, BKD-W 1 Technicl description Rective power compenstors re designed for compensting rective power (improving power coefficient cos? ) in low voltge networks in industril sites nd division sttions.in the event tht higher current nd voltge hrmonics re present, we lso provide BKD-W rective power compenstors with rectors. Thnks to implementtion rective power compenstion modern micro-possessor type REGO 5 (7.12) rective power controlls, the device utomticlly dpts the power of ctivted cpcitors to network requirements so tht the required power coefficient is mintined t ll times. The rective power compenstor ensures highest efficiency nd thus quick return on investment by eliminting rective power chrges nd reducing ctive power bills by 3 to 7%. Rective power compenstor design The rective power compenstor is mde s freestnding cubicle mde of steel sheets (optionlly luminium sheets), which re electrostticlly powder pinted. The design is compct, esy to ssemble nd nesthetic. Cubicle door is equipped with: Control switch (disconnecting ll cpcitors), indictor lmps, REGO 5(7.12) regultor, regultor power indictor. A single cpcitor circuit comprises: Regultor control output, switch-fuse unit cting s protection device, contctor with resistor, which ctivtes cpcitor, power cpcitor. Protection device rting nd the type of contctor re selected individully depending on the cpcitor size in given unit. BK- W power cbles cn be run from the top or bottom (loction where the cbles re run cn be lso selected). Compct construction sves spce while the modulr design llows expnsion of the rective power compenstor or incresing its rted power. rective power compenstor fetures dvnced three-phse power cpcitors produced by the Itlin compny DUCATI energi s. p..these re dry type cpcitors which re non-toxic nd neutrl to the environment.cpcitor coils re mde of metllised polypropylene film nd prt equipped with overpressure, overlod protection device. In the event of locl rcing, the dielectric regenertes itself. Individul cpcitor phses re equipped with induction coils limiting inrush current, which extend cpcitor nd switchger lifetime.optionlly power regultor nd cpcitors of rective power compenstor cn be provided by nother mnufcturer. Complince with stndrds switchger meets the requirements of the following stndrds: PN-EN 61921:2005 Power cpcitors - Lowvoltge power fctor correction bnks"; PN-EN 60439-1:2003 +:200 Low-voltge switchger nd controlger ssemblies. Prt 1: Type-tested nd prtilly typetested ssemblies ; PN-EN 60529 : 2003 Degrees of protection provided by enclosures (IP code) ; Certified by the Electrotechnicl Institute Rective power compenstors incorported in ZR-W nd Instl- Blok switchger cubicles re embedded in their structure. Low voltge switchger 67
Specifiction of low voltge rective power compenstors instlled in switchger cubicles: Rted frequency 50 [Hz] (60 [Hz] on specil order) Rted voltge 230, 400, 415, 450, 550 [V] Ambient temperture -25 [C]... +50 [C] Enclosure degree of protection IP 4X Cpcitnce tolernce -5%... +10% Overlod protection Overpressure Dischrge resistors Dischrge down to 50V within one minute Totl ctive power losses 0,5 [W/kVAr] Mximum operting voltge 1,1 UN Mximum operting current 1,3 IN Test voltge -terminl to terminl 2UN/50Hz/2s -terminl to enclosure 3kV/50Hz/10s Operting position customer's choice Complince with stndrds CEI 33-5, IEC 831, PN-EN 61921:2005 Cpcitor specifiction for UN = 400V Power QN [kvar] Current IN [A] Cpcitnce CN [F] Dimension L [] Weight [kg] 5 7,2 3 x 33,2 79 2,3 10 14,4 3 x 66,3 79 2,3 12,5 18 3 x 82,9 79 2,3 15 21,7 3 x 99,6 148 4,8 20 28,9 3 x 132,6 148 5 25 36,1 3 x 166 148 5 30 43,3 3 x 199 217 7,5 40 57,7 3 x 265 286 10 50 72,2 3 x 332 286 10 68
