TM1. Temperature Monitor - TM1

Transcription

1 Temperature Monitor - TM1 The Temperature Monitor, TM-1 is the latest generation of the widely applied temperature monitor MT1. Updated with all the experience acquired by Tree Tech over the last 6 years and 2000 plus monitor installations, the TM1 is on technologies cutting edge. The TM-1 replaces the mechanical winding and oil thermometers used in oil-filled transformers and reactors with all the advantages of microcontroller technology. The TM1 has great user flexibility. Each module can be parameterized to the specification of individual users. The system is modular, enabling the expansion of the number of measured winding by cooperation with a temperature monitor TM2 (see specific catalog). The TM1 and TM2 are linked via RS-485 serial communication, the units are fully compatible in connections and dimensions as there predecessors MT1 and MT2 and well as a supervision module MS. This enables the two generations of equipment to be interchangeable. Features Include: - Input for PT100 at 0 ºC sensors with self-calibration, accuracy of 0.2% of scale and high stability in wide temperature ranges. Accommodation for a 3-wire Pt100 sensor, a 4-wire Pt100 or two 3-wire Pt100 sensors. (Redundant temperature measuring and measuring validation) - One true RMS universal AC input from 0-10A, accuracy of 0.5% of scale, used to measure the load and calculate the winding temperature through the thermal imaging process. - Two high-bright LED displays to facilitate the visualization of oil and winding temperatures in all lighting conditions. - Calculation of the final gradient forecast for oil-winding temperature at the current load. - Two current outputs for remote indication of temperatures with an output band selection of (0-1mA,0-5mA, 0-10mA, 0-20mA and 4-20mA) - Two N.O. contacts (N.C. or combinations under request) for temperature alarms - Two N.O. contacts (N.C. or combinations under request) for oil and winding temperature trips, with double security provision (simultaneous sequence of 2 microcontrollers for operation). Adjustable temperature setting from 0-20 minutes with countdown display. - Two N.C. contacts for the startup of forced cooling groups. Time Delay between the startup of each group (even with power outage of TM-1) and forced operation through the self-diagnostic routines in case of module failure or voltage outage. - Cooling operation is selectable on the front panel between Automatic and Manual. Automatic rotation of the operation of the two forced cooling groups for uniform fan usage. - One N.C. contact for power outage or internal failure detected during the self-diagnostics. - Self-Diagnostic: 2 microcontrollers (reciprocal supervision), detection of temperature and current measuring failure, relay activation etc - Two RS-485 serial ports, one for connection with TM-2 if applicable and another to be used by the user for connection with Modbus RTU protocol to acquire online data, remote control and parameterization. - One RS-232 serial port to acquire online data and for parameterization through an application software provided free of charge - Total absence of mechanical parts and self-calibration through the TM-1 firmware. 01

2 Technical Characteristics Auxiliary Supply Voltage: Power Consumption: Operation Temperature: Protection Class: Fixation: Analog OutPuts: Max.Error: Options (selectable) and Maximum Load: Outputs Contacts: Type and Functions (default): Maximum switching power: Maximum switching voltage: Maximum Conduction Current: 85 to 265 Vdc/Vac 50/60Hz < 8 W -40 to +85Cº (-40 to +185 ºF) IP 40 Built-in in panel 2 for oil and winding temp. (Positive common) 0.5% scale end ma ohm ma ohm ma ohm ma ohm mA ohm Free of potential 4 NO (alarms/trips)+3 NC (2 cooling and 1 self diagnostics.) 70 W in DC / 250 VA in AC 250 Vdc/Vac 5 A Oil Temperature: Winding Temperature: Applied mathematical models: Input for Oil Temperature Measurement: Max. Error: Connection Options: AC current measurement input: Max. Error: Serial Communication ports: Communication Protocol: 1 (one) - Direct measurement RTD sensor 1 (one) - For Thermal Image (calculated) IEEE Std C IEC ABNT NBR (brazilian standard) Pt100 ohm at 0ºC with continuous self-calibration 0,2% end scale Preferential 1: 2 sensors with 3 wires (redundancy) Preferential 2: 1 sensor with 4 wires Alternative: 1 sensor with 3 wires 1 True RMS 0 to 10A 0,5% end scale 1 RS485 for connection to TM2 1 RS485 for connection to supervisory system 1 RS232 for local connection to NoteBook Modbus RTU slave (default) DNP3.0 level 1 (under consult) 02

