PhiCap Capacitors for Power Factor Correction

Transcription

1 PhiCap Capacitors for Power Factor Correction Product Profile

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3 PhiCap AC Capacitors for Power Factor Correction General The PhiCap series, is a well approved and reliable EPCOS MKP (Metalized Polypropylene) capacitor series for AC current applications with long time of field experiences, more than 25 years. The power range varies from kvar and kvar per single capacitor can, depending on a three-phase or singlephase capacitor design. The PhiCap capacitor is especially intended for power factor correction in industrial and semi-industrial applications. The capacitors are manufactured using metalized polypropylene film as dielectric and housed in a cylindrical aluminum case. Type Number Decoding System PhiCap Capacitor Type B32344-B4071-A540 Phase Three-phase 4 Three-phase 3 Single phase 0 Revision B32344-B4071-A540 (7.5 kvar 5%/+10% 440 V AC three-phase 50/60 Hz) 7.5 kvar Output power 1/2 = 50 60Hz 5%/ +10% Rated voltage AC 2 = = = = = = = 20/25 30 = = = 80 PhiCap applications a Power factor correction (PFC) a Automatic capacitor banks a Fixed PFC (power factor correction) applications, e.g. motor compensation a AC power electronics a Uninterruptible power supplies (UPS) a Drive engineering User benefits Electrical a Up to 25 kvar per case for threephase applications a Up to 5 kvar per case for singlephase applications a Long expected life cycle, hours a High pulse current withstand capability (100 * I N ) Mechanical & Maintenance a Reduced mounting costs, easy installation and connection a Low weight and compact volume a Any mounting position except upside down a Maintenance free Safety a SH type (self-healing capacitor type) a Overpressure disconnector Environment a Non-polluting, environment friendly product a PCB-free product (NPCB) EPCOS AG 3

4 The PhiCap is a self-healing (SH), metalized polypropylene film capacitor. The current-carrying AlZn metal layer (the best alloy for an electrode) is vapor-deposited onto one side of the film, the surface of dielectric. Compact design low weight and small volume The entire three-phase capacitor is composed of three single-phase element stacks. The electrodes are connected by metal spraying layer (shooping process) on the face ends of the winding elements. The winding elements are encapsulated in a cylindrical aluminum case and hermetically sealed either by a press-rolled metal lid or plastic disc with fast-on terminals. Dual safety systems a Self healing: the capacitor repairs itself, in case of overload. SH capability prevents permanent dielectric breakdown in case of sporadic voltage surges, overcurrent or overtemperature. a Overpressure disconnector: this prevents the capacitor from bursting at the end of its service life, or caused through electrical or thermal overload. In case of permanent self-healing attempts caused by repetitive very high peak voltages or other overloads will result in permanent breakdown. In such a case the safety switching device will be activated and disconnect (cut off) the capacitor winding elements from the power source by means of internal pressure raising (expansion of the capacitor Al-case). Design hint: Due to the increase of the capacitor s height, in a breakdown case, it is necessary to provide enough clearance obove the capacitor s terminals. Connection Technology a Simplifying the capacitor s parallel connection (double fast-on terminal or double wire clamping screw terminals) a Discharge resistors already mounted; standard for extra reliability and safety (included in delivery) a Cable connection layout (terminals) adjusted to secure safe clamping of required cable crosssection. Double fast-on terminal Connected Disconnected Winding C 1, 2, 3 Detail B Detail A 4 EPCOS AG

5 PhiCap Capacitor Selection To specify and select the capacitors for PFC several factors affect the performance and the expected life time of the capacitors: a Voltage a Harmonics a Temperature (UCT) a Load (overcurrent) a Inrush current Permanent overvoltage shortens the capacitor s life cycle. The capacitor s rated voltage must be equal or higher than the operating voltage of the circuit, the capacitor will be connected too. Harmonics produce overvoltage and overcurrent on capacitors themselves. If the total harmonics distortion level for voltage e.g. exceeds 5%, serious damages to installation may occur by the resonance of the circuit. In such cases an implementation of series reactors (de-tuning) is recommended. Operation of the capacitors above the upper category temperature (UCT) level will accelerate the degradation of dielectric and shorten the capacitor s life cycle. Residual voltage should not exceed 10% of rated voltage while reswitching of capacitors. During charging period of the capacitors the current is very high if switched in automatic capacitor banks, it is very likely that discharged capacitors are connected to charged ones already connected to the grid. In such cases the maximum permissible transient peak current is 100*I N. During the switching process thermal- and electrodynamic- stresses are developed caused by transient over-currents of high amplitude and frequency and may damage the system. Capacitor contactors with preloading resistors or seriesinductance (cable twins between contactor and capacitor) will avoid excessive transient currents. 50% Active power meter Apparent power (cos =1) Grid Q P S X 50% Reactive power meter Capacitor for compensation 100% PhiCap Power factor improvement Compensation of harmonics EPCOS AG 5

