High reliability and complete working security are the main
characteristics of
TCC
Series Capacitors.
Reliability is guaranteed by the use of a high quality
dielectric and by rigorous process controls.
Security of the product is guaranteed by a series of protection devices:
Internal Overpressure
Device:
This device is activated when the internal pressure increases due to
internal short-circuits developing at the end of useful working life
disconnecting
the internal connections.
As the case of the capacitor expands for the operation of the pressure
disconnect device, it is necessary to allow at least 10 mm for the case
expansion. Do not use rigid connections.
Discharge resistors:
Internal discharge resistors are used for all capacitors of 55 mm and 65
mm diameter. External resistors are supplied for all capacitors of 75
mm, 85 mm,
100 mm
and 116 mm
diameter. The function of the discharge resistors is to reduce the
voltage between terminals of the capacitor to levels prescribed in the
following Specifications EN 60831/1-2 and IEC 831/1-2.
Inrush Currents:
When capacitors are used as part of an automatic assembly, where a large
number of switching cycles are possible, the inrush current must be
limited to
200
In, otherwise the capacitors may experience reduced life expectancy.
To ensure that life expectancy of the capacitors is protected, these
capacitors should be fitted with suitably rated chokes.
Capacitors of 75 mm, 85 mm,
100 mm
and 116 mm
chokes must be fitted external.
The above can be supplied as an option extra cost on request.
The alternative to chokes it to use special contactors designed for use
with capacitors and equipped with insertion resistors.
The capacitors are assembled in an Aluminium Case with M12 fixing stud.
The 55 mm
and
65 mm diameter capacitors are equipped with M6 screw terminals and the
75 mm, 85 mm, 100 mm and
116
mm diameter units are equipped with a
clamp type terminal.
The
TCC
three-phase capacitor for low voltage Power Factor Correction
complies with the following Standards:
EEC
89/336
Standards (amended
by EEC 92/31 – EMC)
EEC
73/232 Standards (amended by EEC 96/3 – Low Voltage).
The dielectric is metallized polypropylene film, filled with non
polluting biodegradable material (PCB free).
