Document
FPX RANGE Capacitor for Power Electronics
Preliminary data sheet
www.DataSheet4U.com
Preliminary data
FPX
Applications Protection of thyristors . Protection of gate turn off thyristor (GTO) . Clamping (Secondary snubber) .
www.DataSheet4U.com
Technology Metallized polypropylene dielectric capacitor with controlled self healing . Reinforced metallisation developed for high impulse currents . Axial connections specially developed to reduce serial inductance and to provide rigid mechanical mounting .
Presentation Cylindrical in plastic or epoxy case filled with thermosetting resin . Outputs : threaded inserts M6 or M8 .
Electrical characteristics Climatic category : 40/085/56 (IEC 68) . Working Temperature : – 40 to + 85°C . Hot spot temperature 85°C (must be calculated : see page up) . Capacitance range : C = 0.5 µF to 6 µF . Tolerance : ± 5 % . Nominal dc voltage : Undc = 1000 to 3000 V . Peak voltage : Ucr = 1600 to 4000 V . Allowable overvoltage : Us = 2000 to 4600 V 10 s per day . RMS current : Irms max = 15 to 160 A . Impulse current : I2t max = up to 729 A2s . Spikes or peak currents in the capacitors may cause a deterioration of the bonding between the metallisation and connections . These bonds are capable of withstanding only a limited amount of energy for each spike . The table shows the maximum energy permitted in the form (I2.t), where I is in amps, and t is in seconds . The formula (I2.t) replaces dV/dt which is less easy to use as it is not an expression of energy (I = C.dV/dt) . This type of capacitor has been designed to withstand high (I2.t) values .
2
Preliminary data
FPX
Stray inductance : 5 to 20 nH . Variation of capacitance with temperature : ³C C ± 2 % between – 40 and 85°C .
Test voltage between terminals : Us x 10 s 25°C . Withstanding voltage www.DataSheet4U.com between terminals and case : > 4000 Vrms 60 s 50 Hz .
Standards IEC 1071-1, IEC 1071-2 : Power electronic capacitors . IEC 68 -1 : Environmental testing . UL 94 : Fire requirements .
Hot spot temperature calculation Hot spot = θ connection + ( Pd + Pc ) x Rth . with Pd (Dielectric losses) = Q x Tgδ0 [ 1/2 x C x (Upeak to peak)2 x Fr ] x (2 10–4). Pc (Joule losses) = Rs x I2rms . - C in Farad . - U in Volts . - Rs in
NOTE Due to the design of the capacitor and its technology, the thermal impedance between the terminations and the core of the capacitor is low, it is necessary to take care that the capacitor is never overheated by use of wrongly-sized connections. In the case where the series diode are screwed to the capacitor, cooling of the diode must be taken into account. Do not use the capacitor as a heat sink. Due to the complexity of the diode /capacitor thermal exchanges, we recommand that thermal measurements shall be made on the different components. We would be pleased to advice you on specific problems.
3
Preliminary data
FPX
Applications note
GTO protection
www.DataSheet4U.com
Choice of voltage : U1 Upeak U2 Undc
Nominal dc voltage (Undc) and peak voltage (Upeak) are given in the tables.
4
Preliminary data
FPX
Applications note
THYRISTOR protection
www.DataSheet4U.com
Choice of voltage : U1 Upeak note that U1 is the voltage peak to peak and can be not symmetrical versus 0 V
Peak voltage is given in the tables.
5
Preliminary data
FPX
Applications note
CLAMPING
www.DataSheet4U.com
Choice of voltage : U1 Upeak U2 Undc
The nominal voltage (Undc) and peak voltage (Upeak) are given in the tables.
6
Preliminary data
NOTE
www.DataSheet4U.com
7
Preliminary data
FPX
www.DataSheet4U.com
Dimensions in mm 8
Preliminary data
FPX
H 79 mm
www.DataSheet4U.com
Dimensions in mm 9
Preliminary data
FPX
FPX 2000V
Cn (µF) 1
Undc : 1000 V
H ± 0.5 52 52 52 52 52 52 h ±2 5 5 5 5 5 5
Upeak : 1600 V
D max 40 60 72 72 82 82 d ± 0.1 18 22 22 22 22 22
Urms : 560 V
(I2.t) max (A2.s) 2 8 18 25 32 50 Irms max (A) 15 30 45 50 60 70 Rs
Us : 2000 V
Rth Références (mOhm) 2.4 1.2 0.9 0.85 0.75 0.65 (°C/W) 14 6.1 4.5 4.5 3.5 2.5 FPX66N0105J-FPX86N0205J-FPX86N0305J-FPX86N0355J-FPX86N0405J-FPX86N0505J--
Dimensions (mm) Case type
Plastic case M6/6 2 Plastic case www.DataSheet4U.com M8/8 3 Plastic case M8/8 3.5 Plastic case M8/8 4 Plastic case M8/8 5 Plastic case M8/8
FPX 2500V
Cn (µF) 0.5 1 1.5 2 2.5 3 3.5
Undc : 1300 V
H ± 0.5 52 52 52 52 52 52 52 h ±2 5 5 5 5 5 5 5
Upeak : 2000 V
D max 40 60 60 72 72 82 82 d ± 0.1 18 22 22 22 22 22 22
Urms : 700 V
(I2.t) max (A2.s) 1 3 7 12.7 20 28 39 Irms max (A) 15 20 30 40 60 60 65 Rs
Us : 2500 V
Rth Références (mOhm) 3 2.3 1.5 1.1 0.89 0.85 0.78 (°C/W) 14 10.5 6.1 4.5 3.7 3.2 2.9 FPX66P0504J-FPX86P0105J-FPX86P0155J-FPX86P0205J-FPX86P0255J-FPX86P0305J-FPX86P0355J--
Dimensions (mm) Case type Plastic case M6/6 Plastic case M8/8 Plastic case M8/8 Plastic case M8/8 Plastic case M8/8 Plastic case M8/8 Plastic case M8/8
FPX 3500V
Cn (µF) 2 3 3.5 4
Undc : 2000 V
H ± 0.5 62 62 62 62 h ±2 5 5 5 5
Upeak : 2400 V
D max 72 92 92 92 d ± 0.1 22 22 22 22
Urms : 8.