Negotiable
The date of payment from buyers deliver within days
Beijing
Long-term effective
2020-05-11 05:38
503
Company Profile
By certification [File Integrity]
Contact：hqguangdian(Mr.)
Email：
Telephone：
Phone：
Area：Beijing
Address：Beijing
Website：http://www.herchopto.com/ http://hqguangdian.lqfuerda.com/
1. Why Monitoring？
Fiber optic temperature sensors have been installed in high-voltage oil-filled transformers for over twenty years and are now considered the preferred method of transformer temperature monitoring. The benefits that fiber optic sensors offer transmission and distribution companies are finically significant.
By monitoring temperatures at each transformer winding hot spot, utilities are able to operate transformers at peak capacity, without extending into overload conditions that can dramatically reduce the life of the transformer. The insulation aging of transformers is directly related to the winding temperature during operation. Above the critical winding temperature, the lifespan of the insulation deteriorates quickly.
The conventional way of simulating hot spot temperatures through top of oil measurements and thermal modeling has proven to underestimate insulation aging. As a result, the IEC recommends direct winding measurement for design, test, loading and maintenance. To assess and optimize oil-filled transformer for short term overloading and for failure detection, direct winding temperature sensing is a must have.
2. Our solution.
The HQ-E116 type fiber optic temperature sensing & monitoring system was designed to meet the challenges. Its fiber optic temperature sensors are of extremely high di-electrical strength and can be installed directly onto windings without causing insulation or PD issues. The monitor are of upto 16 channels, can communicate directly with SCADA system through RS485 or other smart communication protocols. It also allows users to control the cooling efficiency and provide trends/alarms in real-time.
3. Product Specification
Model No. |
HQ-E116 |
Temperature Range |
-40℃-260℃ |
Temperature Accuracy |
±1℃ |
Temperature Resolution |
0.1℃ |
Number of Channels |
Upto 16 channels |
Temperature Unit |
℃ or ℉ |
Display Mode |
Digital tube display, display directly if less than 8 channels, display in turn if more than 8 channels |
Response Frequency |
2 seconds per channel (Depend on probes’ position) |
Power Supply |
24V DC |
Digital Interface |
Two RS-485 USB Analogue ouput: 4-20mA 8 relays |
Memory |
1GB memory space, flash drive (USB port) accessible |
Power Consumption |
≤10W |
Communication Protocol |
Modbus (IEC 61850 customizable) |
Fiber Optic Length |
Per requirement |
4. Installation diagram
5.User Values
● Increase safety and economic efficiency of power grid
● Enhance design and manufacture of transformers
● Allow transformers to operate overload and enlarge capacity
● Prevent transformers breakdown, increase lifetime.
6. Project Reference
http://www.herchopto.com/
