Q
Why is your quotation higher than other suppliers?
A
In the domestic market, high and low inverter brands are mixed together. There are many low-cost inverters produced by assembled small unlicensed workshops. They crudely reduce costs by using substandard components for assembly, which presents a very big security risk! In order to protect personal and property safety, please do not covet low prices, and be sure to choose a reliable inverter!
Q
How many categories does it have according to the output waveform?
A
According to the output waveform, there are two main categories:
Type one: JYM Modified Sine Wave inverter, which uses PWM pulse width modulation to generate modified sine waves. Due to the usage of intelligent dedicated circuits and high-power field effect tubes, it greatly reduces power loss and adds a soft-start function, effectively ensuring the reliability of the inverter. If power quality is not highly demanded, it is able to meet the needs of most electrical equipment. However, 20% harmonic distortion issues remain when running sophisticated equipment, which can also cause high-frequency interference to radio communications equipment. This kind of inverter meets basic power needs with high efficiency, low noise, and a moderate price, making it a mainstream product in the market.
Type two: JYP Pure Sine Wave inverter, which adopts an isolated coupling circuit design. It features high efficiency, high stability of the output waveform, and high-frequency technology in a small size. Suitable for all kinds of loads, it can be connected to any common electrical devices and inductive load devices (such as refrigerators, electric drills, etc.) without any interference (e.g., buzz and TV noise). The output of a pure sine wave inverter is the same as, or even better than, the grid tie power we use daily, as it does not present grid tie electromagnetic pollution.
Q
Is the output voltage of our inverter stable?
A
Absolutely. Our inverter is designed with a good regulator circuit. You can verify this when measuring the true value with a multimeter. The output voltage is quite stable. Note: many customers believe it is unstable when using conventional multimeters to measure voltage. This is because ordinary multimeters can only test pure sine waveforms properly and calculate values correctly; otherwise, the reading may be incorrect.
Q
What are resistive load appliances?
A
Generally speaking, appliances like mobile phones, computers, LCD TVs, incandescents, electric fans, video broadcasts, small printers, electric mahjong machines, and rice cookers all belong to resistive loads. Our modified sine wave inverters can drive them successfully.
Q
What are inductive load appliances?
A
It refers to appliances applying the electromagnetic induction principle, produced by high-power electrical products such as motor-types, compressors, relays, fluorescent lamps, electric stoves, refrigerators, air conditioners, energy-saving lamps, and pumps. These products' startup power is far greater than their rated power (about 3-7 times). Therefore, only pure sine wave inverters are suitable for them.
Q
What should be noticed when installing the inverter?
A
Place the product in a location that is well-ventilated, cool, dry, and waterproof. Please do not place heavy stress or foreign objects on the inverter. Remember to turn on the inverter before turning on the connected appliances.
Sowest Electric
