AC/DC Power Supplies
Delta Electronics IMA-S400 Series 400W Medical / Industrial AC-DC Power Supply
The Delta IMA-S400 series is an enclosed AC-DC power supply family for medical, industrial and IT applications. It accepts a wide 80–275Vac input range and also supports 120–300Vdc input operation. The series provides 12Vdc, 24Vdc or 48Vdc main output options with up to 33.3A, 16.7A or 8.3A respectively, plus a 5Vdc standby output rated at 0.5A....
Read MoreThe Delta IMA-S400 series is an enclosed AC-DC power supply family for medical, industrial and IT applications. It accepts a wide 80–275Vac input range and also supports 120–300Vdc input operation. The series provides 12Vdc, 24Vdc or 48Vdc main output options with up to 33.3A, 16.7A or 8.3A respectively, plus a 5Vdc standby output rated at 0.5A.
The Delta IMA-S400 features include up to 400W output power, adjustable main output voltage range of ±20%, active current sharing, PMBus-compatible monitoring and control, remote on/off, power good signal, remote sense, 2 × MOPP isolation, low acoustic noise below 30 dB(A), and a 500,000 hour MTBF. The standard IMA-S400 variants use an enclosed 1U chassis with fan cooling.
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Features
- Input voltage range: 80–275Vac or 120–300Vdc.
- Output voltage: 12Vdc, 24Vdc or 48Vdc main output plus 5Vdc standby.
- Output current: up to 33.3A at 12Vdc, 16.7A at 24Vdc, or 8.3A at 48Vdc.
- Output power: 400W maximum.
- High efficiency up to 94%.
- Main output adjustable by ±20%.
- Active current sharing.
- PMBus compatible for control, programming and monitoring.
- Remote on/off, remote sense and power good signal.
- 2 × MOPP isolation.
- Low acoustic noise level of less than 30 dB(A).
- Medical, industrial and IT safety approvals.
Specifications
| AC/DC INPUT (J1) | |||
|---|---|---|---|
| Parameter | IMA-x400-12 | IMA-x400-24 | IMA-x400-48 |
| Nominal Input Voltage | 100 Vac to 240 Vac | ||
| AC Operating Input Voltage Range | 80 Vac to 275 Vac | ||
| Nominal Input Frequency | 50 / 60 Hz | ||
| Input Frequency Range | 47 Hz to 63 Hz | ||
| DC Input Voltage Range | 120 Vdc to 300 Vdc | ||
| Maximum Input Current | 6 A @ 80 Vac / 3.8 A @ 120 Vdc | ||
| Efficiency @ 100% load @ 230 Vac | 92% | 94% | 94% |
| Efficiency @ 100% load @ 115 Vac | 90% | 92% | 92% |
| Max Inrush Current1 | < 20 A (hot and cold turn on) | ||
| Input Fuse | DC input compliant, dual 10 A fuses used | ||
| Power Factor2 (typical) | 0.9 (EN 61000-3-2, Class A compliant) | ||
| 1) Hot and cold turn on 2) EN 61000-3-2, Class A compliant | |||
| MAIN DC OUTPUT (J2) | |||
|---|---|---|---|
| Parameter | IMA-x400-12 | IMA-x400-24 | IMA-x400-48 |
| Nominal Output Voltage | 12 V | 24 V | 48 V |
| Output Voltage Adjustment Range | 9.6 V to 14.4 V | 19.2 V to 28.8 V | 38.4 V to 56.0 V |
| Maximum Output Power | 400 W | ||
| Maximum Output Current | 33.3 A | 16.7 A | 8.33 A |
| Output Voltage Regulation Total | ± 2.25% | ||
| Output Voltage Regulation Over Line | 0.25% | ||
| Output Voltage Regulation Over Load | 1% | ||
| Output Voltage Regulation Over Temperature | 1% | ||
| Maximum Output Capacitive Load | 10,000 µF | ||
| Dynamic Load Regulation1 | < 5% | ||
| PARD2 (20 MHz) | < 1% peak to peak | ||
| Turn On Overshoot | < 2% | ||
| Output Rising Time | < 150 ms | ||
| Hold Up Time | 20 ms nominal | ||
| Start Up Time (AC OFF → ON) | < 2.5 s (nominal input, max. load) | ||
| Start Up Time (Remote OFF → ON) | < 150 ms (nominal input, max. load) | ||
| Output Over Voltage Protection | YES, latch mode; 15 V to 17.5 V | YES, latch mode; 30 V to 35 V | YES, latch mode; 58.5 V to 63 V |
| Output Over Current Protection | YES, at 108% to 140% of nominal output current; auto recovery | ||