6 Technical Data Standards IEC and IEC 831-2/96 Overvoltages Û U N + 10%; (1.1*U N), up to 8 h daily, 1.15 *U N 30min/24h; 1.20*U N for 5 min or 1.30*U N for 1min during life 200 times Overcurrent I max 1.3 * I N Inrush current I S 100 times rated current Rated frequency f 50/60 Hz Losses 0.5 W/kvar Capacitance tolerance 5%/+10% Test voltage, terminal/terminal U TT 2.15 * U N; AC, 2s Test voltage, terminal/case U TC 3000 V AC, 10s Life expectancy t LD(Co) 80,000 operating hours Ambient temperature category LCT/UCT 25 C/D (max. 55 C) Cooling Permissible max. humidity H rel 95% Maximum permissible altitude Mounting position Mounting and grounding Safety features Discharge resistors Case Degree of protection Dielectric Impregnation Terminals Approval Naturally air-cooled (or forced cooling) 2000 m above sea level No restriction Threaded M 12 (10 Nm) for case size diam. 53mm M 8 ( 4 Nm) for case size diam. 53mm SH (self-healing) technology, overpressure disconnector Discharge module included in delivery (B32340-, B32343-, B32344-) Extruded aluminum can IP20, indoor mounting (optional IP32) Polypropylene film NPCB (non-pcb, vegetable oil based resin) Screw terminals for B32344-series; fast-on terminals for B & B32343-series UL for B series up to 450 V AC cul applied for other series High inrush current withstand capability, a big benefit Capacitors for power factor correction applications undergo a lot of switching. Switched capacitors have to cover high inrush currents without reducing their own service life. The pulse strength of this technology comes from the enlarged contact area (heavy edge metalization) and spray-metal contact (winding element face side). This is most important in case of: a Parallel switching of capacitors a Non-detuned capacitors a Capacitor banks using standard contactors Service life up to 80,000 operating hours After an appropriate drying period in a high vacuum chamber during the production process, to eliminate the moisture on the active element, the capacitor is filled with biodegradable soft resin. This production process helps to avoid oxidation and partial discharges and results in capacitance stability over a long life time. 6 EPCOS AG

7 Three-phase capacitors: rated voltage 220 V AC, 50/60 Hz, delta connection 50 Hz 60 Hz I max, RMS C N d x h Weight Product / Type Output I N Output I N A µf mm kg Ordering code kvar A kvar A in lb *9.0 53* B32343-C2001-A * * B32343-C2001-A * * B32343-C2011-A * * B32343-C2011-A * * B32344-B2021-A * * * B32344-B2021-A * * * B32344-B2051-A * * * B32344-B2071-A * * * B32344-B2101-A020 Three-phase capacitors: rated voltage 230 V AC, 50/60 Hz, delta connection * * B32343-C2002-A * * B32343-C2002-A * * B32343-C2012-A * * * B32343-C2012-A * * * B32344-B2022-A * * * B32344-B2052-A * * * B32344-B2072-A * * * B32344-B2102-A030 Capacitor B32344-Series Creepage distance Clearance Diameter (ø) Expansion 9.6 mm 12.7 mm 79.5 mm / 89.5 mm max. 13 mm Mounting M12 M5 Torque T=10 Nm T=2.5 Nm Toothed washer J12.5 DIN 6797 Hex nut BM12 DIN 439 or C61010-A415-C15 EPCOS AG 7

8 Three-phase capacitors: rated voltage 380 V AC, 50/60 Hz, delta connection 50 Hz 60 Hz I max, RMS C N d x h Weight Product / Type Output I N Output I N A µf mm kg Ordering code kvar A kvar A in lb *6.0 53* B32343-C3011-A *9.0 53* B32343-C3011-A * * B32343-C3021-A * * B32343-C3021-A * * B32343-C3051-A * * B32344-B3071-A * * * B32344-B3101-A * * * B32344-B3121-A * * * B32344-B3151-A * * * B32344-B3201-A * * B32344-B3251-A080 Three-phase capacitors: rated voltage 400 V AC, 50/60 Hz, delta connection *7.0 53* B32343-C4012-A * * B32343-C4012-A * * B32343-C4022-A * * * B32343-C4022-A * * * B32343-C4052-A * * * B32344-B4071-A * * * B32344-B4072-A * * * B32344-B4101-A * * * B32344-B4102-A * * * B32344-B4122-A * * * B32344-B4152-A * * * B32344-B4202-A * * B32344-B4252-A000 8 EPCOS AG

