Film capacitors – Power Factor Correction
PhaseCap capacitors
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MKK765-D-30-11
B25668A7167J375
June 2009
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FK PC PM PFC
June 2009
2
Film capacitors – Power Factor Correction
PhaseCap capacitors
B25668A7167J375
MKK765-D-30-11
EPCOS AG 2009. Reproduction, publication and dissemination of this publication, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited
Film capacitors – Power Factor Correction
PhaseCap capacitors
B25668A7167J375
MKK765-D-30-11
Construction
Dielectric: Polypropylene film
Gas impregnated/dry type
Concentric winding
Wave cut
Extruded round aluminium can with stud
Triple safety system
Features
Three phase, delta connected
Self-healing technology
Naturally air cooled (or forced air cooling)
Indoor mounting
Typical applications
Power Factor Correction
Industrial applications with distorted electrical
networks
Wind turbine applications
Harmonic filtering
For 690/800 V grids
Terminals
SIGUT terminals
Mounting
Threaded stud at bottom of can
(max. torque = 10 Nm for M12)
Technical data and specifications
Characteristics
Rated capacitance C
R
Tolerance
Connection
Rated voltage V
R
Rated frequency f
R
Output
Rated current I
R
tan
δ
(dielectric)
MKK765-D-30-11
3 × 55 µF
–5/+10%
D (Delta)
765 V AC
50 Hz
30 kvar
23 A
0.2 W/kvar
60 Hz
36 kvar
27 A
FK PC PM PFC
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 8
June 2009
Film capacitors – Power Factor Correction
PhaseCap capacitors
B25668A7167J375
MKK765-D-30-11
Maximum ratings
V
max
(up to 8 h daily)
V
max
(up to 1 min)
I
max
I
S
840 V AC
995 V AC
1.3 × I
R
(A)
300 × I
R
(A)
Test data
V
TT
V
TC
tan
δ
(50 Hz)*
*without discharge resistors
1650 V AC/50 Hz during 10 s
6000 V AC/50 Hz during 10 s
≤
0.35 W/kvar (total)
Climatic category/–40 °C
T
min
T
max
Humidity H
rel
Maximum altitude
–40 ºC
+55 ºC
Av. < 95%
4000 m
Mean life expectancy
t
LD
Up to 130 000 hours
Max. 5000 switchings per year according to IEC 60831–1/2
Design data
Dimensions (d × h)
Weight approx
Impregnation
Fixing
Max. torque (Al can stud)
Mounting position
136 × 200 mm
2.4 kg
Dry, inert gas
Threaded bolt M12
10 Nm
Any mounting position possible. See
“Installation and Maintenance Manual” for
further details.
Terminals
Degree of protection
Max. torque
Terminal cross section
Maximum terminal current
Creepage distance
Clearance
Isolated terminals, IP20
1.2 Nm
16 mm
2
(5 AWG)
50 A
12.7 mm
9.6 mm
FK PC PM PFC
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 8
June 2009
Film capacitors – Power Factor Correction
PhaseCap capacitors
B25668A7167J375
MKK765-D-30-11
Safety
Mechanical safety
Max. short circuit current
Discharge resistor time
Overpressure disconnector
AFC: 10 kA
≤
1 min (75 V)
Reference standards
IEC 60831-1/2, UL 810 (5th edition)
FK PC PM PFC
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 8
June 2009
Film capacitors – Power Factor Correction
PhaseCap capacitors
B25668A7167J375
MKK765-D-30-11
Cautions and warnings
In case of dents of more than 1 mm depth or any other mechanical damage, capacitors must not
be used at all.
This applies also in cases of oil leakages.
To ensure the full functionality of the overpressure disconnector, elastic elements must not be
hindered and a minimum space of 12 mm has to be kept above each capacitor.
Do not handle the capacitor before it is discharged.
Resonance cases must be avoided by appropriate application design in any case.
Handle capacitors carefully, because they may still be charged even after disconnection due to
faulty discharging devices.
Protect the capacitor properly against over current and short circuit.
Failure to follow cautions may result, worst case, in premature failures, bursting and fire.
Discharging
Capacitors must be discharged to a maximum of 10% of rated voltage before they are switched in
again. This prevents an electric impulse discharge in the application, influences the capacitor’s
service life and protects against electric shock. The capacitor must be discharged to 75 V or less
within 3 minutes. There must be not any switch, fuse or any other disconnecting device in the circuit
between the power capacitor and the discharging device. PhaseCap-capacitors have a pre-mounted
ceramic discharge module; alternatively discharge reactors are available from EPCOS. Discharge and
short circuit capacitor before handling!
Service life expectancy
Electrical components do not have an unlimited service life expectancy; this applies to self-healing
capacitors too. The maximum service life expectancy may vary depending on the application the
capacitor is used in.
Safety
Electrical or mechanical misapplication of capacitors may be hazardous. Personal injury or property
damage may result from bursting of the capacitor or from expulsion of oil or melted material due to
mechanical disruption of the capacitor.
Ensure good, effective grounding for capacitor enclosures.
Provide means of disconnecting and insulating a faulty component/bank.
The terminals of capacitors, connected bus bars and cables as well as other devices may also be
energized.
Follow good engineering practice.
Thermal load/over-temperature
After installation of the capacitor it is necessary to verify that maximum hot-spot temperature is not
exceeded at extreme service conditions.
FK PC PM PFC
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 8
June 2009
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