Power Wiring Selection - Johnson Controls VSD II Series Installation Manual

Installation Requirements

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
●
North America 208–240V
North America 380–480V
All other International 380–600V
The input line and motor cables must be sized in accordance
with the rated VSD Series II VSD 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 VSD Series II VSDs.
22 VSD Series II LIT-12011772—October 2012 www.johnsoncontrols.com
Page 43
Page 44
Page 45
Input Fusing
Fuses are rated based on VSD Series II rated output current.
Use Class T (UL or CSA) or type gG/gL (IEC 60269-1).
Refer to Pages 43, 44, and 45 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 Johnson Controls for further information on
fusing requirements.