WARPP INARC-400 I, Руководство пользователя

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If the machine is a single phase machine then each KVA would require around 4.6 Amps of current. That means if
input KVA of the machine is 5 KVA, then it would draw 23 Amps at full load
If the machine is a three phase machine then each KVA would require around 1.4 Amps of current. That means if
the input KVA of the machine is 5 KVA, then it would draw around 7 amps of current at full load
Cable capacity for copper cable can be taken as 5 Amps / Sq mm when cable length is less than 10 meters. That
means 1 sq mm cable can carry a current of 6 Amps of current
Now you have input current of the machine based on its input KVA
You can calculate the conductor size by this formula,
Input current / capacity of conductor
Example : From the above for a single phase machine of 5 KVA you would need 23/6 = 3.8Sq mm cable. ( You can
choose 4sq mm cable)
From the above for a three phase machine of 5 KVA you would need 7/6=1.16Sq mm cable. ( You can choose 1.5
sq mm copper cable for each phase)
Note: When the length of the cable is short the required cross section for input cable will come down
Below table will help you in selecting the right size of welding cable based on the length and current
to be used
Welding Cable selection chart
Welding
Current in
Amps
Recommended Cable size ( Sq mm) based on
length (in Mtrs)
1 ~ 15 Mtrs 15 ~ 30 Mtrs 30 ~ 45 Mtrs 45 ~ 60 Mtrs 60 ~ 75 Mtrs
100 16 25 25 35 50
150 16 25 35 50 50
200 35 35 50 50 70
300 50 50 70 70 95
400 70 70 70 95 120
600 95 95 95
800 140 140
1000 140 190
1200 190 240
1500 240 285
Note:
Table given is just for reference and the actual result may vary depending on the quality
of conductor
Multiple cables can be used where ever single cable of that
capacity is not available
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