Bell & Gossett 176R0649C Technologic 502 Series Pump Controller - Manual (Page 15)

15
Line Input (Mains) Connection
• Size wiring based upon the input current
of the drive. Recommended wire sizes are
provided on the connection drawing of the
unit.
• Local codes must be complied with for cable
sizes.
Figure 3-5. Input Power Panel with Line Disconnect
Exterior Interior
OT 45...100 M3
Ground lug
Line (mains)
disconnect
Ground bar
L1 L2 L3
Wire Type Rating
• Use wiring corresponding to the wire
rating specification provided.
• The wire rating specification is located
on the wire rating label inside the cover
of the option panel.
Terminal Tightening Torques
• Tighten all connections to the torque
specification provided in Table 3-2.
WARNING !
r
un input powEr
,
motor wiring and control wiring in
tHrEE sEparatE mEtallic conduits or racEways for HigH
frEquEncy noisE isolation
. f
ailurE to isolatE powEr
,
motor and control wiring could rEsult in lEss tHan
optimum drivE and associatEd EquipmEnt pErformancE
.
• Connect 3-phase AC input power wire
to terminals L1, L2, and L3 on the main
disconnect located in the input power panel
(see Figure 3-3).
• Depending on the configuration of the
equipment, input power may be connected
to a circuit breaker or input disconnect.
• Use with Isolated Input Source. Many
utility power systems are referenced to earth
ground. Although not as common, the input
power may be an isolated source. All drives
may be used with an isolated input source
as well as with ground reference power
lines.
notE
s
EE
f
igurEs
3-12
and
3-13
for powEr
,
motor and control
wiring diagrams
.