# POWER SUPPLY, AC-DC, 24V, 16.66A

![Product image](https://novapart.co/image/farnell:3604633/)

**URL**: https://novapart.co/products/MDS-400APB24%20AA/power-supply-ac-dc-24v-1666a
**SKU**: MDS-400APB24 AA
**Manufacturer**: DELTA ELECTRONICS
**Category**: Power & Line Protection || Power Supplies || AC / DC Converters || AC / DC Open Frame Power Supplies
**Price**: €128.1100
**Stock**: 10+
**Lead Time**: 401 days (indicative)

## Description

Power Supply Applications:ITE & Medical; No. of Outputs:1 Output; Power Rating (Forced Cooling):400W @ 10CFM; Power Rating (Convection Cooling):200W; Input Voltage VA 52AH7311

## Specifications

| Parameter | Value |
|---|---|
| Product Range | MDS Series |
| No. Of Outputs | 1 Output |
| Input Voltage Vac | 90V AC to 264V AC |
| Power Supply Output Type | Adjustable, Fixed |
| Output Current - Output 1 | 16.66A |
| Output Current - Output 2 | - |
| Output Current - Output 3 | - |
| Output Current - Output 4 | - |
| Output Voltage - Output 1 | 24V |
| Output Voltage - Output 2 | - |
| Output Voltage - Output 3 | - |
| Output Voltage - Output 4 | - |
| Power Supply Applications | ITE & Medical |
| Power Rating (Forced Cooling) | 400W @ 10CFM |
| Power Rating (Convection Cooling) | 200W |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3604633/)

**TECHNICAL DATASHEET** 

## **Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

## **MDS-400APB24** 

## **Highlights & Features** 

- Safety Approvals to IEC 60601-1 3.1rd ed. & IEC 60950-1 

- Compliant with IEC 60601-1-2 4th Ed. Requirements 

- Up to 200W convection, 400W force air 

- IT & Medical Safety Approvals 

## **Safety Standards** 

CB Certified for worldwide use 

**Model Number:** MDS-400APB24 **Unit Weight:** 405 g **Dimensions (W x L x H):** 76.5 x 127.3 x 36.1 mm 3 x 5 x 1.4 inch 

## **General Description** 

The MDS-400APB24 of internal open frame power supplies come with universal AC input range from 90Vac to 264Vac. Other features include low leakage, Type BF Patient Access Leakage Currents, and electric shock protection compliance with 2 x MOPP requirements. The MDS series is certified for EMC standards according to EN 55011for industrial, scientific and medical (ISM) radio-frequency equipment; and, EN 55032 for Industrial Technology Equipment (ITE) radio-frequency equipment. In addition, only recognized Japanese capacitors are used to ensure long product life. 

The MDS-400A series comes with both medical and ITE safety approvals, including UL/CE/CCC (5000meters), and CB certification. Designs are compliant with RoHS Directive 2011/65/EU for environmental protection. 

## **Model Information** 

## Medical AC-DC Open Frame 

|**ModelNumber**|**Main Output**<br>**Voltage**|**Main Output**<br>**Current**|**Standby**<br>**Output**<br>**Voltage**|**Standby**<br>**Output**<br>**Current**|**Fan Output**<br>**Voltage**|**Fan Output**<br>**Current**|**Total Max Output Power**|
|---|---|---|---|---|---|---|---|
|MDS-400APB24|24Vdc|0-16.66A|5Vdc|0-2A|12Vdc|0.05-0.6A1)|400W2)|



- 1) Fan output will be presenting when 24V main output is available 

2) With 10CFM force air 

## **Model Numbering** 

**==> picture [518 x 46] intentionally omitted <==**

**----- Start of picture text -----**<br>
MDS  400  A  P  B  24  <br>Delta Medical Power  Max wattage in the  Family Code  Product Type  Input Type Code Output Voltage  Revision code,<br>Supply product series. 400 →400W  A ～  Z P: Open Frame  B: 3pin Class I  24 for 24V  Refer to page.7<br>**----- End of picture text -----**<br>


All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (January 2019, Rev. 10)** 

