Operation Manual -
PoWerMaster®
2400 – 30 - 90 kVA
Transport and Installation
Document no. 578.650BB
Page 22 of 91
4.6
Mains Input
Due to personal health and safety, the Hobart
PoWerMaster®
2400 unit must always be
protected by grounding the PE terminal ( ).
NOTE: The minimum ground wire size is #6 AWG / 16 mm².
Consult local authorities to ensure this meets local requirements.
The utility input connection to the unit should be externally pre-fused according to the table below:
100% load @ PF 0.8 Aircraft:
Rating
30 kW
45 kW
60 kW
90 kW
Line Current @ 400V/480V
38/32 A
58/48 A
75/63 A
112/94 A
Recommended Fuse Size
63 A
63 A
100 A
125 A
Maximum Fuse Size
160 A
160 A
200 A
200 A
Minimum Input Wire size
#8 / 10 mm²
#6 /16 mm²
#4 / 25 mm²
#2 / 35 mm²
Minimum Output Wire size*
#6 / 16 mm²
#4 /25 mm²
#2 / 35 mm²
2/0 / 70 mm²
*Based on single wire at 30 feet, consult the factory for recommendations on different lengths.
100% load @ PF 1.0 Aircraft:
Rating
30 kW
45 kW
60 kW
90 kW
Line Current @ 400V/480V
49/41 A
70/59 A
96/80 A
140/117 A
Recommended Fuse Size
63 A
100 A
125 A
160 A
Maximum Fuse Size
160 A
160 A
200 A
200 A
Minimum Input Wire size
#6 / 16 mm²
#4 / 25 mm²
#2 / 35 mm²
#1 / 50 mm²
Minimum Output Wire size*
#6 / 16 mm²
#4 / 25 mm²
#2 / 35 mm²
2/0 / 70 mm²
*Based on single wire at 30 feet, consult the factory for recommendations on different lengths.
Tightening torques:
Input disconnect:
8 Nm to 17.6 Nm / 72 in-lbf to 156 in-lbf
Input circuit breaker:
14.9 Nm to 21.7 Nm / 132 in-lbf to 192 in-lbf
Output contactor:
17.6 Nm / 156 in-lbf
Due to the RFI filter at the input, the leakage current for the unit is > 40 mA.
4.7
400 Hz Output
At delivery, the 400 Hz neutral is connected to the Protective Earth
terminal (PE). If a floating output is
required, the green/yellow jumper wire must be removed.
Independent of installation method, it is mandatory to meet local regulations and legislation to
ensure personal health and safety.