MVAC250-12F - power, Murata

MVAC250 Series
www.murata-ps.com
250W 3" x 5" High Density AC-DC Power Supply Converter
ORDERING GUIDE
Main Output Fan Output Aux Output
(V1)
(V2)
(V3)
MVAC250-12F
12V
12V
MVAC250-24F
24V
12V
MVAC250-48F
50V
12V
MVAC250-12AF
12V
12V
5V
170W
250W @ 250LFM
MVAC250-12AFD*
12V
12V
5V
MVAC250-24AFD*
24V
12V
5V
MVAC250-48AFD*
50V
12V
5V
MVAC250-24AFT#
24V
12V
5V
MVAC-COVER
Optional cover kit assembly; see MVAC-COVER datasheet for details
* Refer to page 2 for current sharing model number MVAC250-xxAFD notes.
#
CCC Certiﬁcation is not available for these models.
Model Number
FEATURES

IEC60601 Ed.3 medical (2 x MOPP Pri-Sec)
EN60950 ITE safety approved

250W compact high density
Natural Convection Cooling
INPUT CHARACTERISTICS

3" x 5" standard footprint
Parameter

High efﬁciency up to 94%
Input Voltage Operating Range

Remote sense
Input Frequency
Turn-on Input Voltage
Turn-off Input Voltage
Input Current
No Load Input Power (MVAC250-xxAFD)7
Inrush Current
Power Factor

Remote On/Off, Power OK (MVAC250-xxAFx)

Universal AC input with active PFC

Less than 1U high – 1.4"

Convection cooled operation up to 170W
Forced Air Cooling
Conditions
Single phase
DC
Input rising
Input falling
90Vac input, full load all outputs
(PS_ON = OFF, 5V_Aux = 0A)
At 264Vac, at 25°C cold start
At 230Vac, full load
Min.
90
127
47
80
70
Typ.
115/230
50/60
1.5
Max.
264
300
63
90
80
3.4
2.0
15
0.96
Units
Vac
Vdc
Hz
Vac
A
W
Apk

