Read This First - ABB QCap Série Instructions D'installation, D'utilisation Et D'entretien

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Before installation, read this notice carefully and
keep it at disposal of people in charge of installation,
maintenance and operation.

Read this first

Safety
WARNING! Wait 1 min. after isolating supply before
handling.
For a safe use of QCap capacitor units, please ensure
• Installation and maintenance are undertaken only
by authorized and qualified personnel, in accor-
dance with current local regulations;
• Isolate the equipment from the supply before at-
tempting to gain access.
The QCap will disconnect itself from load by a built-in
overpressure disconnector in case of failures. This
overpressure disconnector will break all three wires
connected to the load through the expansion of the
QCap lid. The overpressure disconnection works
properly only under service conditions specified in
this manual and IEC60831. QCap could end its life
with an unexpected way under excessive current and
voltage stress compared to its normal overcurrent
and overvoltage capacity.
Inspection on reception
Unpack the QCap unit and check that:
• data on the label correspond to those of your pur-
chase order and local regulations;
• the QCap unit is not damaged;
• the QCap enclosure is hermetic. If any damage is
found on the QCap, which could compromise the
hermetic enclosure, such capacitor must not be
used any more.
Any loss or damage should be notified immediately
to your closest ABB agent.
Storage
Indoor, in dry, dust free and non-corrosive environ-
ments, protected from vibrations or shocks.
Storage temperature: minimum: -40°C/-40°F, maxi-
mum: 75°C/167°F.
Transportation and handling
During transportation and handling, care must be
taken to ensure the tightness of the hermetic enclo-
sure remains intact.
WARNING! Failure to respect the installation rules
may lead to premature failure, other material damage
to installations or bodily injury.
Installation
Applicable standards
IEC 60831 Parts 1 and 2. CSA C22.2 n°190. UL810 Cur-
rent local regulations.
Protection
The QCap is an IP20 protected capacitor unit.
L O W V O LTA G E C A PA C I T O R S Q C A P - E N G L I S H
Installation and use
Indoor installation on firm foundation or fixed on a
rigid plate/frame in well-ventilated situations where
the ambient temperature does not exceed 35°C/95°F
over one year, 45°C/113°F over 24 hours and
55°C/131°F (according to IEC 60831 Parts 1 and 2 for a
-25/D temperature category product).
WARNING! The ambient temperature for capacitors
inside a cubicle is the temperature around the capac-
itors and not around the cubicle.
WARNING! Like other standard capacitor units, QCap
discharge devices are not suitable for use with elec-
tronic based rapid switching rates (typically. less
than 5 sec.). Additional external resistors are not a
solution for such cases. Only specially designed ca-
pacitors must be used in such applications.
WARNING! Use stranded copper conductors only.
Vertical and horizontal mounting
The QCap capacitors must be fixed in such a way as
to ensure a natural airflow between QCap units.
In case of vertical mounting, use a punched mount-
ing plate or support bars to allow free airflow around
capacitors units (Fig. #1 and 2). A minimum spacing
of 30 mm between units is required.
In case of horizontal mounting, install so that the
natural airflow goes through the units (Fig. #2). When
mounting in horizontal position, additional mechani-
cal support is recommended to prevent breaking of
mounting bolt in case of mechanical shock or vibra-
tions (Fig. #3).
A minimum space of 20mm above the terminals must
be available to allow the cover and terminals to ex-
pand at the end of the life of the QCap.(Fig. #4).
Installation in a cubicle
When the capacitors are installed in a cubicle the
components should be placed in such a way as to op-
timize the cooling. Do preferably place devices with
high heat dissipation above the capacitors to avoid
overheating them. When reactors are used they
should be placed in such a way that they do not radi-
ate heat directly on the capacitors. A partition is usu-
ally recommended. Reactors do in general dissipate
much heat, so their thermal impact through convec-
tion must also be taken into account.
1. Natural air circulation
The difference in height between air inlet and air out-
let should be large in order to improve the air circula-
tion. The airflow should be channelled in such a way
as to well cool the hottest spots in the cubicle. Air
should flow from the bottom to the top of the cubicle
(Fig. #5). The cross-section of the top air outlet
should be at least equal to 1.2 times the cross-sec-
tion of the bottom air inlet. For an example of a
proper horizontal mounting of the QCap capacitors
inside a cubicle, please refer to Fig. #5.