CALTRAP
™
Installation and Operations Manual
2
2. POWER SOURCE
2.1 Voltage
Check the unit’s nameplate to make certain that the voltage rating is suitable for
operation at the supply (line) voltage. These units are capable of operation at a
maximum of 110% of nameplate rated voltage (RMS, 50 or 60 Hz).
2.2 Conductor (Wire) Size
See
TABLE 1
on next page for recommended wire size.
2.3 Disconnect Devices and Ratings
Equipment shall be capable of being disconnected from power source with switch,
fuse switch or circuit breaker. See
TABLE 1
for recommended current ratings.
2.4 Connections to Power Source
Equipment shall be connected to power source as shown in
FIGURE 1
.
FIGURE 1
CONNECTION TO POWER SOURCE DIAGRAM
Connecting the Caltrap
™
to the drive terminal and also adding a disconnect is the
best way to connect your Caltrap
™
. Not only do you keep harmonic currents from
the drive cables, you also have a means to disconnect the Caltrap
™
from the drive
circuit. This will allow maintenance, if needed, to the Caltrap
™
while keeping the
motor system still online. This is particularly important if you cannot shut down
your process any time you might want to
– for example, in an injection molding
operation.)
Power leads shall be straight and without kinks or loops. Lead length should be
such that no strain is applied to the power lead connector. Power leads shall be
firmly clamped in connectors by tightening connector bolts. Wire lead strands
should not move in connector when the lead is moved from side to side by hand.
Improper (loose) connections will cause terminal overheating and possible early
failure of the capacitor cells.
2.5
Equipment Ground
All units are provided with ground connector lug(s) within the enclosure to facilitate
grounding per National Electrical Code, Articles 460-10 & 250.
Motor
M
Drive
Disconnect
(optional)
Drive or System
Disconnect
Caltrap
™