High Frequency SineWave Guardian Installation Guide 380V-480V
Form: SHF-IG-E January 2018 Rev 002 mtecorp.com 8
Power Wiring Connection
Verify that the rating of the filter is compatible with the drive to which it is to be connected. Follow
all detailed drive manufacturer installation and safety instructions. Drive and load cable selection /
placement should be in accordance with the requirements of the NEC and all local electrical
codes and regulations.
The typical interconnection diagrams that follow are shown for a motor load but the load can be
either a motor or a transformer.
•
For panel mounted filter applications, interconnection between the filter, its power
source, the cap-panels, and the drive is shown in Figure 3-2 (p10).
•
For isolation transformer connections between the filter, motor and the drive is shown in
Figure 3-3 (p11).
Wire gauge range and terminal torque requirements as well as selecting conductors that
interconnect the reactor and capacitor assemblies are shown in Table 3-2 (p12).
Refer to the drive user manual for instructions on interconnecting the drive and motor and the
correct start-up procedures for the drive.
The filter is designed for use with copper conductors with a minimum temperature rating of 75
degrees C.
Wiring Checks
Using Figure 3-1 (p9), visually check the wired components to confirm, verify, and correct
wiring. Then, with a multi meter check phase to phase isolation using the 100 K ohm range. The
multi meter will read the parallel equivalent of the bleeder resistors after the capacitors initially
charge. All phase to phase resistance values should be the same.
Check for the Following Faults:
•
Capacitor shorted
•
Capacitor bus not connected
•
Capacitor bus to chassis short
•
Paralleling wiring errors
WARNING
Input and output power wiring to the filter should be performed by
authorized personnel in accordance with the NEC and all local electrical
codes and regulations.
Cable lugs and mounting hardware are provided by the customer.
Any extremely low or high resistance readings indicate miswiring and
may result in damage to filter components if not corrected.