Isolated 12V@1A fan output

Isolated 5V@2A standby/auxiliary output with
models MVAC250-xxAFx

RoHS compliant

Active inrush protection

Current sharing option
DESCRIPTION
The MVAC250 series switching power supplies
utilize advanced component and circuit
technologies to deliver high efﬁciency. Designed
for medical, computing, communications, telecom
and other OEM applications to satisfy 1U height
design considerations, the MVAC250 Series
measures only 3.0" x 5.0" x 1.40". All models
offer universal AC input with active power factor
correction (PFC) and compliance to worldwide
safety and EMC standards.
www.murata-ps.com/en/3d/acdc.html
www.murata-ps.com/en/3d/acdc.html
www.murata-ps.com/en/3d/acdc.html
www.murata-ps.com/en/3d/acdc.html
www.murata-ps.com/en/3d/acdc.html
www.murata-ps.com/en/3d/acdc.html
OUTPUT CHARACTERISTICS
Model Number
MVAC250-12F
MVAC250-24F
MVAC250-24AFT
MVAC250-48F
MVAC250-12AF
MVAC250-12AFD
MVAC250-24AFD
MVAC250-48AFD
Main Output
Voltage (V1)
12V
0.4 to 20.8A
Maximum Load
Capacitance
0 to 1500μF
24V
0.2 to 10.4A
0 to 300μF
± 1%
93%
50V
12V
12V @ 10.4A6
24V @ 5.2A6
50V @ 2.5A6
0.1 to 5.0A
0 to 20.8A
0 to 20.8A
0 to 10.4A
0 to 5.0A
0 to 82μF
0 to 1500uF
0 to 1500μF
0 to 300μF
0 to 68μF
± 1%
± 1%
± 1.5%6
± 1.5%6
+3.0% / –1.5%6
94%
93%
93%
93%
94%
Load Current
Line, Load, Cross
Regulation
± 1%
Typical Efﬁciency
@230Vac
93%
Main Output Characteristics (all models)
Parameter
Conditions
Transient Response9
50% load step, 1A/μsec slew rate
Settling Time to 1% of Nominal
Turn On Delay
After application of input power
Output Voltage Rise
Monotonic5
Output Holdup
120Vac/60Hz, full load
Temperature Coefﬁcient
Ripple Voltage & Noise1
Compensates for up to 0.5V of lead drop with
Remote Sense
remote sense connected. Protected against
short circuit and reverse connection.
Typ.
Max.
±5
500
3
50
20
Units
%
μsec
sec
msec
0.02
1
%/°C
%
500
mV
Auxiliary Output Characteristics (varies by model)
Auxiliary Output
Fan (V2) all models
Aux (V3) – MVAC250-xxAFx
Aux Output
Load Current
Voltage8
12V
0 to 1A
0 to 2A
5V
Load Capacitance
0 to 220μF
0 to 220μF
Line, Load, Cross Ripple Voltage &
Regulation3
Noise1
± 10%
2%
± 5%
1%
Available now at
www.murata-ps.com/en/3d/acdc.html
For full details go to
www.murata-ps.com/rohs
CB
Test Certificate
and Test Report
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MVAC250.B02 Page 1 of 9
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
ENVIRONMENTAL CHARACTERISTICS
Parameter
Storage Temperature Range
Conditions
See power rating curves
Start up
Non-condensing
Operating Temperature Range
Operating Humidity
Operating Altitude
MTBF
Min.
Typ.
-40
-10
-20
10
-200
474K
Complies
Complies
Complies to levels of IEC721-3-2
Max.
85
70
Units
95
5000
%
m
Hours
°C
Telcordia SR-332 M1C3 @25°C
Operating, MIL-HBK-810E
Non-operating, MIL-HBK-810E
IEC-68-2-27 standard
IEC60601-1 (Ed. 3) – CB Cert & Report
ANSI/AAMI ES60601-1 (2005+ C1:2005+A2:10)
CAN/CSA 22.2 No. 60601-1 (2008) 3rd Edition
EN60601-1:2006+CORR:2010
UL60950-1:, 2nd Edition, 2011-12-19
CSA22.2 No..60950-1-07, 2nd Edition, 2001-12.
EN60950-1:2006+A11:2009/A1/2010/A12:2011
IEC 60950 (ed.2), IEC60950 (ed.2);am1
CE Marking per LVD
2 years
3.0" x 5.0" x 1.4" (76.2mm x 127mm x 35.6mm)
MVAC250-xxF: 0.73 lbs (332.9g); MVAC250-xxAFD: 0.76 lbs (344.7g); MVAC250-xxAFT 0.78 lbs (352.7g)
Shock
Operational Vibration
Safety – Medical Standards
2 x MOPP (Primary-Secondary)
Safety – ITE Standards
Warranty
Outside Dimensions
Weight
RESIDUAL RISK (PER ISO 14971 & IEC60601-1) FOR USER CONSIDERATION
Fault Condition
Complies
Residual Risk
Contact your Murata salesperson for details
PROTECTION CHARACTERISTICS
Parameter
Over Voltage Protection4
Over Current Protection4
Over Temperature Protection
Remote Sense Short Circuit Protection
Remote Sense Reverse Connection Protection
Conditions
V1 (main output) latching
V3 (aux output: MVAC250-xxAFx) latching
V1, hiccup mode
Auto-recovery
Min.
110
5.5
110
Typ.
Max.
125
7.5
130
Units
%
V
%Amax
Max.
Units
Complies
Complies
Complies
ISOLATION CHARACTERISTICS
Parameter
Isolation
Earth Leakage Current (under single fault condition):
264Vac, 60Hz, 25°C
Earth Leakage Current (under normal conditions):
264Vac, 60Hz, 25°C
Conditions
Primary to Chassis
Primary to Secondary (2xMOPP)
Secondary to Chassis
Output to Output
MVAC250-xxAFD
MVAC250-xxAF; -xxAFT
MVAC250-xxF
MVAC250-xxAFD
MVAC250-xxAF; -xxAFT
MVAC250-xxF
Min.
1500
4000
500
500
Typ.
Vac
300
300
350
150
150
250
μA
CURRENT SHARING OPTION – MVAC250-xxAFD ONLY
Model Number
MVAC250-12AFD
MVAC250-24AFD
MVAC250-48AFD
Description
Main Output: Current share is achieved using the droop method. Nominal output voltage is achieved at 50% load and output voltage increases/
drops at a rate of:
• 48mv per amp for 12V output
• 192mV per amp for 24V output
• 800mV per amp for 50V output.
