Yueqing Keldan Technology Co., Ltd. manufactures heavy-duty pure sine wave inverters featuring low total harmonic distortion (THD < 3%), delivering electricity identical to or cleaner than utility grid power. Built on multi-stage high-frequency pulse-width modulation (PWM) topologies and protected by independent MCU architectures, our inverters guarantee seamless operation for sensitive loads including medical equipment, telecommunications, refrigeration compressors, precision instruments, and audio hardware.
Standard DC inputs accommodate 12V, 24V, and 48V battery banks with single-phase output configurations for 110V/120V (60Hz) or 220V/230V/240V (50Hz/60Hz). Every unit incorporates comprehensive multi-point fault protections: low voltage alarm/shutdown, over-voltage cutoff, thermal shutdown, overload cut-off, and output short-circuit protection with automatic recovery.
| Model Series | Continuous Power | Surge Rating | DC Input | AC Output | Efficiency |
|---|---|---|---|---|---|
| OPIP-300W / 500W | 300W – 500W | 600W – 1000W | 12V / 24V DC | 110V / 220V ±5% | > 90% |
| OPIP-800W / 1000W | 800W – 1000W | 1600W – 2000W | 12V / 24V / 48V DC | 110V / 220V ±5% | > 91% |
| OPIP-1500W / 2000W | 1500W – 2000W | 3000W – 4000W | 12V / 24V / 48V DC | 110V / 220V ±3% | > 92% |
| OPIP-3000W / 4000W | 3000W – 4000W | 6000W – 8000W | 24V / 48V DC | 110V / 220V ±3% | > 93% |
| OPIP-5000W / 6000W | 5000W – 6000W | 10000W – 12000W | 48V / 96V DC | 110V / 220V ±3% | > 94% |
Every pure sine wave inverter manufactured by Yueqing Keldan Technology Co., Ltd. undergoes strict quality inspections spanning SMT placement, AOI optical inspection, manual debugging, and 100% full-load burn-in aging.
Yueqing Keldan Technology Co., Ltd. provides comprehensive OEM/ODM services for engineering teams and international distributors.