9 Three-phase capacitors: rated voltage 415 V AC, 50/60 Hz, delta connection 50 Hz 60 Hz I max, RMS C N d x h Weight Product / Type Output I N Output I N A µf mm kg Ordering code kvar A kvar A in lb *6.0 53* B32343-C4012-A *9.0 53* B32343-C4012-A * * B32343-C4022-A * * * B32343-C4022-A * * B32343-C4052-A * * B32344-B4071-A * * * B32344-B4072-A * * * B32344-B4102-A * * * B32344-B4122-A * * * B32344-B4152-A * * * B32344-B4202-A * * * B32344-B4252-A * Three-phase capacitors: rated voltage 440 V AC, 50/60 Hz, delta connection *5.0 53* B32343-C4011-A *5.5 53* B32343-C4012-A *7.0 53* B32343-C4011-A *8.0 53* B32343-C4012-A * * B32343-C4021-A * * * B32343-C4022-A * * * B32343-C4051-A * * * B32343-B4052-A * * * B32344-B4071-A * * * B32344-B4072-A * , * * B32344-B4101-A * * * B32344-B4102-A * * * B32344-B4121-A * * * B32344-B4151-A * * * B32344-B4152-A * * * B32344-B4201-A * * B32344-B4251-A040 EPCOS AG 9

10 Three-phase capacitors: rated voltage 480 V AC, 50/60 Hz, delta connection 50 Hz 60 Hz I max, RMS C N d x h Weight Product / Type Output I N Output I N A µf mm kg Ordering code kvar A kvar A in lb *4.5 53* B32343-C4012-A * * B32343-C4012-A * * B32343-C4022-A * * B32343-C4022-A * * B32344-B4052-A * * * B32344-B4071-A * * * B32344-B4072-A * Three-phase capacitors: rated voltage 525 V AC, 50/60 Hz, delta connection *4.0 53* B32343-C5012-A *5.5 53* B32343-C5012-A * * B32343-C5022-A * * * B32343-C5022-A * * * B32344-B5071-A * Capacitor B32343-Series Creepage distance 10.5 mm (ø 53) 10.0 mm (ø 63.5) Clearance 13.0 mm (ø 53) 16.5 mm (ø 63.5) Diameter (ø) 53 mm 63.5 mm Expansion max. 12 mm Mounting M12 (ø 63.5 mm) M8 (ø 53 mm) Torque T=10 Nm T=4 Nm Toothed washer J12.5 DIN 6797 J8.0 DIN 6797 Hex nut BM12 DIN 439 BM 8 DIN 439 or C61010-A415-C15 10 EPCOS AG

11 Single-phase capacitors: rated voltage 220 V AC, 50/60 Hz 50 Hz 60 Hz I max, RMS C N d x h Weight Product / Type Output I N Output I N A µf mm kg Ordering code kvar A kvar A in lb * B32340-C2001-A * * B32340-C2011-A * * B32340-C2021-A * Single-phase capacitors: rated voltage 230 V AC, 50/60 Hz * B32340-C2002-A * * B32340-C2012-A * * B32340-C2022-A * Single-phase capacitors: rated voltage 380 V AC, 50/60 Hz * B32340-C3001-A * * B32340-C3011-A * * B32340-C3021-A * * B32340-C3031-A * * B32340-C3051-A * Single-phase capacitors: rated voltage 400 V AC, 50/60 Hz * B32340-C4012-A * * B32340-C4022-A * * B32340-C4032-A * * B32340-C4051-A * * B32340-C4052-A * EPCOS AG 11

12 Single-phase capacitors: rated voltage 440 V AC, 50/60 Hz 50 Hz 60 Hz I max, RMS C N d x h Weight Product / Type Output I N Output I N A µf mm kg Ordering code kvar A kvar A in lb * B32340-C4001-A * * B32340-C4011-A * * B32340-C4021-A * * B32340-C4031-A * * B32340-C4032-A * * B32340-C4051-A * Single-phase capacitors: rated voltage 480 V AC, 50/60 Hz * B32340-C4001-A * * B32340-C4011-A * * B32340-C4021-A * * B32340-C4031-A * Single-phase capacitors: rated voltage 535 V AC, 50/60 Hz * B32340-C5011-A * * B32340-C5031-A * Capacitor B32340-Series Creepage distance Clearance Diameter (ø) Expansion 10.0 mm 16.5 mm 63.5 mm max. 12 mm Mounting Torque M12 T=10 Nm Toothed washer J12.5 DIN 6797 Hex nut BM12 DIN 439 or C61010-A415-C15 For other PFC Components please order EPCOS Catalog No. EPC: EPCOS AG 12

13 Table to define the capacitor s Reactive Power Q c TARGET Q cos = 0.96 cos 1 current achievable (ACTUAL) (TARGET) Q Q c = P mot * F (0.96) = [kvar] c tan cos cos 100 * 1.01 = kvar Faktor F Q C = P A * (tan 1 tan 2) Q C [kvar] = P A * F = Active Power [kw] * Factor F P A = S * cos = Apparent Power * cos tan according cos values ref. table Example: Actual motor power P = 100 kw ACTUAL cos : 0.60 TARGET cos : 0.96 Factor F from the table: 1.01 Capacitor s Reactive Power Q C: Q C = 100 * 1.01 = kvar 13 EPCOS AG