ICAR by ORTEA NEXT
MAT189 jun19
19 / 40
PEOPLE OR BELONGINGS DUE TO FAILURE IN COMPLYING WITH WHAT STATED ABOVE DURING UNLOADING AND MOVING
OPERATIONS
.
GENERAL
The power factor correction units with automatic step control are used for holding automatically the power
factor of a system at an average value higher than the minimum contractual value. Such automatic control
is obtained thanks to a special electronic reactive power controller with high sensitivity and accuracy.
The unit consists of capacitor banks fitted with modular capacitors which are switched in or out
automatically by means of specific capacitive load contactors (type AC6b), conventional contactors if
provided with blocking inductors or solid-state contactors, depending on the capacitive reactive power
required by the system.
The capacitors are provided with regenerable metallized plastic dielectric, discharge resistors and
overpressure devices.
The unit is housed in a metal cabinet coated with epoxy resins with IP3X.minimum protection degree.
INSTALLATION AND COMMISSIONING
6.1
S
ITE CHOICE
The installation site must comply with the basic requirements listed below:
unless otherwise agreed upon in the contract, the ambient temperature must comply with the limitation
indicated in the following paragraphs;
unless otherwise agreed upon in the contract, the maximum installation altitude is 2000mt a.s.l.
the floor or surface must be flat and able to withstand the unit’s weight;
the installation room dimensions and the airing system must ensure that the generated heat can be
disposed of. Otherwise, a cooling systems must be arranged;
the lighting system must be suitable for normal operating and maintenance routines;
the ground circuit must comply with the relevant applicable rules and regulations;
Avoid direct heat and contact with liquid, flammable or corrosive materials. Do not clog the cabinet air
outlets. Leave enough space around the unit for carrying out connections, maintenance and inspecting
operations.
Check that anti fire devices are available in the area.
6.2
A
MBIENT TEMPERATURE
Being the temperature a crucial parameter for the correct operation of a power factor correction system, the
ambient temperature should not exceed the limits given in the table below:
A
MBIENT TEMPERATURE
[°C]
Minimum
Maximum
Average max temp. for each 24hour period
-5
40
35
All automatic units are provided with a max. temperature alarm which sets the cabinet out-of-service upon
reaching the operational limits. The units are also fitted with forced ventilation. The temperature affects the
capacitor working life. Continuous operation close to the max. operating limits could cause, when associated
with other operating parameters (e.g. presence of harmonics), an important decrease in the working life of
the capacitors.
6.3
A
TMOSPHERIC CONDITIONS
If not previously arranged during the contracting phases, the unit must not be commissioned in case of:
corrosive, explosive or flammable atmosphere;
presence of conductive dust in the environment;
proximity to radiation sources;
possibility of flooding
max. relative humidity higher than 50% at 40°C max. temperature (higher relative humidity at lower
temperatures - e.g. 90% at 20°C - is admitted)..
6.4
A
SSEMBLY
The following types of screws are recommended for fastening the units:
MICROmatic, wall mounting with FISCHER 8
MINImatic, wall or floor mounting with M8 screws
MIDImatic, floor mounting with M8 screws
MULTImatic, floor mounting with screws from M8 to M12
For further details, see annex A.
For assembling IP55 units, see annex D.
The power factor correction units are designed for indoor installation. Please contact the Manufacturer in
case of different installation requirements.