Send Message
Home /About Us/

Shenzhen Veikong Electric Co., Ltd. Quality Control

Company Development
2020

Annual sales of inverter has increased 45% than last year.

2019

Invest 400,4000 US dollars to expand RD team,.

automatic testing machine and production line.

2018

Became the TOP5 Chinese vfd brand.

2016

Overseas Sales Department was established.

2013

Established vfd manuafacturing factory to develop the domestic business.

img
img

CERTIFICATES & HONORS

  • Shenzhen Veikong Electric Co., Ltd.Shenzhen Veikong Electric Co., Ltd.
    Standard:ISO9001
  • Shenzhen Veikong Electric Co., Ltd.Shenzhen Veikong Electric Co., Ltd.
    Standard:VFD500 CE
  • Shenzhen Veikong Electric Co., Ltd.Shenzhen Veikong Electric Co., Ltd.
    Standard:VFD500 ROHS
  • Shenzhen Veikong Electric Co., Ltd.Shenzhen Veikong Electric Co., Ltd.
    Standard:VFD500-PV CE
QC PROFILE
Shenzhen VEIKONG Electric Co.,Ltd keep following ISO9001 standard to manager and supervise quality. All our products have passed CE certification and other technical approval.
Here is our Production Flow Chart:
Shenzhen Veikong Electric Co., Ltd. quality control 0
Product quality test report:
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