Film Capacitors – Power Factor Correction
PFC DeltaCap X Black premium capacitors
Series/Type: MKD440-D-25.0-X
Ordering code: B32305A4252B040
Date: 02-12-2018
Version: 1
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Identification/Classification 1
(header 1 + top left bar):
Film Capacitors – Power Factor Correction
Identification/Classification 2
(header 2 + bottom left header bar):
PFC DeltaCap X Black premium capacitors
Ordering code: (top right header bar)
B32305A4252B040
Series/Type: (bottom right header bar)
MKD440-D-25.0-X
Preliminary data (optional):
Preliminary data
Department:
FILM PFC PM
Date:
02-12-2018
Version:
1
Released by PD:
Released by QA:
Prepared by:
Film Capacitors – Power Factor Correction B32305A4252B040
PFC DeltaCap X Black premium capacitors MKD440-D-25.0-X
Preliminary data
FILM PFC PM 02-12-2018
Please read Cautions and warnings and Page 2 of 12
Important notes at the end of this document.
Construction
Dielectric: Polypropylene film
Non-PCB, biodegradable soft resin
Stacked winding
Extruded round black painted aluminum can with stud
Provided with integrated discharge resistors
Features
Three-phase, internal delta connection
Double safety system:
- overpressure disconnector,
- self-healing technology
Naturally air cooled (or forced air cooling)
Indoor mounting
Typical applications
For Power Factor Correction
Terminals
Screw clamps terminals M6
Max torque: 3.5 Nm
Mounting
Threaded stud at bottom of can
(max. torque for M12 = 10 Nm)
Technical data and specifications
Characteristics
Rated capacitance C
R
3 • 137 µF
Tolerance –5 / +5%
Connection
D (Delta)
Rated voltage V
R
440 V AC
Rated frequency f
R
50 Hz 60 Hz
Output
25 kvar
30 kvar
Rated current I
R
32.8 A
39.4 A
Film Capacitors – Power Factor Correction B32305A4252B040
PFC DeltaCap X Black premium capacitors MKD440-D-25.0-X
Preliminary data
FILM PFC PM 02-12-2018
Please read Cautions and warnings and Page 3 of 12
Important notes at the end of this document.
Maximum ratings
V
max
V
R
+ 10 % (up to 8 h daily) / V
R
+ 15 % (up to 30 min daily) /
V
R
+ 20 % (up to 5 min daily) / V
R
+ 30 % (up to 1 min daily)
I
max
Up to 1.5 • I
R
(A) (including combined effects of harmonics, over
voltages and capacitance tolerance)
I
S
Up to 500 • I
R
(A) Detail refer to capacitor operation condition below
Capacitor operation condition
I
s
Switching operation/ year Total switching operation of
capacitor
500 I
R
1000
35 000
400 I
R
6200
211 000
300 I
R
62 000
2 100 000
Power dissipation (without discharge
resistors)
≤ 0.2 W/kvar (dielectric) and ≤ 0.5 W/kvar (total)
Test data
V
TT
2.15 • V
R
, 2 s
With tolerance ±50 V AC
V
TC
3000 V AC , 10 s
*tan δ (50 Hz at rate voltage)
≤ 0.5 • 10
-3
*tan δ at 1KHZ
≤ 7.0 • 10
-3
* Without discharge resistor
Climatic category –40/D
T
min
–40 ºC
T
max
+65 ºC
T
max Hotspot
+85 ºC
Storage temperature -40 °C … +85 °C
Humidity Av. rel. < 95%
Maximum altitude 4000 m Detail refer to derating chart
Mean life expectancy
Up to 300 000 hours at temperature class -40/55
(1)
Up to 200 000
hours at temperature class -40/60
(1)
Up to 100 000 hours at temperature class
-40/65
(1)
Film Capacitors – Power Factor Correction B32305A4252B040
PFC DeltaCap X Black premium capacitors MKD440-D-25.0-X
Preliminary data
FILM PFC PM 02-12-2018
Please read Cautions and warnings and Page 4 of 12
Important notes at the end of this document.
