Capacitors banks BK APC

The bank construction is made in the form of powder-coated sheet steel casing whose size depends on power. The casing has ventilation grilles with filters, which ensures natural air circulation inside the bank and prevents dirt from getting inside the bank. Individual steps of the capacitor bank are connected to busbars selected according to power through fuse disconnectors with fuse links and contactors which connect capacitors to the network. Capacitors banks BK-APC

The main method of improving power factor cosφ is reactive power compensation which can be achieved by installing capacitor bank. Capacitor bank is a source of inductive reactive power and improves the power factor from the place of its installation to the energy source. In other words, instead of drawing reactive power from distant power plants, it is provided from capacitor banks installed on site. The mains is overloaded with the transmission of reactive power. BK APC capacitor bank is selected so as not to fully cover the demand to reactive power whose minor part is still covered by the mains. The capacitor bank is equipped with an electronic power factor controller which ensures a constant, preset cosφ value.

DCRL electronic reactive power controller, manufactured by LOVATO Electric, and 4G10 cam switch, switching on the controller’s power supply are mounted on the door of the capacitor bank.

Parameter	Value
Rated switching voltage [ Un ]	400 V
Rated insulation voltage [ Ui ]	690 V
Measuring voltage of the controller	100 - 400 V
Measuring voltage of the controller	50 Hz
Rated power	up to 25 do 500 kvar
Measured current range	0,01 - 5,3 A
Measuring transformer accuracy class	max 2
Cos φ setting range	0,8 ind - 0,8 poj
Heat losses	0,5 W / 1 kvar
Number of steps activated by the controller	3 to 12
Ambient temperature	-25°C ÷ +45°C
Protection degree	IP 40
Cooling	natural or forced

Capacitor banks BK APC are available in three versions:

standard
with compensation step activation control
with contactor damage control (if main contacts are bonded)

No.	Power [ kvar ]	Number of steps	Casing size			Casing type
No.	Power [ kvar ]	Number of steps	Width	Height	Depth	Casing type
1	25 / 5	3	900	800	400	hanging
2	35 / 5	3
3	45 / 5	4
4	55 / 5	4
5	60 / 10	4
6	70 / 10	4
7	80 / 10	5
8	90 / 10	5
9	100 / 12,5	5
10	112,5 / 12,5	5
11	60 / 10	4	600	2000	600	standing
12	90 / 15	4
13	100 / 12,5	5
14	125 / 12,5	6
15	150 / 15	6
16	200 / 20	6
17	250 / 25	6
18	300 / 25	7	800	2000	600
19	350 / 25	7	800	2000	600
20	400 / 25	9	1000	2000	600
21	450 / 25	10	1000	2000	600
22	500 / 25	11	1200	2000	600

Compliant with the following standards:

Regulations on Construction of Power Engineering Equipment (sheet)
Regulations on Operation of Power Engineering Equipment – SEP
PN-EN 61921:2004(U); PN-EN 60439-1:2003; PN-EN 60529:2003; IEC 61921:2003 standards
Technical Conditions for Execution and Acceptance of Construction and Assembly Works. Electrical Installations.

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