| Short Circuit Protection | YES, auto recovery | ||
| Over Temperature Protection | YES, auto recovery | ||
| Remote Sense3 | 200 mV total voltage drop compensation via +V_SENSE and -V_SENSE (J3 Pins 13 and 14) | ||
| Output Current Derating vs Output Voltage | When Vout > 12 Vdc: reduce by 2.292 A per 1 V | When Vout > 24 Vdc: reduce by 0.583 A per 1 V | When Vout > 48 Vdc: reduce by 0.148 A per 1 V |
| 1) 50% step from 5% load, 1 A/µs, 10 µF Tan and 1µF ceramic capacitor 2) 10 µF Tan and 1µF ceramic capacitor 3) Do not short or reversely connect +V_SENSE and -V_SENSE — this can damage the power supply. | |||
| AUXILIARY DC OUTPUT (J3) | |
|---|---|
| Connector Type | Molex, Part number 87833-1420, 14 pin |
| Nominal Output Voltage | 5 V |
| Output Voltage Adjustment Range | – |
| Output Voltage Regulation Total | 2.25% |
| Output Voltage Regulation Over Line | 0.25% |
| Output Voltage Regulation Over Load | 1% |
| Output Voltage Regulation Over Temperature | 1% |
| Maximum Output Current | 0.5 A |
| Maximum Output Capacitive Load | 1,000 µF |
| Output Over Voltage Protection | Yes, at 5.5 V to 6 V; latch mode |
| Output Over Current Protection | Yes, at 1.0 A to 1.3 A; auto recovery |
| Short Circuit Protection | YES, auto recovery |
| Over Temperature Protection | YES, auto recovery |
| Note: There is no galvanic isolation between 5VSB GND and Main DC Output GND. | |
| GALVANIC ISOLATION & LEAKAGE CURRENTS | ||
|---|---|---|
| Galvanic Isolation (IMA-x400-xx) | ||
| Input to Output | Reinforced | 4000 Vac; 2 x MOPP |
| Input to Case | Basic | 1500 Vac; 1 x MOPP |
| Output to Case | Basic | 1500 Vac; 1 x MOPP |
| Note: There is no galvanic isolation between 5VSB GND and Main DC Output GND. | ||
| AC Leakage Current — Input to Earth Ground (IMA-x400-xx) | ||
| Normal condition (low line) | 132 Vac | < 150 µA @ 60 Hz; < 150 µA @ 63 Hz |
| Single fault condition (low line) | 132 Vac | < 250 µA @ 60 Hz; < 260 µA @ 63 Hz |
| Normal condition (high line) | 264 Vac | < 300 µA @ 60 Hz; < 300 µA @ 63 Hz |
| Single fault condition (high line) | 264 Vac | < 500 µA @ 60 Hz; < 520 µA @ 63 Hz |
| AC Leakage Current — Output to Earth Ground1 | ||
| Normal condition | 264 Vac | Typical @ 60 Hz: 45 µA; Max @ 63 Hz: < 60 µA |
| Single fault condition (neutral open) | 264 Vac | Typical @ 60 Hz: 45 µA; Max @ 63 Hz: < 80 µA |
| Single fault condition (ground open) | 264 Vac | Typical @ 60 Hz: 114 µA; Max @ 63 Hz: < 150 µA |
| AC Backdrive fault | 264 Vac | < 450 µA @ 60 Hz; < 550 µA @ 63 Hz |
| 1) Meets IEC 60601-1 BF leakage current limit | ||
| ENVIRONMENTAL CONDITIONS | |||
|---|---|---|---|
| Parameter | IMA-x400-12 | IMA-x400-24 | IMA-x400-48 |
| Ambient Operating Temperature Range | -20°C to +70°C (-4°F to +158°F) | ||
| Ambient Storage Temperature Range | -40°C to +85°C (-40°F to +185°F) | ||
| Relative Humidity | < 95% (non-condensing) | ||
| Operating Altitude1 2 | -200 m to 5,000 m (-650 ft to 16,400 ft) | ||
| Pollution Degree | 2 | ||
| Output Power Derating vs Input Voltage | When AC input voltage < 90 Vac, output power reduced by 4 W per 1 V | ||
| Output Power Derating vs Ambient Temperature | See datasheet derating curves (Fig. 7-8) | ||
| Shock Test (non-operating) | IEC 60068-2-27 compliant, 50 g, 11 ms, 3 shocks each direction | ||
| Vibration (non-operating) | IEC 60068-2-6 compliant, 2.09 Grms, 5 Hz to 500 Hz, 20 minutes per side (3 planes) | ||
| 1) Ambient operating temperature decreases by 1°C per 305 m (1000 ft) altitude increase 2) Maximum operating altitude requirements for different types of products, see “Safety standards and directives”, p. 6 | |||
| RELIABILITY | |
|---|---|