1 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

## **Specifications** 

Input Ratings / Characteristics 

|Nominal Input Voltage<br>~~CY~~|100-240Vac<br>~~CY~~|
|---|---|
|Input Voltage Range<br>~~CY~~|90-264Vac<br>~~CY~~|
|Nominal Input Frequency|50-60Hz|
|Input FrequencyRange|47-63Hz|
|Input Current(max)|5.5A|
|Input Surge Voltage(max)|300Vac for 100ms|
|Full load Efficiency (typ.)|92% @ 115Vac/60Hz<br>93% @ 230Vac/50Hz, Reference Fig.1|
|Standby Power (max)|0.5W (only standby working with Inhibit signal high)<br> @115Vac/60Hz, 230Vac/50Hz|
|Inrush Current(max)|40A@230Vac, cold start|
|Input-PE(protective earth)leakage current(max)|0.1mA@NC, 0.3mA@SFC1)|
|Output-PE(protective earth)leakage current for Type BF application(max)|0.1mA@NC, 0.5mA@SFC 1)|
|Power Factor(min)|0.95@115V/50Hz, 230V/50Hz, full load|



1) NC: normal condition, SFC: single fault condition 

Leakage Current 

~~DO~~ Input-PE Leakage Current 100Vac/60Hz(Typ) 264Vac/60Hz(Typ) Delta Limit IEC60601-1 Limit Normal Condition  18.3uA 44.6uA 100uA max 5000uA max Single Fault Condition  33.7uA 91.9uA 300uA max 10000uA max ~~ee~~ Output-PE Leakage Current forType BF application Normal Condition  29.4uA 87.3uA 100uA max 100uA max ~~>~~ Single Fault Condition 43.5uA 130.5uA 500uA max 500uA max 100.000 90.000 80.000 115Vac 70.000 230Vac 60.000 50.000 25% 50% 75% 100% Output Load 

**Fig.1 Efficiency versus output load** 

All parameters are specified at 25°C ambient unless otherwise noted. 2 | **www.DeltaPSU.com (January 2019, Rev. 10)** 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

## Output Ratings / Characteristics 

|Output Ratings / Characteristics||
|---|---|
|Nominal Output Voltage(Vrated)|24V|
|Output Voltage Tolerance|±3%|
|Output Power|400W max with 10CFM air cooling|
|Line Regulation(max)|±0.5%|
|Load Regulation(max)|±1%|
|Ripple& Noise(typ.)|1%pk-pkVrated@Full load,  Reference  Fig. 2|
|Start-upTime(max)|2000ms@115Vac|
|Hold-upTime(min)|10ms@115Vac, with 400W load|
|Dynamic Response(Overshoot & Undershoot O/P Voltage)|±5%@50-100% load|
|Capacitive load(max)|1500uF|
|Rise time(max)|100ms|
|Remote Sense|Compensate up to 500mV lead drop with remote sense<br>Short and reverse connection protected. PSU can work<br>normally with remote sense pins left open.|



**==> picture [412 x 9] intentionally omitted <==**

**----- Start of picture text -----**<br>
(a) 115V (measured value=106mV)  (b) 230V(measured value=104mV)<br>**----- End of picture text -----**<br>


**Fig.2 Ripple & Noise example, 20MHz BW** 

Output Ratings / Characteristics—Standby Output 

**==> picture [451 x 153] intentionally omitted <==**

**----- Start of picture text -----**<br>
Nominal  Output Voltage of standby output (Vrated) 5V<br>Total Regulation of standby output ± 3%<br>Ripple & Noise of  standby output  100mV max (Refer to Fig. 3)<br>PSU Load<br>a 0.47uF Ceramic oe Scope<br>5cm<br>10uF Electrolytic<br>Test Fixture<br>**----- End of picture text -----**<br>


**Fig.3 Ripple & Noise measurement circuit** 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (January 2019, Rev. 10)** 

