2
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 5 min. after isolating supply before
handling. After the 5 min. wait and as an additional
precaution before commencing work, carefully proceed
with DC voltage measurement on the terminals and make
sure of the capacitor discharge.
For a safe use of CLMD03 capacitor units, please ensure:
1. Installation and maintenance are undertaken only by
authorized and qualified personnel, in accordance with
current local regulations;
2. Isolate the equipment from the supply before
attempting to gain access.
Inspection on reception
Unpack the CLMD03 and check that:
- data on the label correspond to those of your purchase
order and local regulations;
- the CLMD03 is not damaged.
Any loss or damage should be notified immediately to
your closest ABB agent.
Storage
Indoor, in dry, dust free and non-corrosive environments,
protected from vibrations or shocks.
Storage temperature: minimum: -40°C/-40°F, maximum:
75°C/167°F.
Transportation and handling
In case severe conditions of transportation are expected,
make sure the fixation points are strong enough to
withstand weight of the CLMD03 and vibrations that may
occur.
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. Current local regulations.
Protection
IP00 by default and IP20 with optional top cover.
Installation and use
Indoor installation on firm foundation or fixed on a rigid
plate/frame in well-ventilated situations where the air
temperature around the capacitor 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).
Always refer to the nameplate for exact specifications.
WARNING!
The ambient temperature for capacitors
inside a cubicle is the temperature around the capacitors
and not around the cubicle.
WARNING!
Like other standard capacitor units, CLMD03
discharge devices are not suitable for use with rapid
switching rates like thyristor switched banks (minimum off
time: 40 sec). Additional external resistors are not a
solution for such cases. Only specially designed
capacitors must be used in such applications.
Vertical and horizontal mounting
The CLMD03 capacitors must be fixed in such a way as
to ensure a natural airflow from bottom to top.
Several CLMD03 units can be installed side by side,
provided that they are in line (Fig. #1). Triangle and
square configuration are not allowed. The minimum free
space between groups of in-line adjacent units is 25 mm
(Fig. #2 & 3).
In case of vertical mounting, use a punched mounting
plate or support bars to allow free airflow around
capacitors units (Fig. #4 & 5). Do not mount upside down.
(Fig. #6)
In case of horizontal mounting, install so that the natural
airflow goes through the units without major constraints
(Fig. #7). Do not mount so that the natural airflow is
blocked (Fig. #8).
Installation in a cubicle
WARNING!
Guidelines only apply if the following limits
are respected:
- Maximum room temperature: 40°C (1 hour).
- Average maximum room temperature over 24 hours:
35°C.
- Average maximum room temperature over 1 year:
25°C.
When the capacitors are installed in a cubicle the
components should be placed in such a way as to
optimize 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 radiate heat directly
on the capacitors. A thermal barrier is recommended.
Reactors do in general dissipate much more heat, so their
thermal impact through convection must also be taken
into account.
1. Natural air circulation
The difference in height between air inlet and air outlet
should be large enough to improve the air circulation.
The airflow should be channeled 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. The cross-
section of the top air outlet should be at least equal to
1.2 times the cross-section of the bottom air inlet.
2. Forced ventilation
Forced cooling using a fan is sometimes required
(Fig. #8).
Please refer to the following recommendations:
- Consider the maximum ambient temperature of the
installation site including the heating effect of the
capacitor installation itself.
- Consider the heat dissipated from all the components
and apparatus in the cubicle: reactors, capacitors,
contactors, fuses, etc.
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