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Electrical characteristics of medium voltage capacitors (continued) "ALL-FILM" MEDIUM VOLTAGE CAPACITORS (CONTINUED) MEDIUM VOLTAGE RANGE Variation of the W/kVAr losses as a function of the operating time Permissible overloads - Current: 1.3 I nominal continuously - Voltage (between terminals): Standard insulation levels (phases/earth) for individual capacitors - Highest voltage for equipment Um (rms) (kV) 2.4 3.6 7.2 12 17.5 24 - Test voltage at industrial frequency (duration: 10 seconds) (kV) 8 10 20 28 38 50 - Lightning impulse withstand voltage (peak value) (kV) 35 40 60 75 95 125 Individual tests - Measurement of capacitance and losses - Voltage test between terminals, i.e.: - Voltage test between joined terminals and earth at industrial frequency - Test of discharge device and seal-tightness of the case. 54
CAPACITORS FOR INDUCTION FURNACES Legrand offers a range of special capacitors for the compensation and balancing of induction furnaces. These capacitors are custom designed according to the requirements and characteristics of the installation. Capacitors complying with standard IEC 60110 "All-film" dielectric Biodegradable impregnating agent With or without internal discharge resistor Possible internal protection devices: - Internal fuses - Pressure monitoring device - Thermostat Frequency range: 50 Hz to 200 kHz Voltage range: 50 V to 3000 V Air or water cooled according to frequency Multiple outputs possible MEDIUM VOLTAGE RANGE Water-cooled capacitor for medium frequency induction furnaces Please consult us for a costed design 55
Page 1 and 2:
A Group brand REACTIVE ENERGY COMPE
Page 3 and 4:
MEDIUM VOLTAGE RANGE Medium voltage
Page 5 and 6: ALPTEC 2333 Carry out a diagnosis o
Page 7 and 8: LONG-TERM ENERGY SAVINGS (CONTINUED
Page 9 and 10: POWER FACTOR By definition, the pow
Page 11 and 12: HOW TO IMPROVE THE POWER FACTOR By
Page 13 and 14: BASED ON MEASUREMENTS TAKEN ON THE
Page 15 and 16: REACTIVE COMPENSATION OF ASYNCHRONO
Page 17 and 18: Installing capacitor banks INSTALLA
Page 19 and 20: Harmonics INTRODUCTION In recent ye
Page 21 and 22: PROTECTING CAPACITORS USING DETUNED
Page 23 and 24: GENERAL INFORMATION (See p. 22-23)
Page 25 and 26: PROTECTING CAPACITORS FROM HARMONIC
Page 27 and 28: ALPIVAR 2 : CONNECTION AND PROTECTI
Page 29 and 30: Alpivar 2 capacitors Technical spe
Page 31 and 32: Alpibloc fixed capacitor banks Dim
Page 33 and 34: Alpimatic racks 400 V network Alpim
Page 35 and 36: Alpimatic automatic capacitor banks
Page 37 and 38: Alpimatic automatic capacitor banks
Page 39 and 40: Alpistatic automatic capacitor bank
Page 41 and 42: Alpistatic racks (continued) 400 V
Page 43 and 44: Alpistatic automatic capacitor bank
Page 45 and 46: Alptec power factor controllers Alp
Page 47 and 48: detuned reactors - product range (s
Page 49 and 50: protective circuit breakers and con
Page 51 and 52: network analysers Alptec 2444, Alpt
Page 53 and 54: MEDIUM VOLTAGE CAPACITORS (See p. 5
Page 55: "ALL-FILM" MV CAPACITORS (CONTINUED
Page 59 and 60: PROTECTION DEVICES FOR "ALL-FILM" M
Page 61 and 62: DIMENSIONS AND WEIGHTS OF "ALL-FILM
Page 63 and 64: WIRING CAPACITOR BANKS Wiring MV ca
Page 65 and 66: ADDITIONAL ACCESSORIES (CONTINUED)
Page 67 and 68: INSTALLATION EXAMPLES Fixed type -
Page 69 and 70: Fixed type - Double star configurat
Page 71 and 72: NOTES .............................
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