EPP-400-18 - Power Supply Mean Well - Free user manual and instructions
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| Product Type | AC-DC Power Supply |
| Brand | Mean Well |
| Model | EPP-400-18 |
| Output Voltage | 18V DC |
| Output Current | 22.2A |
| Output Power | 400W |
| Input Voltage Range | 90-264VAC |
| Input Frequency | 47-63Hz |
| Efficiency | 94% typical |
| Protection Features | Short circuit, overload, over voltage, over temperature |
| Cooling Method | Free air convection |
| Operating Temperature | -30°C to +70°C (with derating) |
| Dimensions (W x L x H) | 215 x 115 x 50 mm |
| Weight | 0.9 kg |
| Mounting | Enclosed with screw terminals |
| Safety Approvals | UL, TUV, CE, CB |
| Maintenance and Cleaning | Clean with a dry cloth; ensure vents are not blocked |
| Safety Instructions | Disconnect power before servicing; follow local electrical codes |
| Spare Parts and Repair | No user-serviceable parts; contact authorised service centre |
Frequently Asked Questions - EPP-400-18 Mean Well
What is the input voltage range of the Mean Well EPP-400-18?
The EPP-400-18 accepts a universal input of 90-264VAC with a frequency of 47-63Hz, making it suitable for use in most countries.
What protections are included in the EPP-400-18?
The power supply features short circuit, overload, over voltage, and over temperature protections to ensure safe and reliable operation.
Can the EPP-400-18 be used for battery charging?
It is designed as a general-purpose power supply. For battery charging, you need to ensure the output voltage and current limits are compatible. It provides a constant voltage output of 18V DC and up to 22.2A, but it does not include a dedicated charging curve.
How do I connect the AC input and DC output?
Connect the AC supply to the L and N terminals on the input connector, and the ground to PE. On the output side, connect your load to the +V and -V terminals. Always ensure polarity is correct.
What is the operating temperature range for this power supply?
The EPP-400-18 can operate from -30°C to +70°C with derating above 50°C. Ensure adequate airflow and mounting to keep within the specified range.
Is the EPP-400-18 suitable for outdoor use?
No, it is designed for indoor use in a dry environment. If outdoor installation is required, it must be placed in a suitable IP-rated enclosure.
How does the cooling system work?
The unit uses free air convection cooling, meaning it has no internal fans. This makes it silent and more reliable, but you must maintain proper spacing around the unit for airflow.
What is the efficiency of the EPP-400-18?
It reaches up to 94% efficiency, which reduces energy loss and heat generation. This is especially important for continuous operation in industrial applications.
Does the EPP-400-18 come with a warranty?
Mean Well offers a 3-year warranty for the EPP-400 series. Please keep the receipt and contact your distributor for warranty service.
What should I do if the power supply is not working?
Check the input fuse, verify the AC supply voltage, and ensure the load is within limits. If it still doesn't work, contact an authorised service centre for repair. Do not attempt to open the unit as it contains hazardous voltages.
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USER MANUAL EPP-400-18 Mean Well
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Product information
Brand : Mean Well
Model : EPP-400-18
Category : Power Supply