Opertion principle Rective power compenstor llows compensting rective power ccording to regultor settings by switching on nd off individul cpcitors. Figure 1.1 presents simplified digrm showing connection of rective power compenstor to network grid. Rective power regultor determines the technicl specifiction nd operting prmeters. For metering methods nd rective power compenstor control process plese refer to REGO 5(7.12) regultor Opertor's Mnul. Figure 1.1. Rective power compenstor connection to power grid 1 Low voltge switchger rective power compenstor Receiver network to be compensted rective power compenstor bsic technicl dt Type Rted rective power 50 480 kvar * Rted power per steps 5 60 kvar * Number of compenstion steps 4 12 Rted voltge 400 V Rted insultion voltge 0,69 V Rted frequency 50 Hz Rted short-time withstnd current of busbrs 20 ka (1s) Rted pek current strength of busbrs 40 ka Degree of protection IP 3X Comptibility with current trnsformer 5 [A] Power supply From the bottom or top * consult the mnufcturer to design the rective power compenstor with higher rted power 69
Exmple of rective power compenstor cpcitor bnk digrm Three-phse grid digrm L1 L2 L3 N PE 1 2 3 4 5 6 7 8 9 10 11 12 Copper busbrs K1 LGY 4 2 LGY 4 2 LGY 10 2 LGY 10 2 LGY 10 2 WTN-00C 20A WTN-00C 20A WTN-00C 40A WTN-00C 40A WTN-00C 40A K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 Q=10 kvar Q=10 kvar Q=20 kvar Q=20 kvar Q=20 kvar Control digrm L1 L2 L3 N B1 Łk 15 B2 B3 1 1 1 2 2 2 5 3 1 6 4 2 K1 A2 K2 A2 K3 A2 K4 A2 70 K5 A2 K6 A2 K7 A2 K8 A2 K9 A2 K10 A2 K11 A2 X1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NEF B7 B4 B5 L1 NEF L2 NEF L3 NEF L1 L2 L3 N A 1 2 3 4 5 6 7 8 9 10 11 12 R KTS Rective power regultor: REGO 12 M Went. K L 400 0
Exmples of configurtion Electricl digrm BKD-W Electricl digrm Description 1275 550 1 (up to 110 kvar mximum 4 steps) 1275 BKD-W1 (up to 110 kvar mximum 4 steps) - rective power compenstor powered by min busbrs of LV switchger - rted power of 1 nd BKD-W1 up to 110 kvar - mximum number of steps - 4; - depth of 1 is 400 or 320 - depth of BKD-W1 is 400 Low voltge switchger 2 (up to 190 kvar BKD-W2 (up to 190 kvar - Rective power compenstor powered by min busbrs of LV switchger - Rted power of 2 nd BKD-W2 up to 190 kvar - mximum number of steps - 6; - depth of 2 is 400 or 320 - depth of BKD-W2 is 400 550 1275 3 (up to 190 kvar - rective power compenstor powered by min busbrs of LV switchger - rted power of 3 up to 190kVAr - mximum number of stges - 6; - depth of 3 is 400 or 320 71
Electricl digrm BKD-W Electricl digrm Description 4 BKD-W4 - rective power compenstor powered by min busbrs of LV switchger - rted power of 4 nd BKD-W4 up to 240 kvar - mximum number of steps - 6; - depth of 4 is 400 or 320 depth of BKD-W4 is 600 750 5 (up to 360 kvar mximum 12 steps) BKD-W5 (up to 360 kvar mximum 12 steps) - Rective power compenstor powered by min busbrs of LV switchger - Rted power of 5 nd BKD-W5 up to 360 kvar - mximum number of steps - 12; - depth of 5 is 400 or 320 - depth of BKD-W5 is 600 1100 6 (up to 480 kvar mximum 12 steps) BKD-W6 (up to 480 kvar mximum 12 steps) - Rective power compenstor powered by min busbrs of LV switchger - Rted power of 6 nd BKD-W1 up to 480 kvar - mximum number of steps - 12; - depth of 6 is 400 or 320 - depth of BKD-W6 is 800 1200 1500 72
Electricl digrm Description RBK3 or NH switch disconnector- - power supply from the top - Rted power of 7 up to 240 kvar - Mximum number of steps - 6; - depth of 7 is 400 or 320 7 Low voltge switchger MCCB 250 630 A - power supply from the top - Rted power of 8 up to 240 kvar - mximum number of steps - 6; - depth of 8 is 400 or 320 8 73