Startup of parallel power supplies is not internally synchronized. If more than 250W combined power is needed, start-up synchronization must be
provided by using a common PS_ON signal. To account for ±10% full load current sharing accuracy and the reduction in full load output voltage
due to droop, available output power must be derated by 15% when units are operated in parallel. Current sharing can be achieved with or without
remote sense connected to the common load. If ORing protection is desired, please contact Murata sales for external ORing FET board or external
ORing FET reference circuit design.
Aux (V3) output can be tied together for redundancy but total combined output power must not exceed 10W, external ORing devices must be used.
Fan (V2) can be tied together for redundancy but total combined output power must not exceed 12W, external ORing diodes can be used.
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MVAC250.B02 Page 2 of 9
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
EMISSIONS AND IMMUNITY
Characteristic
Input Current Harmonics
Voltage Fluctuation and Flicker
Standard
IEC/EN 61000-3-2
IEC/EN 61000-3-3
EN 55022
FCC Part 15
IEC/EN 61000-4-2
IEC/EN 61000-4-3
IEC/EN 61000-4-4
IEC/EN 61000-4-5
IEC/EN 61000-4-6
IEC/EN 61000-4-8
IEC/EN 61000-4-11
Conducted Emissions
ESD Immunity
Radiated Field Immunity
Electrical Fast Transient Immunity
Surge Immunity
Radiated Field Conducted Immunity
Magnetic Field Immunity
Voltage dips, interruptions
Compliance
Class A
Complies
Class B
Class B
Level 4, Criterion 2
Level 3, Criterion A
Level 4, Criterion A
Level 3, Criterion A
Level 3, 10V/m, Criterion A
Level 3, Criterion A
Level 3, Criterion B
EMI CONSIDERATIONS
For optimum EMI performance, the power supply should be mounted to a metal plate grounded to all 4 mounting holes of the power supply. To comply with safety standards, this
plate must be properly grounded to protective earth (see mechanical dimension notes). Pre-compliance testing has shown the stand-alone power supply to comply with EN55022
Class A radiated emissions. Class B radiated emissions are achievable with a metal enclosure. Radiated emission results vary with system enclosure and cable routing paths.
SAFETY CONSIDERATIONS
1. This power supply is a component level power supply intended for use in Class I or Class II applications. Secondary ground traces need to be suitably isolated
from primary ground traces when used in Class II applications.
2. When the power supply is used in Class II equipment, all ground traces and components connected to the primary side are considered primary for spacing and
insulation considerations.
STATUS AND CONTROL SIGNALS – MVAC250-xxAFD ONLY
Parameter
PS_ON
PWR_OK
Models
Conditions
All models except This signal must be pulled low (sink current >2mA) to +5V_AUX_RTN to turn on the main and Fan (V2) output. The +5V_AUX output is independent
as noted below. of the PS_ON signal and comes up automatically when the input AC or input DC voltage is applied within their speciﬁed operating ranges.
This pin is pulled high internally and so all three outputs (main, Fan output and +5V_AUX) come up automatically when the input AC or input DC voltage
MVAC250-xxAFT
is applied within their speciﬁed operating ranges. Pulling this pin low (sink current >2mA) to +5V_AUX_RTN will disable the main and fan outputs.
Open collector logic goes high 50-200 msec after main output is in regulation; it goes low at least 6 msec before loss of regulation. Internal 10K pull
All models
up to +5V_AUX is provided. Applications using PWR_OK signal should maintain a minimum load of 5W on the main or fan output.
1. Noise and ripple is measured at an oscilloscope jack on the output, 20MHz bandwidth, and with
0.1μF ceramic and 10μF aluminum electrolytic capacitors across the output pins.
2. Unless otherwise speciﬁed all measurements are taken at 120Vac input and 25°C ambient
temperature.
3. Fan (V2) regulation band applies from 0.1A to 1A load with a minimum of 10W load on the main
(V1) output.
4. Fan (V2) has overvoltage protection (tracking V1) and short circuit protection. Overloading the Fan
(V2) output can result in permanent damage to the unit.
5. 24V and 50V models may exhibit up to 5% turn on overshoot for loads less than 4% of full load.
6. See current sharing option section for droop characteristics.
7. No load Input power varies by model and by input line. Measurement is difﬁcult to make due to burst
mode operation. Please contact Murata sales if additional information is required.
8. All three output returns are isolated from each other (see isolation characteristics section); the returns
may be tied together externally.
9. Load steps beginning from combined loads on the main and fan outputs of less than 5W may
result in transient undershoots outside of the spec limits.
PART NUMBER STRUCTURE