Temperature
class
(1)
Ambient temperature
Maximum
Highest mean over any period of
24h
1 year
-40/55
55 ⁰C
45 ⁰C
35 ⁰C
-40/60
60 ⁰C
50 ⁰C
40 ⁰C
-40/65
65 ⁰C
55 ⁰C
45 ⁰C
Terminals
Protection degree IP20
Terminal cross section 35 mm
2
Maximum terminal current 100 A
Creepage distance (min) 19.1 mm
Clearance distance (min) 19.1 mm
Safety
Mechanical safety
Overpressure disconnector
Max. short circuit current
(AFC: 10 kA according UL 810 standard) UL file E489229
Discharge resistor time
≤ 60 s to 75 V or less
Reference standards
IEC 60831–1/2(2014) and UL 810 5
th
edition
Design data
Dimensions (d × h)
136×245 mm
Weight approx
4.2 kg
Impregnation
Non PCB, resin filling: soft polyurethane resin
Fixing
Threaded bolt M12
Max. torque (Al can stud)
10 Nm
Mounting position
Preferably in vertical position, horizontal position possible.
See “Maintenance and Installation Manual” for further details.
Film Capacitors – Power Factor Correction B32305A4252B040
PFC DeltaCap X Black premium capacitors MKD440-D-25.0-X
Preliminary data
FILM PFC PM 02-12-2018
Please read Cautions and warnings and Page 5 of 12
Important notes at the end of this document.
Current derating curve
Label design
Current derating according maximum altitudes
Ambient temperature (°C)
Film Capacitors – Power Factor Correction B32305A4252B040
PFC DeltaCap X Black premium capacitors MKD440-D-25.0-X
Preliminary data
FILM PFC PM 02-12-2018
Please read Cautions and warnings and Page 6 of 12
Important notes at the end of this document.
Dimensional drawings B32305A series
Specification table
Type
50 Hz
60 Hz
C
R
D × H
Weight
Ordering code
Packing
unit
pcs
Output
kvar
I
R
A
Output
kvar
I
R
A µF mm kg
Rated voltage 440 V AC, 50/60 Hz, delta connection
MKD440-D-25.0-X
25.0
32.8
30
39.4
3 • 137
136 x 245
4.2
B32305A4252B040
4
Film Capacitors – Power Factor Correction B32305A4252B040
PFC DeltaCap X Black premium capacitors MKD440-D-25.0-X
Preliminary data
FILM PFC PM 02-12-2018
Please read Cautions and warnings and Page 7 of 12
Important notes at the end of this document.
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. DeltaCap capacitors are delivered with
discharge resistor included; alternatively discharge reactors are available from TDK. 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.
Film Capacitors – Power Factor Correction B32305A4252B040
PFC DeltaCap X Black premium capacitors MKD440-D-25.0-X
Preliminary data
FILM PFC PM 02-12-2018
Please read Cautions and warnings and Page 8 of 12
Important notes at the end of this document.
Overpressure disconnector
To ensure full functionality of an overpressure disconnector, the following must be observed:
1. The elastic elements must not be hindered, i.e.
Connecting lines must be flexible leads (cables).
There must be sufficient space (min. 12 mm) for expansion above the connections. This will
enable a longitudinal extension of the can to secure the overpressure disconnector work.
Folding beads must not be retained by clamps.
2. The maximum allowed fault current of 10000 A in accordance with UL 810 standard must be
assured by the application.
3. Stress parameters of the capacitor must be within the IEC60831 specification.
Overcurrent and short circuit protection
Use HRC fuses or MCCBs for short circuit protection. Short circuit protection and connecting
cables should be selected so that 1.5 times the rated capacitor current can be permanently
handled.
HRC fuses do not protect a capacitor against overload – they are only for short circuit protection.
The HRC fuse rating should be 1.6 to 1.8 times rated capacitor current.
Do not use HRC fuses to switch capacitors (risk of arcing).
Use thermal magnetic over current relays for overload protection.
Resonance cases
Resonance cases must be avoided by appropriate application design in any case. Maximum total
RMS capacitor current (incl. fundamental harmonic current) specified in technical data must not be
exceeded.
Re-switching vs. phase-opposition
In case of voltage interruption, a sufficient discharge time has to be ensured to avoid phase-
opposition and resulting high inrush currents
.
Vibration resistance
The resistance to vibration of capacitors corresponds to IEC 68, part 2–6.
Max. test conditions:
Test duration
6 h*
Frequency range 1
10 ... 55 Hz*
Displacement amplitude
0.75 mm*
*corresponding to max. 98.1 m/s or 10 g
Film Capacitors – Power Factor Correction B32305A4252B040
PFC DeltaCap X Black premium capacitors MKD440-D-25.0-X
Preliminary data
FILM PFC PM 02-12-2018
Please read Cautions and warnings and Page 9 of 12
Important notes at the end of this document.
