
HPS Rotary Screw Compressor Units
070.700-IOM (MAR 21)
Page 14
Installation
Mini mum burden ratings
See the following table for the minimum CT burden rat
-
ings. This is a function of the distance between the motor
starting package and the compressor unit.
Table 7: Minimum CT burden ratings
Burden
rating
Maximum distance from
Frick panel
ANSI
VA
Using #
14 Awg
Using #
12 Awg
Using #
10 Awg
B-0.1
2.5
15 ft
25 ft
40 ft
B-0.2
5
35 ft
55 ft
88 ft
B-0.5
12.5
93 ft
148 ft
236 ft
Control power regulator
Johnson Controls can supply a
control power regulator for
compressor units in areas that suffer brownouts and other
significant power fluctuations. See the following figure.
Figure 19: Regulator installation example