MV A x yyy - zz hhh
Murata Manufacturing Corp.
Form Factor Outline
A = 2x4", 3x5", or 4x7"
Outline Detail
B & D = 2x4"
C = 3x5"
F = 4x7"
Modification Code Options
A = Aux 5V Standby Voltage
F = Aux 12V Fan Output
D = Droop Current Share
T = Terminal Output Connector
R = Terminal Output Connector with Internal Or-ing Solution and Droop Current Share
Main Output Voltage (V)
(12, 24, 28, or 50)
Output Power (W)
(40, 65, 120, 160, 250, 400, or 750)
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MVAC250.B02 Page 3 of 9
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
PERFORMANCE DATA
MVAC250-24F Efﬁciency
95
95
93
93
91
90 Vin
89
115 Vin
230 Vin
87
Efﬁciency %
Efﬁciency %
MVAC250-12F Efﬁciency
91
90 Vin
89
115 Vin
85
85
83
83
81
230 Vin
87
81
0
10
20
30
40
50
60
70
80
90
100
0
10
Load %
20
30
40
50
60
70
80
90
100
Load %
Inrush Current
MVAC250-48F Efﬁciency
95
Efﬁciency %
93
91
90 Vin
89
115 Vin
230 Vin
87
85
83
81
0
10
20
30
40
50
60
70
80
90
100
Load %
Time: 100 msec/div, Ch1: 500 V/div, Ch4: 20 A/div, Vin: 264 VAC, Ipk = 15.1 A AC
applied at peak of sine wave
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MVAC250.B02 Page 4 of 9
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
THERMAL CONSIDERATIONS
System thermal management is critical to the performance and reliability of the MVAC series power supplies. Performance derating curves are provided
which can be used as a guideline for what can be achieved in a system conﬁguration with controlled airﬂow at various input voltage conditions.
The air ﬂow curves are generated using an AMCA 210-99 and ASHRAE 51-1999 compliant wind tunnel with heated inlet air and a controlled CFM
providing a duct test section having a calculated average LFM. A correlation between the test setup and the actual system environment is paramount to
understanding what can be achieved in an actual system. In a power supply of this density, cooling air moving both through the unit as well as around the
unit strongly inﬂuences local temperatures. The wind tunnel test setup was constructed to produce a ﬂow with a slight back pressure to induce both ﬂow
conditions by providing a small gap between the power supply and duct walls of 0.5" (13mm). The optimal and characterized airﬂow direction is from the
input connector to the output connector (see diagram below). The P-Q ﬂow curve for this test setup is also shown below.
P-Q CURVE, DUCTED FLOW
13mm [0.5in] all sides
0.0100
*
Ambient Temperature
Measurement
Static Pressure (in. w.g.)
Air Flow
Power Supply
0.0075
0.0050
0.0025
0.0000
Output Connector
Input Connector
64mm [2.5in]
0
2.5
5
7.5
10
12.5
15
17.5
20
22.5
AIRFLOW-(CFM @ 0.075 lbs/cu ft air density)
The natural convection data is obtained from a horizontally mounted power supply with un-obstructed ﬂow at room temperature. At elevated temperature
the power supply data is taken while it is surrounded by a large vented enclosure to minimize forced cross ﬂows inherent in the elevated temperature test
system.
Power RaƟng at 120Vac
Nat Conv
250LFM
10
20
30
40
50
60
Output Power (WaƩs)
Output Power (WaƩs)
Power RaƟng at 230Vac
275
250
225
200
175
150
125
100
75
50
275
250
225
200
175
150
125
100
75
50
70
Nat Conv
250LFM
10
Ambient Temperature (Degrees C)
20
275
250
225
200
175
150
125
100
75
50
Nat Conv
250LFM
20
30
40
50
60
Ambient Temperature (Degrees C)
40
50
60
70
Power RaƟng at 90Vac
70
Output Power (WaƩs)
Output Power (WaƩs)
Power RaƟng at 100Vac
10
30
Ambient Temperature (Degrees C)
275
250
225
200
175
150
125
100
75
50
Nat Conv
250LFM
10
20
30
40
50
60
70
Ambient Temperature (Degrees C)
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MVAC250.B02 Page 5 of 9
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
WIRING DIAGRAM FOR OUTPUT
Dotted lines show optional remote sense connections.
Optional remote sense lines can be attached to a load that is a distance
away from the power supply to improve regulation at the load.
+Remote Sense
+Remote Sense
J3 pin 5
J2 pins 1-6
MVAC250-xxAFx
+DC out
MVAC250-xxF
J3 pin 5
J2 pins 1-6
+DC out
Main Output Load
J2 pins 7-12
2K49
Main Output Load
J2 pins 7-12
DC out return
J3 pin 6
-Remote Sense
J3 pin 1
+5V_AUX
J3 pin 4
PS_ON
J3 pin 6
DC out return
-Remote Sense
10K0
10
100
CTR~100
+5V logic circuitry
+5V_AUX
>2mA
1N0
10K0
100
5
J3 pin 2
PWR_OK
6
2
74LVC2G07
J3 pin 8
J3 pin 7
FET, BJT, wire
or switch (debounced )
to turn on +DC out
and +12V_fan
+5V_AUX_RTN
+12V_Fan
J3 pin 7
+12V_Fan
Fan or
other load
J3 pin 3
Fan or
other load
+12V_FAN_RTN
J3 pin 3
+12V_FAN_RTN
APPLICATION NOTE
Document Number
Description
Link
ACAN-42 MVAC Series
External ORing FET Reference Circuit
www.murata-ps.com/data/apnotes/acan-42.pdf
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MVAC250.B02 Page 6 of 9
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
MECHANICAL DIMENSIONS – MVAC250-xxF ONLY

