ST-VI400-12 — 400 W 12 V Pure Sine-Wave Vehicle Inverter
Pure-Sine, Grid-Stable, Efficient.
Technical Specifications
18 months from date of invoice.
Detailed Specifications
PARAMETERS
| PARAMETER | VALUE |
|---|---|
| Rated Output Power | 400 W |
| Rated Input Voltage | 11–16 Vdc |
| Nominal Battery Voltage | 12 Vdc |
| Max DC Input Current | 40 A |
| No-load Current | ≤ 600 mA |
| Output Voltage | 220 Vac ±5% |
| Output Waveform | Pure sine wave |
| Output THD | ≤ 3% |
| AC Output Frequency | 50 ±0.5 Hz |
| Efficiency | ≥ 91% |
| Overload Protection | 480 W ±40 W |
| Noise | ≤ 40 dB |
| Ingress Protection | IP5K2 / IP65 |
| Cooling | Free convection / natural cooling |
| Operating Temperature | -40 to +85 °C (derate above 50 °C) |
| Weight | < 1.6 kg |
INTERFACE
| INTERFACE | VALUE |
|---|---|
| DC Input | + / − (12 V battery, 11–16 Vdc) |
| AC Output | L / N (220 Vac pure sine) |
PROTECTIONS
| PROTECTION | DESCRIPTION |
|---|---|
| Overload | 480 W ±40 W overload protection |
| Ingress | IP5K2 / IP65 sealed die-cast enclosure |
FEATURES
| FEATURE | VALUE |
|---|---|
| Cooling | Free convection / natural cooling |
| Topology | Soft-switching for high efficiency and low EMI |
| Enclosure | Die-cast one-piece body meets vehicle-vibration requirements |
| Output waveform | Pure sine wave, THD ≤ 3% |
Additional Details
The ST-VI400-12 is a 400 W, 12 V pure sine-wave vehicle inverter that converts a 11–16 Vdc battery supply into clean 220 Vac ±5% at 50 Hz, with THD ≤ 3% and efficiency ≥ 91%. It sustains its full 400 W rating at 50 °C and draws ≤ 600 mA at no load, making it suited to in-vehicle, mobile and off-grid power applications.
A soft-switching topology delivers high efficiency with low EMI, while the die-cast one-piece body meets vehicle-vibration requirements and provides IP5K2 / IP65 ingress protection. The unit operates from -40 to +85 °C (derating above 50 °C), weighs less than 1.6 kg, and includes 480 W ±40 W overload protection.
Frequently asked questions
What is the ST-VI400-12 — 400 W 12 V Pure Sine-Wave Vehicle Inverter?
The ST-VI400-12 is a 400 W, 12 V pure sine-wave vehicle inverter that converts 12 Vdc to clean 220 Vac — a sealed IP65, die-cast body built for vehicle-vibration and harsh-environment off-grid use.
What are the key specifications of the ST-VI400-12?
Output — 400 W · 220 Vac pure-sine · 12 Vdc · ≥91% · THD ≤3% · IP65. Input — DC 11–16 Vdc (12 V) · max DC input current 40 A · no-load current ≤600 mA.
What are the ST-VI400-12's efficiency, ingress protection and operating conditions?
Peak efficiency: ≥ 91%. Operating temperature: -40 to +85 °C (derate above 50 °C). Cooling: Free convection / natural cooling.
What communication interfaces does the ST-VI400-12 support?
No communication interface; soft-switching for low EMI.
What protection features does the ST-VI400-12 include?
Built-in protections: Overload, Ingress.
What is the warranty on the ST-VI400-12?
18 months from date of invoice.
