▪
Note that if the cable lug is wider than the cross-section width/diameter of the finger guard (see below
table),do not add cable lugs before feeding all cables though the finger guard. Crimp cable lug when the
cables are fed through the finger guard.
Frame
Finger guard cross-section width/diameter (mm)
Material
A
5.5
Plastic
B
8.0
Plastic
C
8.0
Plastic
D
11
Plastic
E
14
Metal
F
14
Metal
G
18.5
Metal
H
30
Metal
J
42
Metal
▪
Install shrinking tube for the uninsulated cable lug to fulfill the clearance and creepage requirement.
▪
To install finger guard for frame size J, firstly connect the load and line
side terminals, then install the upper part of the finger guard by placing
the cables through the slots and tightening the screw on the top, thirdly
close the other part of the finger guard. The bottom part of the finger
guard shall be pushed as close as possible to the cable, and tighten the
other two screws on the sides.
Note:
In case the cables on the power terminals are installed without cable lug, it
is recommended to follow the maintenance manual closely.
5)
Use wired trap circuit or install external capacitive current control.
For configurations with TDJ option (refer to Tables 4, 5, 6), terminals D1-
D1’, D2- D2’and D3- D3’ are
delivered with installed jumpers. When interconnected via an external capacitor contactor (not supplied by
LS Electric) they allow for load dependent disconnection of the trap circuit, if needed. Thus capacitive
current can be minimized for low load operation.
Estimation of required contactor size: The nominal power rating in kW multiplies 20% and the grid voltage,
then divided by the nominal voltage
THE USE OF CAPACITIVE SWITCHES/CONTACTORs IS REQUIRED. OTHERWISE CAPACITOR
LIFETIME MAY BE REDUCED.
6)
Connect monitor switch TS-
TS’
The monitor switch is a relay contact, which is open in ALARM state. It is constituted by a thermal switch
NC 180°C (UL-approved) to detect overload of chokes. It may either be used to remotely disconnect the
drive’s load via respective input of drive control (check drive manual) or as alarm sensor for system
control unit.
AN ENGAGED MONITOR SWITCH MUST LEAD TO IMMEDIATE LOAD SHUTDOWN AND
INVESTIGATION OF THE PROBLEM.
7)
Connect auxiliary switch AS-
AS’
(only relevant for frame J filter types HFS-0530-3-50)
AN ENGAGED AUXILIARY SWITCH MUST LEAD TO IMMEDIATE LOAD SHUTDOWN AND
INVESTIGATION OF THE PROBLEM
The auxiliary switch is a contact, which indicates state of circuit breaker. It is closed under normal
operation (CB on) and is open in abnormal condition (CB off). Abnormal condition can be a short circuit in
the trap capacitors, overcurrent in the trap circuit, too hot ambient temperature or switch-off status in low
load condition (use of motor mechanism together with the circuit breaker
– check relevant section in full
version user manual).
