (60 Hz) to a ... Motor starter (also known as soft starter, motor soft starter) is a electronic device integrates soft start, soft stop, ... Soft starter allows the output voltage decreases gradually to achieve soft stop, in order to protect the equipment. Such as the ... Soft Starter reduces electric motor starting current to 2-4 times during motor start up, reduces the impact to power grid during ...

In Discussion