3 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

|Mechanical||
|---|---|
|Case Cover|NA|
|Dimensions(W x L x H typ.)|76.5 x 127.3 x 36.1mm(3 x 5 x 1.4inch)|
|Unit Weight|405g|
|Indicator|NA|
|CoolingSystem|NA|



|Environment||
|---|---|
|Surrounding Air Temperature<br>Operating|Absolute Max<br>-10°C to+70°C, supported power linearly de-rate from<br>50°C to 50% rated up to 70°C for forced air.<br>Convection power de-rate from 200W @ 40°C  to 100W<br>@ 60°C<br>Note: see power de-rating curve|
|Storage|-40°C to+85°C|
|OperatingHumidity|5-95% RH(Non-Condensing)|
|OperatingAltitude|5,000 meters(16,400 feet or 50kPa)|
|Non-operatingAltitude|5,000 meters(16,400 feet or 50kPa)|
|Shock Test(Non-Operating)|50G,11ms,3 shocks for each direction|
|Vibration(Operating)|5-500Hz,5Grms,15 minute for each three axis|



Power De-rating curve 

**==> picture [382 x 232] intentionally omitted <==**

**----- Start of picture text -----**<br>
Output<br>Power<br>10 CFM forced air<br>400W<br>200W<br>Convection<br>100W<br>Ambient<br>-10 ﾟ C 40 ﾟ C 50 ﾟ C 60 ﾟ C 70 ﾟ C Temperature<br>**----- End of picture text -----**<br>


All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (January 2019, Rev. 10)** 

4 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

## Thermal Fixture Setup. With Fan P/N: DELTA AFB0512HHD 

**==> picture [72 x 6] intentionally omitted <==**

**----- Start of picture text -----**<br>
Airflow Direction 10CFM<br>**----- End of picture text -----**<br>


## Protections 

Overvoltage (max) 135% of rated voltage, Latch Mode Overload / Overcurrent (max) Main output 160% of ratedcurrent Standby 3A max Hiccup Mode(Non-Latching, Auto-Recovery) Over Temperature Latch Mode Short Circuit Hiccup Mode,(Non-Latching, Auto-Recovery) 

## Reliability 

MTBF(Minimum) at 115Vac, 400W, 35°C,  10CFM Air Flow Convection A 500 kHrs based on Telecordia SR-332 Operating life at 115Vac, 400W, ambient 25 °C,10CFM Air Flow 26,280Hrs 

## Safety Standards / Directives 

Medical Safety IEC60601-12[nd] and 3[rd] , and 3[rd] +A1 edition CB report TUV EN60601-1:2006 UL60601-1+CAN/CSA 60601-1: (Ed.3.2005) ITE Safety IEC60950-1 CB report TUV60950-1 UL60950-1+CAN/CSA60950-1 GB4943.1-2011, GB9254-2008, GB17625.1-2003 CE MDD Directive 93/42/EEC Environmental RoHS Directive 2011/65/EU Compliant Galvanic Isolation Input to/Output (2XMOPP) 4000 Vac Input to/Ground(1XMOPP) 1500Vac[1)] Output to/Ground(1XMOPP) 1500Vac ( Type BF application rated) 

1) PSU can support PoE applications with Primary to FG 2500Vac test. 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (January 2019, Rev. 10)** 

5 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

EMC (Compliant with IEC 60601-1-2 4th Ed. Requirements) 

|EMC (Compliant with IEC 60601-1-2 4th Ed. Requirements)||
|---|---|
|EMC / Emissions|EN55011 & compliant with EN55032, FCC Title<br>47:Class B|
|Harmonic Current Emissions<br>IEC61000-3-2|Meet Class D limit|
|Immunityto||
|Voltage Flicker<br>IEC61000-3-3||
|Electrostatic Discharge<br>IEC61000-4-2|Level 4 Criteria A1)<br>Air Discharge: 15kV<br>Contact Discharge: 8kV|
|Radiated Field<br>IEC61000-4-3|Criteria A1)<br>80MHz-2700MHz, 10V/m AM modulation<br>385MHz-5785MHz, 28V/m Pulse mode and other<br>modulation|
|Electrical Fast Transient / Burst<br>IEC61000-4-4|Level 3 Criteria A1):2kV|
|Surge<br>IEC61000-4-5|Level 3 Criteria A1)<br>Common Mode3): 2kV<br>Differential Mode4): 1kV|
|Conducted<br>IEC61000-4-6|Level 2 Criteria A1)<br>150kHz-80MHz, 3Vrms,6Vrms at ISM bands and<br>Amateur radio bands|
|Power Frequency Magnetic Fields<br>IEC61000-4-8|Criteria A1)<br>Magnetic field strength 30A/m|
|Voltage Dips<br>IEC61000-4-11|Criteria A1)<br>0% UT, 0.5 cycle (10ms)<br>, 0o/45o/90o/135o/180o/225o/270o/315o/360o<br>Criteria B2)<br>0% UT, 1 cycle (20ms),  0o<br>Criteria B2)<br>70% UT, 25 cycle (500ms), 0o<br>Criteria B2)<br>0% UT,250 cycle (5000ms), 0o|



- 1) Criteria A: Normal performance within the specification limits 

- 2) Criteria B: Output out of regulation, or shuts down during test. Automatically restore to normal operation after test. 