| MTBF1 | 500,000 hours (Telecordia SR-332, Issue 3, 25°C, 90% confidence level) |
| Expected Capacitor Life Time2 | 10 years (nominal input voltage, 45°C, 80% load) |
| Warranty | 3 years |
| No fan — system airflow cooling or natural convection cooling | |
| 1) Telecordia SR-332, Issue 3, 25°C, 90% confidence level 2) Nominal input voltage, 45°C, 80% load | |
| SAFETY STANDARDS & DIRECTIVES | |
|---|---|
| IEC 62368 Edition 2 | IEC 62368-1 (2014) Edition 2 5000 m (16,400 ft) altitude, 120 V to 300 Vdc and 100 V to 240 ±10% Vac |
| IEC/EN 60950-1, Edition 2 | UL 60950-1/CSA 22.2 No 60950-1, Edition 2 5,000 m (16,400 ft) altitude, 120 V to 300 Vdc and 100 V to 240 ±10% Vac (UL File E191395) |
| IEC/EN 60601-1, Edition 3 & IEC 60601-1-2 Edition 4 | IEC 60601-1:2005, EN60601-1(2006) ANSI/AAMI ES 60601-1(2005) CAN/CSA C22.2 No. 60601-1 (2008) 3,000 m (9,800 ft) altitude, 100 V to 240 Vac ±10% (UL File E325662) |
| Protection Class1 | I |
| Ecological | WEEE Directive 2012/19/EU RoHS EU Directive 2011/65/EU compliant |
| 1) Designed to support Type B Applied Part End Product Requirements | |
| EMC | |
|---|---|
| Fully tested according to EN 60601-1-2:2015 (4th edition) | |
| Test / Applied Standard | Details |
| Radiated Emissions1 | EN 55011, EN 55022 and FCC, Class B |
| Conducted Emissions1 | EN 55011, EN 55022 and FCC, Class B |
| Power Line Harmonics | EN 61000-3-2, Class A |
| Voltage Flicker | EN 61000-3-3 |
| ESD | EN 61000-4-2, level 4, 8 kV contact, 15 kV air |
| Radiated Immunity | EN 61000-4-3, level 3, 10 V/m |
| Electrical Fast Transient | EN 61000-4-4, level 4, ±4 kV |
| Surge Immunity | EN 61000-4-5, level 4, 2 kV DM, 4 kV CM |
| Conducted RF Immunity | EN 61000-4-6, level 2, 3 Vrms, 6 Vrms in ISM band |
| Power Frequency Magnetic Field | EN 61000-4-8, 30 A/m |
| Voltage Dips and Sags | EN 61000-4-11, 30%, 500 ms EN 61000-4-11, 60%, 100 ms EN 61000-4-11, 100%, 20 ms EN 60601-1-2:2015 (4th Ed.), 30%, 500 ms EN 60601-1-2:2015 (4th Ed.), 60%, 100 ms EN 60601-1-2:2015 (4th Ed.), 100%, 20 ms EN 60601-1-2:2015 (4th Ed.), 100%, 5000 ms |
| Ring Wave | EN 61000-4-12, level 3, 1 kV DM, 2 kV CM |
| Voltage Fluctuations | EN 61000-4-14, Class 3 |
| 1) Power Supply Unit inside a dummy system | |
| MECHANICAL DATA | |
|---|---|
| Dimensions (L x W x D) | 176.8 x 101.6 x 40.6 mm (6.96 x 4 x 1.6 in) |
| Weight | 0.960 kg (2.12 lb) |
| Indicator | Green LED |
| Cooling System | System airflow cooling or natural convection cooling (no integrated fan) |
| Acoustic Noise1 | < 30 dB(A) |
| AC/DC Input Port (J1) | Block M3.5 x 3 pins (Switchlab T14-EMII03, max. torque 1.3 Nm) |
| Main DC Output Port (J2) | Block M5 x 2 pins (Dinkle DT-7C-B01W-3943-02, M4 screws, max. torque 1.5 Nm) |
| Auxiliary DC Output + Signals Port (J3) | Connector x 14 pins (Molex 51110-1450 or 51110-1451) |
| 1) At 1 Hz to 20 kHz and a distance of 1 m. Test conditions: 100 Vac, 100% load, ambient temperature 30°C (86°F) | |
Selection Table
| Model Number | AC Input | DC Input | Main Output | Auxiliary Output |
|---|---|---|---|---|
| IMA-S400-12-ZNPLx | 80-275 Vac | 120-300 Vdc | 12 Vdc / 33.3 A | 5 Vdc / 0.5 A |
| IMA-S400-24-ZNPLx | 24 Vdc / 16.7 A | |||
| IMA-S400-48-ZNPLx | 48 Vdc / 8.33 A | |||
| IMA-C400-12-ZNPLx | 12 Vdc / 33.3 A | |||
| IMA-C400-24-ZNPLx | 24 Vdc / 16.7 A | |||
| IMA-C400-48-ZNPLx | 48 Vdc / 8.33 A | |||
| S = Standard | C = Conformal coated | ZNPLI = Remote ON when pin open | ZNPLY = Remote ON when pin shorted All models: 400 W, active current sharing, PMBus™ compatible, 1U form factor, no integrated fan (400 W) |
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Technical Drawings
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.