MEAN WELL EPS-120 Series 120W Single Output Switching Power Supply
Frequently Asked Questions
Q: How do I know if the power supply is compatible with my device?
A: Check the voltage and current requirements of your device. Ensure that the output specifications of the power supply match your device’s requirements.
Q: What should I do if the power supply overheats?
A: Disconnect the power supply immediately and allow it to cool down. Check for any obstructions to airflow and ensure proper ventilation around the power supply.
Q: Is it safe to leave the power supply plugged in when not in use?
A: It is recommended to unplug the power supply when not in use to prevent any potential electrical hazards or energy wastage.
Features
- 4″x2″ miniature size
- Universal AC input / Full range
- EMI Class B for both Class I (with FG) and Class II (without FG) configuration
- No load power consumption<0.3W
- High efficiency up to 91%
- Protections: Short circuit / Overload / Over voltage/ Over temperature
- Cooling by free air convection for 84W and 120W with 10CFM forced air
- Built-in 12V/0.5A fan supply
- LED indicator for power on
- Operating altitude up to 5000 meters
- 3 years warranty
Applications
- Industrial automation machinery
- Industrial control system
- Mechanical and electrical equipment
- Electronic instruments, equipment or apparatus
GTIN CODE
MW Search: https://www.meanwell.com/serviceGTIN.aspx
Description
EPS-120 is a 120W highly reliable green PCB-type power supply with a high power density on the 4″ by 2″ footprint. It accepts 80~264VAC input and offers various output voltages between 12V and 48V. The working efficiency is up to 91% and the extremely low no load power consumption is down below 0.3W. EPS-120 is able to be used for both Class I (with FG) and ClassIl (no FG) system design. EPS-120 has complete protection functions; it has complied with international safety regulations such as TUV BS EN/EN62368-1, UL62368-1 and IEC62368-1. EPS-120 series serves as a high-price-to-performance power supply solution for various industrial applications.
Model Encoding
SPECIFICATION
| MODEL | EPS-120-12 | EPS-120-15 | EPS-120-24 | EPS-120-27 | EPS-120-48 | ||
|
OUTPUT |
DC VOLTAGE | 12V | 15V | 24V | 27V | 48V | |
|
CURRENT |
10CFM | 10A | 8A | 5A | 4.5A | 2.5A | |
| Convection | 7.0A | 5.6A | 3.5A | 3.15A | 1.75A | ||
| RATED POWER | 10CFM | 120W | 120W | 120W | 121.5W | 120W | |
| Convection | 84W | 84W | 84W | 85W | 84W | ||
| RIPPLE & NOISE (max.) Note.2 | 120mVp-p | 120mVp-p | 150mVp-p | 150mVp-p | 200mVp-p | ||
| VOLTAGE ADJ. RANGE | 11.4~12.6V | 14.3~15.8V | 22.8~25.2V | 25.6 ~ 28.4V | 45.6 ~50.4V | ||
| VOLTAGE TOLERANCE Note.3 | ±2.0% | ±2.5% | ±1.0% | ±1.0% | ±1.0% | ||
| LINE REGULATION | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ±0.5% | ||
| LOAD REGULATION | ±1.0% | ±1.0% | ±1.0% | ±1.0% | ±1.0% | ||
| SETUP, RISE TIME | 500ms, 30ms/230VAC 500ms, 30ms/115VAC at full load | ||||||
| HOLD UP TIME (Typ.) | 50ms/230VAC 10ms/115VAC at full load | ||||||
|
INPUT |
VOLTAGE RANGE Note.4 | 80 ~ 264VAC 113 ~ 370VDC | |||||
| FREQUENCY RANGE | 47 ~ 63Hz | ||||||
| EFFICIENCY (Typ.) | 88% | 88.5% | 90% | 90% | 91% | ||
| AC CURRENT (Typ.) | 2.1A/115VAC 1.2A/230VAC | ||||||
| INRUSH CURRENT (Typ.) | COLD START 30A/115VAC 60A/230VAC | ||||||
| LEAKAGE CURRENT | <0.75mA / 240VAC | ||||||
|
PROTECTION |
OVERLOAD |
115~150% rated output power | |||||
| Protection type : Hiccup mode, recovers automatically after fault condition is removed | |||||||
|
OVERVOLTAGE |
13.2 ~ 15.6V | 16.5 ~ 19.5V | 26.4 ~ 31.2V | 29.7 ~ 35V | 52.8 ~ 62.4V | ||
| Protection type : Shut down o/p voltage, re-power on to recover | |||||||