- 3) Asymmetrical: Common mode (Line to earth) 

- 4) Symmetrical: Differential mode (Line to line) 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (January 2019, Rev. 10)** 

6 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

## **Dimensions** 

**W x L x H:** 76.5 x 127.3 x 36.1 mm **Mechanical drawing (3Pin input type)** 

## **Notes** 

## ― Dimensions are in mm(inches) 

- CN1 mates with Molex housing 26-03-4030 and Molex series 6838 crimp terminals. Input Line can also be connected to Input Neutral, and Input Neutral can be connected to Input Line . 

- CN102 & CN103(Output Connector) : Cross recessed pan head screws M3X0.5x10, with spring washers and flat washers, force required to tighten the screws is 7~8kgf.cm(6.1~7.0inch-lb) 

- CN2 :  PINGOOD JP-13T or equivalent mates with KST:FDFNYD1-187 or other applicable connectors. 

- CN202 mates with JST housing PHR-2 and JST SPH-002T-P0.5S terminals. 

- CN101 mates with Molex housing 1041421000 and Molex series 104539-8002 crimp terminals. 

|Control and STANDBY connector CN101|Control and STANDBY connector CN101|
|---|---|
|Pin 1|Remote sense +|
|Pin 2|Remote sense –|
|Pin 3|Power Good +|
|Pin 4|Power Good -(DC RTN)|
|Pin 5|Remote ON_OFF/INHIBIT +|
|Pin 6|Remote ON_OFF/INHIBIT -(DC RTN)|
|Pin 7|5V Standby|
|Pin 8|DC RTN|
|Pin 9|5V Standby|
|Pin 10|DC RTN|



Two mounting points in mechanical drawing need to be connected to system earth case together, Protective bonding conductor from the end product protective earth terminal (if any) can be tied to CN2 for open frame model. 

## **MDS-400APB24**  

|**MDS-400APB24 **|**MDS-400APB24 **|
|---|---|
|AA|Delta Standard|
|AB|A mating connector with Molex housing 1041421000 and Molex terminals 1045398002, with jumper wire between<br>pins 5 and 6, will be inserted into CN101. This will allow the power supply to turn on, without user intervention,<br>upon the application of input AC voltage Due to presence of mating connector, external connections cannot be<br>made to pins 1-10 of CN101.|



All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (January 2019, Rev. 10)** 

7 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

## **Functions** 

## Start-up Time 

The time required for the output voltage to reach 90% of its set value, after the input voltage is applied. 

## Rise Time 

The time required for the output voltage to change from 10% to 90% of its set value. 

## Hold-up Time 

Hold up time is the time when the AC input collapses and output voltage retains regulation for a certain period of time. The time required for the output to reach 90% of its set value, after the input voltage is removed. 

■ **Graph illustrating the Start-up Time, Rise Time, and Hold-up Time** 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (January 2019, Rev. 10)** 

8 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

## Dynamic Response 

The power supply output voltage will remain within ±5% of its steady state value, when subjected to a dynamic load 50 to 100% of its rated current. 

■ 50 to 100% Load 

## Short Circuit Protection 

The power supply’s output OLP/OCP function also provides protection against short circuits. When a short circuit is applied, the output current will operate in “Hiccup mode”, as shown in the illustration in the OLP/OCP section on this page. The power supply will return to normal operation after the short circuit is removed. 

## Inrush Current 

Inrush current is the peak, instantaneous, input current measured and, occurs when the input voltage is first applied. For AC input voltages, the maximum peak value of inrush current will occur during the first half cycle of the applied AC voltage. This peak value decreases exponentially during subsequent cycles of AC voltage. 

