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Three-phase capacitors

Three-phase capacitors
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Three Phase Capacitors Three phase low voltage power capacitors LPC LPC 10..50 kVAr → Equipped with discharge resistors (Discharge time ≤ 3 minutes to 75 V) → Capacitors 1 ... 5 kVar connected with a double FASTON connector Included protection cover for electrical parts) → 10 ... 50 kVar capacitor terminals with universal screws (for slot "flat" screwdriver + Allen key "Imbus") → Overpressure disconnection system → rated power range: 1kVAr to 50kVAr → Rated voltage range: 400, 440 460, 480, 525 V → Ground fixation with thread, for vertica

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Three Phase Capacitors APPLICATION The LPC capacitors are used for reactive power factor correction of inductive consumers (transformers, electric motors, rectifiers, fluorescent lamps and many others in industrial networks) individually or assembled into automatic capacitor banks. DELTA CONNECTION DESCRIPTION R R S T LPC capacitors are manufactured with low loss metallized self-healing S T polypropylene film. Dry type capacitors are filled with a non-toxic an Ic ecological polyurethane resin, this resin provides an excellent heat dissipation properties. This capacitors are mounted in...

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Three phase low voltage power capacitors LPC

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Three phase low voltage power capacitors LPC

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£TIThree Phase Capacitors ■- Technical data Standards -5% +10% 50Hz (60Hz upon request) -25°C ... +55°C* <0.2 W/kVAr <0.45 W/kVAr 1,1 x Un 1,5 x In 2% 25% Incorporated; < 3 min to 75V Delta Aluminium case Overpressure Metalized polypropylene film, self-healing 2,15 x In 2 sec. 3KV for 10 second. AC Connector 200 x In IP 20, indoor mounting Max 95% 120.000 Hrs. (Temp. level C) Max. 2000 above sea level Capacitance tolerance Frequency Temperature range Dielectric losses Total losses Maximum over voltage Maximum over current Max. THD in voltage Max. THD in current Discharge...

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Three Phase Capacitors Extra discharge resistors for fast and secure discharge of capacitors LPC EDR 1K8, 10W 004656798 1K8 10 30 To connect extra discharge resistors, 2 auxiliary contacts NC on capacitor duty contactor must be used Set of 2 extra discharge resistors for fast and secure discharge of capacitors Type Code No. Resistance Power Weight Packaging [ohm] [W] [g] [pcs] 200 Extra discharge resistors 1K8 10W with auxiliary NC contacts (capacitor empty in less then 5s) Integrated discharge resistors already included with capacitor for slow discharge (≤3min to 75V demand by IEC 60831 -...

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Three Phase Capacitors Capacitor working power depends on working voltage where: Ue - mains voltage; Un - capacitor rated voltage Qc - capacitor power at rated voltage Qf - capacitor actual power

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Three-phase capacitor power with detuning reactor in series Example: 3 x331.5pFat 400V/50Hzat p = 7% 0.0003315 • 3 • 400 2 • 314.16 / 1 - 0.07 = 53.8 kVAr The resonant frequency (fr) and filtering Phase current of capacitor: factor (p) in systems with compensation filters: (l=V^3 0^ = 1 Example: 25 kVAr at 400V Example: for p = 0.07 at 50 Hz; fr = 189 Hz 25000 / (400 • 1.73) = 36 A The calculation of the power factor cos <p: S v 1 + tin y ___ Fuse selection (gG): In=1,6*I For Umain=400V, Un=min. 690V V = Rated voltage (V) I = Rated current (A) fn = Line frequency (Hz) fr =...

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