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Intelligent Temperature Controller for Dry-Type Transformer¹

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Product Description Intelligent temperature controller for dry-type transformer1.Product profileThe 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 specificationsperformance parametersperformance indicators3-channel external temperature sensor probe temperature measurementTemperature range0~200°CPrecision1%FSOperating power supplyoperating voltage range220VAC(±20%)/50HZ(±4%)Power consumption6WCommunicationinterface typeRS485address range1 to 247, where 0 is the broadcast address and 255 is the wildcard addressBaud rate2400~9600bpsStatuteModbus-RTUtransmission distance1KMenvironmental conditionsOperating Temperature-25oC~+70oCOperating humidity0~93%RH3.Selection specificationsfunction moduleSerial numberfunction pointfunction point descriptionsIntelligent temperature controller for dry-type transformersLON8000real-time measurements1Winding temperature measurementUp to 3 external temperature sensor probes can be accessed to measure 3 temperatures.√Temperature imbalance2Temperature imbalanceCalculating the three-phase temperature imbalance, the√cooling fan control3control modemanually activating the fan√4automatic fan activation√Cabinet door opening and closing monitoring5Cabinet door opening and closing monitoringCabinet door opening and closing monitoring, monitoring of open door alarm, switching input.√Alarm6Over-temperature alarmWhen 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.√7High temperature trip alarmWhen 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.√8Fault AlarmIf 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 logging9SOE event loggingRecord the over-temperature alarm;√Three-phase temperature imbalance record;The best-value recordThe maximum and minimum values are recorded√Communications10means of communicationRS485√11communication protocolsModbus-RTU√12mailing address1~247, 0 is the broadcast address,255 is the wildcard address√13the communication baud rate2400 bps,4800bps,9600bps√control parameter settings14temperature setting range0~200°C√15The return difference, the5~20°C√16Trip delay1 to 60 seconds√control and signal output17fan controlActive contact output (normally open) 16A/220VAC for direct drive of single-phase fans√18Over-temperature warningPassive contact output (normally open) 5A/220VAC, 10A/28VDC√19High-temperature trippingPassive contact output (normally open) 5A/220VAC, 10A/28VDC√20Fault AlarmPassive contact output (normally open) 5A/220VAC, 10A/28VDC√Data zeroing21Data zeroingThe stored data is completely erased√Note: "√" indicates that this function is standard, "○" indicates that this function is optional 4.Product installation and schematic diagram5.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

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