Annual sales of inverter has increased 45% than last year.
Invest 400,4000 US dollars to expand RD team,.
automatic testing machine and production line.
Became the TOP5 Chinese vfd brand.
Overseas Sales Department was established.
Established vfd manuafacturing factory to develop the domestic business.
| Table 1.overvoltage and undervoltage check,output voltage imbalance. | ||||||||
| No | Model | Input voltage/hz | Output current | Actual output voltage | Remark | |||
|---|---|---|---|---|---|---|---|---|
| U-W | U-V | V-W | ||||||
| 1 | VFD500 45KW | 403.7/25 | 27.2 | 203 | 203 | 203 | ||
| 402.3/50 | 27.9 | 385 | 385 | 385 | ||||
| 2 | VFD500 55KW | 403.7/25 | 27.3 | 206 | 205 | 205 | ||
| 401.3/50 | 28.9 | 388 | 388 | 388 | ||||
| 3 | VFD500 75KW | 402.1/25 | 27.8 | 207 | 207 | 207 | ||
| 401.4/50 | 391 | 391 | 391 | 391 | ||||
| 4 | VFD500 90KW | 402.8/25 | 27.7 | 206 | 206 | 206 | ||
| 402.7/50 | 29.5 | 391 | 391 | 391 | ||||
| 5 | VFD500 110KW | 402.9/25 | 27.1 | 206 | 205 | 205 | ||
| 402.7/50 | 28.8 | 389 | 389 | 389 | ||||
| 6 | VFD500 132KW | 402.7/25 | 26.6 | 204.7 | 204 | 204 | ||
| 402.7/50 | 29.5 | 387 | 387 | 387 | ||||
| Table 2.Checking the accurcy of the inverter ammeter readings adn current imbalance. | ||||||||
| MODEL | Clamb current | Average | Current on dispaly |
The difference between the clamp meter and the meter on the device(automatically calculated) |
Remark | |||
|---|---|---|---|---|---|---|---|---|
| U | V | W | ||||||
| VFD500 45KW | 94 | 94 | 94 | 94.00 | 96 | 2.13 | ||
| VFD500 55KW | 105 | 105 | 104 | 104.67 | 108 | 3.18 | ||
| VFD500 75KW | 118 | 118 | 118 | 118.00 | 122 | 3.39 | ||
| VFD500 90KW | 122 | 122 | 122 | 122.00 | 124 | 1.64 | ||
| VFD500 110KW | 126 | 126 | 126 | 126.00 | 128 | 1.59 | ||
| VFD500 132KW | 135 | 135 | 135 | 135.00 | 140 | 3.70 | ||
| Table 3.Checking overload protection. | ||||||
| Power adn voltage | Overload,% and actuation time | Remark | ||||
|---|---|---|---|---|---|---|
| 120(60)120% overload,the load must be disconnected within 60 seconds | 145(10) | 160(1) | ||||
| Protection operation time,t s / A overload | ||||||
| Model | / | / | / | |||
| VFD500 45KW | 55 | 5 | 0 | |||
| VFD500 55KW | 56 | 7 | 0 | |||
| VFD500 75KW | 55 | 9 | 0 | |||
| VFD500 90KW | 55 | 6 | 0 | |||
| VFD500 110KW | 55 | 5 | 0 | |||
| VFD500 132KW | 58 | 6 | 0 | |||
