Connection Of A Dc Reactor (Fr-Hel) - Mitsubishi Electric FR-D720 K Series Instruction Manual

2.4.5

Connection of a DC reactor (FR-HEL)

(1) Keep the surrounding air temperature within the permissible range (-10C to +50C). Keep enough clearance around the
reactor because it heats up. (Take 10cm or more clearance on top and bottom and 5cm or more on left and right
regardless of the installation direction.)
(2) When using the DC reactor (FR-HEL), connect it across terminals P/+ and P1.
In this case, the jumper connected across terminals P/+ and P1 must be removed. Otherwise, the reactor will not exhibit
its performance.
Since the DC reactor (FR-HEL) is electrically connected to the enclosure through mounting screws, the DC reactor is
earthed (grounded) by being securely mounted to the enclosure. However, if the DC reactor is not earthed (grounded)
securely enough, an earthing (grounding) cable may be used. When using an earthing (grounding) cable, wire the cable
to the installation hole where varnish is removed. (Refer to the Instruction Manual of FR-HEL.)
NOTE
 The wiring distance should be within 5m.
 As a reference, the cable gauge for the connection must be equal to or larger than that of the power supply cables (R/
L1, S/L2, T/L3) and the earthing (grounding) cable. (Refer to page 17.)
 Single-phase 100V power input model is not compatible with DC reactor (FR-HEL).
10cm or more
5cm or
5cm or
more
more
Remove the jumper.
Connection of stand-alone option unit
5cm or 5cm or
more more
P1 P/+
FR-HEL
2
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