These figures apply to the capacitor alone. Because the fixing and the terminals may influence the
vibration properties, it is necessary to check stability when a capacitor is built in and exposed to
vibration. Irrespective of this, you are advised not to locate capacitors where vibration amplitude
reaches the maximum in strongly vibrating equipment.
Mechanical protection
The capacitor has to be installed in a way that mechanical damages and dents in the aluminium can
are avoided.
Grounding
The threaded bottom stud of the capacitor has to be used for grounding. In case grounding is done
via metal chassis that the capacitor is mounted to, the layer of varnish beneath the washer and nut
should be removed. The maximum tightening torque is 12 Nm.
Maintenance
Check tightness of the connections/terminals periodically.
Take current reading twice a year and compare with nominal current. Use a harmonic analyser or
true effective RMS-meter.
In case of current above the nominal current check your application for modifications.
If a significant increase in the amount of non-linear loads has been detected, then a consultant
has to be called in for a harmonic study.
In case of the presence of harmonics installation of a de-tuned capacitor bank (reactors) must be
considered.
Check the discharge resistors/reactors and in case of doubt, check their function:
(1) Power the capacitor up and down.
(2) After ≤ 60 seconds the voltage between the terminals must decline to less than 75 V.
Check the temperature of capacitors directly after operation for a longer period, but make sure
that the capacitors have been switched off. In case of excessive temperature of individual
capacitors, it is recommended to replace these capacitors, as this should be an indication for loss
factor increase, which is a sign for reaching end of life.
Storage and operating conditions
Do not use or store capacitors in corrosive atmosphere, especially where chloride gas, sulfide gas,
acid, alkali, salt or the like are present. In dusty environments regular maintenance and cleaning
especially of the terminals is required to avoid conductive path between phases and/or phases
and ground.
Note
For detailed information about PFC capacitors and cautions, refer to the latest version of the PFC
Product Profile.
Film Capacitors – Power Factor Correction B32305A4252B040
PFC DeltaCap X Black premium capacitors MKD440-D-25.0-X
Preliminary data
FILM PFC PM 02-12-2018
Please read Cautions and warnings and Page 10 of 12
Important notes at the end of this document.
Display of ordering codes for TDK Electronics products
The ordering code for one and the same product can be represented differently in data sheets, data books,
other publications, on the company website, or in order-related documents such as shipping notes, order
confirmations and product labels. The varying representations of the ordering codes are due to
different processes employed and do not affect the specifications of the respective products.
Detailed information can be found on the Internet under www.tdk-electronics.tdk.com/orderingcodes.
Important notes
Page 11 of 12
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical
requirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application. As a
rule we are either unfamiliar with individual customer applications or less familiar with them than
the customers themselves. For these reasons, it is always ultimately incumbent on the customer
to check and decide whether a product with the properties described in the product specification is
suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or failure before
the end of their usual service life cannot be completely ruled out in the current state of the art,
even if they are operated as specified. In customer applications requiring a very high level of
operational safety and especially in customer applications in which the malfunction or failure of an
electronic component could endanger human life or health (e.g. in accident prevention or life-
saving systems), it must therefore be ensured by means of suitable design of the customer
application or other action taken by the customer (e.g. installation of protective circuitry or
redundancy) that no injury or damage is sustained by third parties in the event of malfunction or
failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g. because
they are classed as hazardous). Useful information on this will be found in our Material Data
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The aforementioned does not apply in the case of individual agreements deviating from the
foregoing for customer-specific products.
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Conditions of Supply.
7. Our manufacturing sites serving the automotive business apply the IATF 16949 standard.
The IATF certifications confirm our compliance with requirements regarding the quality
management system in the automotive industry. Referring to customer requirements and
customer specific requirements (“CSR”) TDK always has and will continue to have the policy of
respecting individual agreements. Even if IATF 16949 may appear to support the acceptance of
unilateral requirements, we hereby like to emphasize that only requirements mutually agreed
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individually agreed upon.
Important notes
Page 12 of 12
8. The trade names EPCOS, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CTVS,
DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD, MKK,
MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine, PQvar,
SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, ThermoFuse,
WindCap are trademarks registered or pending in Europe and in other countries. Further
information will be found on the Internet at www.tdk-electronics.tdk.com/trademarks.
Release 2018-10
