Page 34 - ELECTRONICON_Katalog_PFC-60Hz

MOUNTING INSTRUCTIONS

Termination Torques
Do not exceed the permitted torque of the terminal screws (design K, L/L4, M) and the mounting studs. The test values specified
by IEC 61068 must be guaranteed as a minimum value.
All CAPAGRIP™ terminals are equipped with Torx screws (T20). Use of improper screw-drivers may damage the screws and impair
reliable fixation.

Terminal Minimum size Cable size with Cable size if Max. nominal Recommended
design of inserted flat ferrule or plug without ferrule current torque
(mm )
conductor
(Nm)
(A)
MOUNTING INSTRUCTIONS L, L4 5.5 … 6.8 x 1.2 2.5 ... 10 16 ... 25 30 1.8 ... 2.5 chart 9
(mm )
2
2
W x H (mm)
K
10
4 … 4.8 x 1.2
2.5 ... 3.0
10 ... 25
43
35 ... 50
M
16 ... 35
8 … 9.8 x 1.2
4.0 ... 5.0
80
Discharge
Standard IEC 60831 requires a safety discharge to ≤ 75 V within 3 minutes in order to protect maintenance personnel from acci-
dental injury by residual voltage.
»!« Capacitors must be discharged and short-circuited before working on the terminals.
In order to minimize the switching strain and to avoid high energizing currents by connection in phase opposition, capacitors
shall be discharged to ≤10 % of the rated voltage prior to being re-connected if switched by mechanical devices (mag ne tic
contactors). Note that in automatic capacitor banks, very often shorter discharge cycles may be required (e.g. < 50 V within
60 seconds).

Use rapid discharge reactors or switchable discharge resistors for very short discharge cycles (see chapter “Switching and
Discharging Capacitors”, pgs. 36ff).

Discharge Modules
For capacitors in CAPAGRIP L/M, separate discharge modules in finger-proof housing (IP20) are available for the discharge of
single units or groups of paralleled capacitors. The correct size of the module to be applied can be taken from the selection
matrix on pg. 46f.
»!« The discharge resistors may become very hot (up to 200°C) during continuous operation!
For CAPAGRIP L/M only: Remove the lid of the discharge module if applying protective caps to the capacitors!

Capacitors in CAPAGRIP K and CAPAGRIP II (L4) are equipped with internal discharge resistors for a discharge within no more
than 60 seconds from their highest rated voltage to less than 50 V.

Earthing
Capacitors with a metal case must be earthed at the mounting stud or by means of a separate metal strap or clamp.

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