MEAN WELL NTS-300 Series 300W High Reliable True Sine Wave DC-AC Power Inverter

Product Description

The MEAN WELL NTS-300 is a 300W highly reliable off-grid true sine wave DC-AC power inverter. It features a digital design with MCU control for streamlined circuitry that quickly responds to environmental changes, enhancing reliability. With a 600W peak power capability, adjustable AC output voltage and frequency, and a wide operating temperature range of -25°C to +65°C, the NTS-300 is suitable for a variety of applications. When combined with batteries, it is ideal for residential, commercial, marine, automobile, mine, construction sites, and remote areas lacking utility power. The output can power fans, TVs, radios, phone chargers, PCs/laptops, lighting, electromechanical tools, communication equipment, power distribution cabinets, outdoor camping equipment, and marine AC power systems.

Key Features

• Compact size and light weight.
• True sine wave output (THD<3%).
• High surge power up to 600W.
• Fanless design for quiet operation.
• AC output voltage and frequency selectable by DIP S.W.
• Low no-load power dissipation (<1.5W max. in standby saving mode).
• Wide operating temperature range: -25°C to +65°C.
• Power ON-OFF remote control capability.
• Front panel indicator for operation status.
• Comprehensive Protections:
  • Input: Reverse polarity, DC low alarm, DC low shutdown, Over voltage.
  • Output: Short circuit, Overload, Over temp.
  • Battery over-discharge protection (Low voltage disconnect).
• Suitable for lead-acid or li-ion batteries.
• Optional carry handle accessory available (Order NO.: Carry handle, sold separately).
• Conformal coating for enhanced durability.
• 3 years warranty.

Applications

• Mobile devices
• Home and office appliances
• Power tools
• Portable equipment
• Vehicles
• Yachts
• Off-grid solar power systems
• Wireless networks
• Telecom or datacom systems

Model Encoding

The model number is structured to define specific configurations:

NTS - 300 - [AC Socket Type] - [DC Input Voltage] - [AC Output Voltage]

• AC output socket: (Type US, EU, CN, AU, UK, UN, GFCI outlet)
• DC input voltage: (12: 12Vdc, 24: 24Vdc, 48: 48Vdc)
• AC output voltage: (1: 100/110/115/120Vac, 2: 200/220/230/240Vac)
• Rated wattage: 300W
• Series name: NTS

Example: NTS-300-112 US indicates a 300W inverter with a US AC socket, 12Vdc input, and 110Vac output.

Specifications

Notes:

1. Efficiency, AC regulation and THD are tested by 300W, linear load at 12.5Vdc/25Vdc/50Vdc input voltage.
2. All parameters not specified above are measured at rated load, 25°C of ambient temperature and set to factory setting.
3. Internal pre-start circuit, the setup time is 8s.
4. The power supply is considered as an independent unit, but the final equipment still needs to re-confirm that the whole system complies with the EMC directives. For guidance on how to perform these EMC tests, please refer to "EMI testing of component power supplies." (as available on meanwell.com).

Product Liability Disclaimer: For detailed information, please refer to meanwell.com/serviceDisclaimer.aspx.

AC Output Socket Options

Derating Curves

Ambient Temperature Derating: The inverter operates at 100% load capacity from -25°C up to 40°C. Beyond 40°C, the load capacity gradually derates, reaching approximately 60% at 65°C.

DC Input Voltage Derating: The derating curve illustrates load capacity based on DC input voltage. For 12Vdc models, full load is supported between approximately 10.5Vdc and 16.5Vdc. For 24Vdc models, this range is 21Vdc to 33Vdc. For 48Vdc models, it is 42Vdc to 66Vdc. Operation outside these ranges may result in reduced output or shutdown.

Remote ON-OFF Control

The inverter can be controlled remotely via a dry contact connector on the front panel.

AC Output Voltage, Frequency, and Power Saving Mode Selection

Users can adjust the AC output voltage, frequency, and power saving mode using DIP switches (SW1-SW4) located on the panel. Factory settings are typically 110Vac/60Hz or 230Vac/50Hz.

Note: The table above details specific combinations for voltage, frequency, and power saving mode selection.

LED Status Indicators

The front panel LEDs provide status information:

Normal Work:

DC Input Levels:

Load Levels:

Abnormal Status:

LED Indicators: Light = Steady light, Light off = Off, Flash = Flashing.

Mechanical Specification

Dimensions are in millimeters (mm) with a tolerance of ±1mm.

Overall Dimensions: 210mm (Length) x 130mm (Width) x 55mm (Height).

DC Input Side: Features a chassis bonding lug and DC input terminals (+/-). A warning states: "Reverse Polarity Will Damage The Unit." Includes a remote control switch (R.C SW).

AC Output Side: Shows different AC output socket types (Type-EU, Type-US, Type-CN, Type-UN) with their respective terminal layouts.

R.C Connector: Uses JST B-XH or equivalent for remote control.

• Remote Control Pin Configuration:
• Pin 1,2 Open: Normal work
• Pin 1,2 Short: Remote off

Mating Housing: JST XHP or equivalent.

Terminal: JST SXH-001T or equivalent.

Accessory List

The following accessories may be available:

Note: Carry handle is an optional accessory. The power inverter and pull handle should be ordered separately.

Typical Application Scenarios

The NTS-300 inverter is versatile and can be integrated into various systems:

1. Household Application:

Depicts a house powered by a battery bank and the NTS series inverter, providing AC power to household appliances like a fan and TV. It implies integration with solar power or other DC sources.

2. Marine Application:

Illustrates a yacht system where the NTS series inverter is used. It shows utility input (shore power), an AC/DC battery charger, a battery bank, and the inverter supplying AC power to onboard equipment.

3. RV Application:

Shows a recreational vehicle (RV) equipped with an AC/DC battery charger, a battery bank, and the NTS series inverter to provide AC power for various appliances and systems within the vehicle.

Installation Manual

For detailed installation instructions, please refer to the official MEAN WELL website:

http://www.meanwell.com/manual.html