Audited Supplier
LON8000
Two Years
Two Years
Linkelec
Made in China
Product Description
Intelligent temperature controller for dry-type transformer
1.Product profile
The intelligent temperature controller for dry-type transformers consists of two circuits: a temperature monitoring system and an output control system. The temperature monitoring system uses a microcontroller as the central processing unit, combined with other circuits, to complete temperature measurement, display, and corresponding signal output. The output control system completes the control output and various status alarms and outputs of the cooling fan. In the temperature monitoring system, in order to achieve remote computer monitoring, the system uses RS-485 communication to transmit temperature data and parameters to a remote computer to form a distributed control system.This product is a new generation controller designed specifically for the safe operation of dry-type transformers, which can simultaneously monitor the three-phase temperature of the dry-type transformer and control the fan. It has functions such as temperature over limit alarm, high temperature trip, sensor abnormality, and fan disconnection alarm, which can better ensure the safe and efficient operation of unmanned power supply systems. This product has the characteristics of strong environmental adaptability, high precision, small size, long service life, easy installation, and easy use.
The product is mainly used for temperature monitoring and fan control of dry-type transformers in power distribution systems. It can be widely used in distribution rooms with dry-type transformers, box type transformers, and other occasions.
2.Product specifications
| performance parameters | performance indicators | |
| 3-channel external temperature sensor probe temperature measurement | Temperature range | 0~200°C |
| Precision | 1%FS | |
| Operating power supply | operating voltage range | 220VAC(±20%)/50HZ(±4%) |
| Power consumption | 6W | |
| Communication | interface type | RS485 |
| address range | 1 to 247, where 0 is the broadcast address and 255 is the wildcard address | |
| Baud rate | 2400~9600bps | |
| Statute | Modbus-RTU | |
| transmission distance | 1KM | |
| environmental conditions | Operating Temperature | -25ºC~+70ºC |
| Operating humidity | 0~93%RH | |
3.Selection specifications
| function module | Serial number | function point | function point descriptions | Intelligent temperature controller for dry-type transformers |
| LON8000 | ||||
| real-time measurements | 1 | Winding temperature measurement | Up to 3 external temperature sensor probes can be accessed to measure 3 temperatures. | √ |
| Temperature imbalance | 2 | Temperature imbalance | Calculating the three-phase temperature imbalance, the | √ |
| cooling fan control | 3 | control mode | manually activating the fan | √ |
| 4 | automatic fan activation | √ | ||
| Cabinet door opening and closing monitoring | 5 | Cabinet door opening and closing monitoring | Cabinet door opening and closing monitoring, monitoring of open door alarm, switching input. | √ |
| Alarm | 6 | Over-temperature alarm | When the temperature value monitored by the device can not be reduced under the cooling of the fan, and rises to the set point of "over-temperature alarm", the over-temperature alarm signal is activated, and the over-temperature indicator light is on, until the temperature drops to the "alarm return point" (the difference between the alarm point and the return difference), then the alarm signal is canceled and the indicator light goes out. When the temperature drops to the "alarm return point" (the difference between the alarm point and the return difference), the alarm signal will be lifted and the over-temperature indicator will go out. | √ |
| 7 | High temperature trip alarm | When the temperature value monitored by the device reaches the "over-temperature alarm point", it will not be effectively controlled and will rise to the set "high temperature trip action point", and after a delay, it will activate the "high temperature trip" signal, and the trip indicator will light. After a delay time, the "high temperature trip" signal will be activated and the trip indicator light will be on. And through the trip function to stop the operation of the equipment to prevent equipment damage. | √ | |
| 8 | Fault Alarm | If the temperature sensor is abnormal (short-circuit or disconnection), the corresponding fault indicator lights up and the "Fault Alarm" relay operates. The output of the "Fault Alarm" relay is energized and closed. | √ | |
| event logging | 9 | SOE event logging | Record the over-temperature alarm; | √ |
| Three-phase temperature imbalance record; | ||||
| The best-value record | The maximum and minimum values are recorded | √ | ||
| Communications | 10 | means of communication | RS485 | √ |
| 11 | communication protocols | Modbus-RTU | √ | |
| 12 | mailing address | 1~247, 0 is the broadcast address,255 is the wildcard address | √ | |
| 13 | the communication baud rate | 2400 bps,4800bps,9600bps | √ | |
| control parameter settings | 14 | temperature setting range | 0~200°C | √ |
| 15 | The return difference, the | 5~20°C | √ | |
| 16 | Trip delay | 1 to 60 seconds | √ | |
| control and signal output | 17 | fan control | Active contact output (normally open) 16A/220VAC for direct drive of single-phase fans | √ |
| 18 | Over-temperature warning | Passive contact output (normally open) 5A/220VAC, 10A/28VDC | √ | |
| 19 | High-temperature tripping | Passive contact output (normally open) 5A/220VAC, 10A/28VDC | √ | |
| 20 | Fault Alarm | Passive contact output (normally open) 5A/220VAC, 10A/28VDC | √ | |
| Data zeroing | 21 | Data zeroing | The stored data is completely erased | √ |
| Note: "√" indicates that this function is standard, "○" indicates that this function is optional | ||||
4.Product installation and schematic diagram
5.About our service * We could provide 7* 24-hour phone call after-sales service.
* We provide a 2-year guarantee time and will change the meter for you within 1 year if there's something wrong with the product. Except for natural disasters or man-made reasons.
* Recommend the most advanced application technology and management model in the industry to customers, and provide customers with detailed solutions.
6.Package and ship