| OVER TEMPERATURE | Protection type : Shut down o/p voltage, re-power on to recover | ||||||
| FUNCTION | FAN SUPPLY | 12V@0.5A for driving a fan ; tolerance -15% ~ +10% at main output 40% rated current (10CFM) | |||||
|
ENVIRONMENT |
WORKING TEMP. | -30 ~ +70℃ (Refer to “Derating Curve”) | |||||
| WORKING HUMIDITY | 20 ~ 90% RH non-condensing | ||||||
| STORAGE TEMP., HUMIDITY | -40 ~ +85℃, 10 ~ 95% RH | ||||||
| TEMP. COEFFICIENT | ±0.03%/℃ (0 ~ 50℃) | ||||||
| OPERATING ALTITUDE Note.6 | 5000 meters | ||||||
| VIBRATION | 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes | ||||||
|
SAFETY & EMC (Note 5) |
SAFETY STANDARDS | UL62368-1, TUV BS EN/EN62368-1, IEC62368-1, CCC GB4943.1, EAC TP TC 004 approved | |||||
| WITHSTAND VOLTAGE | I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC | ||||||
| ISOLATION RESISTANCE | I/P-O/P, I/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH | ||||||
| EMC EMISSION | Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,-3, GB9254.1 Class B,GB17625 Class A, EAC TP TC 020 | ||||||
|
EMC IMMUNITY |
Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, BS EN/EN61000-6-2, heavy industry level, criteria A, EAC TP TC 020 | ||||||
|
OTHERS |
MTBF | 3746.9K hrs min. Telcordia SR-332 (Bellcore) ; 491.2K hrs min. MIL-HDBK-217F (25℃) | |||||
| DIMENSION | 101.6*50.8*29mm (L*W*H) | ||||||
| PACKING | 0.15Kg; 72pcs/11.8Kg/0.82CUFT | ||||||
| NOTE | 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25 of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12″ twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor. 3. Tolerance : includes set up tolerance, line regulation and load regulation. 4. Derating may be needed under low input voltages. Please check the derating curve for more details. 5. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf ) 6. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft). ※ Product Liability Disclaimer：For detailed information, please refer to https://www.meanwell.com/serviceDisclaimer.aspx |
||||||
Block Diagram
Derating Curve
Output Derating VS Input Voltage
Mechanical Specification
(Unit: mm , tolerance ± 1mm)
AC Input Connector (CN1) : JST B3P-VH or equivalent
| Pin No. | Assignment | Mating Housing | Terminal |
| 1 | AC/N | JST VHR
or equivalent |
JST SVH-21T-P1.1
or equivalent |
| 2 | No Pin | ||
| 3 | AC/L |
Grounding required
- HS1,HS2 cannot be shorted.
- HS1 must have safety isolation distance with system case.
DC Output Connector (CN2) : JST B4P-VH or equivalent
| Pin No. | Assignment | Mating Housing | Terminal |
| 1,2 | +V | JST VHR
or equivalent |
JST SVH-21T-P1.1
or equivalent |
| 3,4 | -V |
FAN Connector(CN101) : JST B2B-PH-K-S or equivalent
| Pin No. | Assignment | Mating Housing | Terminal |
| 1 | +12V | JST PHR-2
or equivalent |
JST SPH-002T-P0.5S
or equivalent |
| 2 | DC COM |
Note:
- The FAN SUPPLY is designed to serve as the source of the additive external fan for the cooling of the power supply, enabling the full load delivery and assuring the best
- The PCB type(Blank type)model delivers EMI Class B for both conducted emission and radiated emission for the power supply, when configured into either ClassⅠ(with FG) life span of the product. Please do not use this FAN SUPPLY to drive other devices.
or ClassⅡ(without FG) system.
Installation Manual
Please refer to : http://www.meanwell.com/manual.html
Documents / Resources
 |
MEAN WELL EPS-120 Series 120W Single Output Switching Power Supply [pdf] User Guide EPS-120 Series 120W Single Output Switching Power Supply, EPS-120 Series, 120W Single Output Switching Power Supply, Output Switching Power Supply, Switching Power Supply, Power Supply, Supply |