## Overload & Overcurrent Protections 

The power supply’s Overload (OLP) and Overcurrent (OCP) Protections will be activated before output current under 160% of IO (Max load). Upon such occurrence, VO will start to drop. Once the power supply has reached its maximum power limit, the protection will be activated and the power supply will go into “Hiccup mode” (Auto-Recovery). The power supply will recover once the fault condition causing the OLP and OCP is removed and IO is back within the specified limit. 

Additionally, if the Iout is <160% but >100% for a prolong period of time (depending on the load), the Over Temperature Protection (OTP) will be activated due to high temperature on critical components. The power supply will then go into latchmode. 

## Over Temperature Protection 

## Overvoltage Protection 

The power supply’s overvoltage circuit will be activated when its internal feedback circuit fails. The output voltage shall not exceed its specifications defined on Page 4 under “Protections”. Power supply will latch off, and require removal/re-application of input AC voltage in order to restart. 

As mentioned above, the power supply also has Over Temperature Protection (OTP). This is activated when the overload condition persists for an extended duration and the output current is below the overload trigger point but >100% load. In the event of a higher operating temperature condition at 100% load, the power supply will run into OTP when the surrounding air temperature is higher than the operating temperature. When activated, the output voltage will go into latch mode until the input voltage is removed; then, reapplied, and the surrounding air temperature drops to its normal operating temperature. 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (January 2019, Rev. 10)** 

9 

**TECHNICAL DATASHEET** 

**Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

## Power Good 

Power Good+ pin is an open collector transistor (40V/600mA rating). A resistor (suggested value 10Kohm, 1/8W) can be added between 5V STANDBY pin (or, other available pull-up voltage that is no greater than 30V) and the Power Good+ pin (refer to figure below). Value of pull-up resistor may have to be adjusted, depending on voltage used, and other end-use conditions of the Power Good+ pin connection to the product.  When AC input is on, Power Good+ pin will be high. When AC input is off, Power Good+ pin will be low. There will be a minimum of 3 milliseconds between the time the power good goes to low level, and the time when the output reaches 90% of its rated value. 

## Remote On_Off/ INHIBIT 

Remote ON_OFF/ INHIBIT can be used to enable or disable only the main output. When the main output is disabled, the +5V Standby output will continue to operate. This signal can be pulled down to a low level of 0.3 volts, or shorted to DC-Return, in order for the main output to be enabled; and, floated (no connection to the signal), or pulled up to a value greater than or equal to 3 volts, in order to disable the main output. 

## Remote Sense 

Remote sense feature can be used to compensate for the extra voltage drop on output wires that are connected from the main output terminals, to the load. With wires connected from the remote sense pins, at the same locations as the wires from the main output, the remote sense function can compensate up to 500mV voltage drop. The power supply will not be damaged if the remote sense pins are shorted, or if a reverse/inverted polarity connection is made to the load. 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (January 2019, Rev. 10)** 

10 

**TECHNICAL DATASHEET** 

## **Medical AC-DC Open Frame Power Supply 24V/400W 3”x5” High Density MDS-400APB24** 

## **Certificate** 

All Delta Medical Power products conform to the European directive 2011/65/EU. RoHS is the abbreviation for “Restriction of the use of certain hazardous substances 

Delta has been certified as meeting the requirement of ISO 13485: 2003 and EN ISO 13485:2012 for the design and manufacture of switching power supply and adaptor for medical device. 

In addition to a UL Total Certification Program (TCP) approved client laboratory for IEC60950 and IEC60065. Delta also has participated UL Client Test Data Program (CDTP) for IEC 60601 

## Attention 

Delta provides all information in the datasheets on an “AS IS” basis and does not offer any kind of warranty through the information for using the product. In the event of any discrepancy between the information in the catalog and datasheets, the datasheets shall prevail (please refer to www.DeltaPSU.com for the latest datasheets information). Delta shall have no liability of indemnification for any claim or action arising from any error for the provided information in the datasheets. Customer shall take its responsibility for evaluation of using the product before placing an order with Delta. 

Delta reserves the right to make changes to the information described in the datasheets without notice. 

All parameters are specified at 25°C ambient unless otherwise noted. **www.DeltaPSU.com (January 2019, Rev. 10)** 

11 



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