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B
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114.30 [4.500] 63.50 [2.500]
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115.57 [4.550] 64.77 [2.550]
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6
5
4
2
1
12
11
10
9
8
7
1-6
7-12
+DC_OUT
+DC_OUT_RTN
1
3
5
7
1
2
3
4
5
6
7
8
DO NOT USE
DO NOT USE
+12V_FAN_RTN
DO NOT USE
+REMOTE_SENSE
-REMOTE_SENSE
+12V_FAN
DO NOT USE
J3
07*
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6
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ALL DIMENSIONS ARE IN MM [IN].

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12
11
10
9
8
7
1-6
7-12
+DC_OUT
+DC_OUT_RTN
1
3
5
7
1
2
3
4
5
6
7
8
+5V_AUX
PWR_OK
+12V_FAN_RTN
PS_ON
+REMOTE_SENSE
-REMOTE_SENSE
+12V_FAN
+5V_AUX_RTN
J3
07*
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A
B
4.50 x 2.50
114.30 [4.500] 63.50 [ 2.500]
4.55 x 2.55
115.57 [4.550] 64.77 [ 2.550]
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2
4
6
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1
3
5
7

1
2
3
4
5
6
7
8
MVAC250-xxAFT
+5V_AUX
PWR_OK
+12V_FAN_RTN
PS_ON
+REMOTE_SENSE
-REMOTE_SENSE
+12V_FAN
+5V_AUX_RTN
$//',0(16,216$5(,100>,1@

SAFETY CONSIDERATION NOTES:
1.
Protective bonding conductor from the end product protective earthing terminal must be tied to TB1. For optimum EMI performance, while maintaining
Class I safety isolation all 4 mounting holes must be tied to the end product protective earthing terminal. To maintain Class II safety isolation mounting
holes MTG1 and MTG2 need to be isolated from protective earth and should use standoffs of non-conductive material.
2.
This power supply requires mounting standoffs of minimum 6mm in height. If there is risk of chassis deformation or shorter standoff height is required,
an appropriate insulator must be used under the power supply with adequate extension beyond the outline of the power supply. In all cases,the
applicable safety standards must be applied to ensure proper creepage and clearance requirements are met.
3.
The primary heatsink is considered a live primary circuit, and should not be touched. It is recommended that the primary heatsink be kept at least
3.5mm from chassis and 7mm from secondary circuits. In all cases, the applicable safety standards must be applied to ensure proper creepage and
clearance requirements are met.
4.
This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to:
http://www.murata-ps.com/requirements/
5.
Used only in non-tropical conditions
6.
Double pole/neutral fusing.
Dimensions: 3.0" x 5.0" x 1.4" (76.2mm x 127mm x 35.6mm)
INPUT/OUTPUT CONNECTOR AND SIGNAL SPECIFICATION AND MATING CONNECTORS – MVAC250-xxAFT
Connector
Input Connector J1:
Molex 26-62-4030
Output Connector J2
Output Connector J3:
Molex 90130-1108
Pin
1
3
+
–
1
2
3
4
5
6
7
8
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansﬁeld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
Description
AC Neutral
AC Line
+DC_OUT
+DC_OUT_RTN
+5V_AUX
PWR_OK
+12V_FAN_RTN
PS_ON
+ Remote Sense
– Remote Sense
+12V_FAN
+5V_AUX_RTN
Mating Housing
Molex 0009930300
Molex 0901420008
Crimp Terminal/Pins
Molex 0008500105 (18-24 AWG)
Molex 0008500107 (22-26 AWG)
Molex 0901190109
This product is subject to the following operating requirements and the Life and Safety Critical Application Sales
Policy. Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. (“Murata”) makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the
granting of licenses to make, use, or sell equipment constructed in accordance therewith. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards that anticipate dangerous consequences of failures, monitor failures and their consequences, lessen
the likelihood of failures that might cause harm, and take appropriate remedial actions. Buyer will fully indemnify Murata, its afﬁliated companies, and its representatives against any damages arising out of the use of any Murata products in safety-critical applications. Speciﬁcations are subject
to change without notice.
© 2014 Murata Power Solutions, Inc.
www.murata-ps.com/support
MVAC250.B02 Page 9 of 9

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