CIRCUTOR EMK Series - Manual (Page 10)

EMK series
Instructions Manual M98118701-01-12A 10
5 INSTALLATION
5.1 Preparation
The CIRCUTOR EMK static capacitor banks are prepared for an easy installation and start-up.
Remove the equipment's packaging and verify that the unit's electrical features are suitable for
connection to the grid at the site to be installed. For this, check the features label located inside
the cabinet, next to the regulator, refer to Fig. 4-1 as an example. Key data to be checked are:
- Mains frequency and voltage, U
n
/ f
n
.
- Nominal power of the capacitor bank, Q
n
(kvar) and steps composition
- Current consumption, I
max
(See label) . This current is the one to be considered when
selecting the proper size of the power supply cable and the circuit breakers and other
protection elements to be connected upstream the equipment.
- Auxiliary control voltage, U
aux
. This voltage is used to feed the CPCxx controllers and
other auxiliary elements. The line is usually protected by a circuit breaker of suitable size
(See section 5.3.3)
- Environmental conditions. (See section 4.3)
5.2 Installation location
It is important to maintain a minimum distance around the equipment to facilitate the cooling. In
self-standing cabinets, the back and front sides of the cabinet must be kept at least 50 cm away
from walls and other equipment to allow for ventilation. Regarding the sides, it is recommended
that a separation of 10 cm be maintained between adjacent equipment. On wall hung cabinets, it
is recommended that at least 20 cm of separation should be maintained between the sides of
adjacent equipment.
NOTE: Static units have one or more aluminium heatsinks for cooling the thyristors. Periodically
clean these heatsinks with a brush or with compressed air and ensure that they have maximum
ventilation.
Make sure that the equipment can be accessed easily.
The environmental conditions of the location where the equipment is installed must not surpass
the limits established in the technical features (See section 4.3)
To ensure proper ventilation, the unit must be installed in a vertical position.
In accordance with most National Electric Codes and LVD, once the unit is installed, it must be
protected against electric shock hazard due to direct or indirect contacts; therefore, a circuit
breaker and an earth leakage protection relay should be provided for the capacitor bank's supply
line.
5.3 Connection of the capacitor bank to the grid
Check that the rated voltage of the capacitor bank matches the voltage between
phases of the grid where it is to be connected. Also check the voltage of the auxiliary
circuits U
aux
. Regarding this issue, refer to section 5.3.3
For feeding cables into the capacitor bank cabinet, always use the entry points
available for this purpose.
Do not drill holes in the cabinet walls for feeding cables through them or for installing
support brackets. Drilling will produce shavings that can cause short-circuits.