Installation Manual

Installation Requirements
H-Max Series Variable Frequency Drive MN04008005E—May 2017 www.eaton.com 25
Power Wiring Selection
Line (Mains) and Motor Cable Installation
Motor cable connections are made to terminals U/T
1
, V/T
2
,
and W/T
3
.
Cable Selection: Power and Motor Leads
●
Use UL approved heat-resistant copper cables only
●
75°C or higher for all units rated <480V
●
90°C or higher for all 480V units
●
Line voltage/mains should be Class 1 wire only outside
North America
●
Refer to the following tables for cable sizing guidelines
The input line and motor cables must be sized in accordance
with the rated H-Max VFD input current.
If motor temperature sensing is used for overload protection,
the output cable size may be selected based on the motor
specifications.
Maximum symmetrical supply current is 100,000A RMS for
all size H-Max VFDs.
Input Fusing
Fuses are rated based on H-Max rated output current.
Use Class T (UL or CSA) or type gG/gL (IEC 60269-1).
Refer to Pages 47, 48, and 50 for proper fuse size selection.
Fuses with an operating speed of less than 0.4 seconds may
be used including the following types:
●
High Speed J (UL and CSA)
●
aR (UL recognized, IEC 60269-4)
●
gS (IEC 60269-4)
Consult with Eaton Electrical for further information on fusing
requirements.
Table 11. Power Connection Tightening Torque
Notes
1
The tightening torque for a Torz screw.
2
The tightening torque for an Allen screw.
Note: Strip the motor and power cables as shown in figure
on next page.
Table 12. Spacing Between Parallel Motor Cables
Table 13. Maximum Cable Length by Frame Size without
DV/DT Protected C2 Ratings
North America 208–240V Page 47
North America 380–480V Page 48
All other International 380–600V Page 50
Fame Size
Tightening
Torque
(in-lbs)
Tightening
Torque
(Nm)
FS4 4.5–5.3 0.5–0.6
FS5 10.6–13.3 1.2–1.5
FS6 88.5 10
FS7 70.8
1
/49.6
2
8
1
/5.6
2
FS8 266 30
FS9 354 40
Cable Length Distance Between Cables
Less than 164 ft (50 m) 1 ft (0.3m)
Less than 657 ft (200 m) 3 ft (3.3m)
Frame Size Maximum Cable Length
FS4 328 ft (100m)
FS5 493 ft (150m)
FS6
FS7 657 ft (200m)
FS8 657 ft (200m)
FS9 657 ft (200m)