Schaffner Group
User and Installation Manual
Ecosine evo
October 2018
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III.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 Schaffner,
except in NEMA 3R type filters) 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: see
box to the right.
THE USE OF CAPACITIVE
SWITCHES/CONTACTORs IS REQUIRED.
OTHERWISE CAPACITOR LIFETIME MAY BE
REDUCED.
III.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.
III.7
Connect ecosine line side terminals L1, L2, L3
to power input protection (current limiting fuses – see below).
IP 20 enclosure cable wiring please refer to the remarks for the load side cable wiring (III.4).
Note: For IP 20 filter versions the IP 20 finger guard must be installed in order to achieve
IP 20 protection. When the finger guard is not installed, Schaffner do not guarantee IP 20
protection.
Contactor performance estimate:
Example: FN 3440-
55
-115
The nominal power rating in kW
multplies 20% and the grid voltage,
then divided by the nominal voltage
(400 V for FN 3440, 480 V for
FN 3450 and FN 3452) is the
approximate reactive power
Contactor rating =