3 Connection Diagram OPTION 1-2 SENSOR WITH 3 WIRES OPTION 2-1 SENSOR WITH 4 WIRES OPTION 3-1 SENSOR WITH 3 WIRES SENSOR 1 SENSOR 2 SENSOR TOP OIL TOP OIL TOP OIL TOP OIL FOR CONNECTION OF THE TEMPERATURE SENSORS SEE OPTIONS 1, 2 or 3 ABOVE FOR CONNECTION WITH THE TEMPERATURE MONITOR TM2 (OPTIONAL) TEMPERATURE MONITOR - TM1 RS 232 (BACK) CT FOR THERMAL IMAGE OIL TEMP. WINDING TEMP. OIL ALARM OIL TRIP COOLING. 1st GROUP COOLING. 2st GROUP WINDING ALARM WINDING TRIP SELF - DIAGNOSIS OR POWER SUPPLY FAULT ANALOG OUTPUTS (Selectable) AUXILIARY SUPPLY VOLTAGE Vdc / Vac 50/60 Hz FOR REMOTE COMPUTER OR PLC RS485 MODBUS RTU Remarks The connection options for the temperature sensor Pt100 have the following characteristics: Option 1 - Maximum safety in temperature measurement. The redundant measurement allows the detection of faults in the sensor or in connection cables. If a fault happens temperature monitoring can be maintained until a maintenance in the defective sensor is possible. Option 2 - it Allows total monitoring of the connection cables to the sensor. However internal defects in the sensor will only be detected in case of abrupt change in the measured temperature. Option 3 -Partial Monitoring of the connection cables to the sensor. Internal defects in the sensor will be detected only in case of abrupt change in the measured temperature. Therefore, it is recommended that options 1 or 2 are used, in this order. 03

4 Dimensions Front View 165 Side View TM Back View Dimensions for Panel cut-out 04

5 Accomplished Tests Surges and transients (IEC ) st Value of peak 1 cycle: Frequency: Time: Repetition rate: Decline to 50%: Impulse (IEC ) Wave form: Amplitude: Number of pulses: Energy: Insulation Voltage (IEC ) Insulation Voltage at industrial frequency : Eletromagnetic Susceptibility(IEC ) Severity Level: Frequency: Field Intensity: Electrostatics Discharges(IEC ) Air Mode: Contact mode: Fast Electrical Transients (IEC ) Severity Level: Test in power supply: Test in inputs/outputs: Climatic Test (IEC ) Temperature Range: Test Time: 2.5 kv 1.1 MHz 2 s 400 (surtos/s) 5 cycles 1.2/50 us 5 kv 3 negative e 3 positive with interval of 5 seconds between pulses. 0.5J 2.0 kvrms, 60 Hz, during 1 minute between circuits and monting panel to 2000MHz 10 V/m Level 3 (8kV) 10 Discharges Level 3 (6kV) 4 4kV 2kV -40 to +85ºC (-40 to +185ºF) 120 hours 05

6 Ordering Information Temperature Monitor - TM1 its an universal equipment, in other words, the characteristics of its inputs and outputs (CT current, output current ma) can be programmed through its front panel or through its serials ports RS232 or RS485, using the specific parametering software. Besides that, the power voltage is universal, in the range from 85 to 265Vdc/Vac 50/60Hz. For that reason, for ordering the equipment it should be specified only: thermometer for oil temperature and winding model TM-1 06

7 Tree Tech USA 685 Mosser Rd. Ste 124 McHenry, MD 2154 Phone: Fax: info@treetechusa.com Tree Tech Brasil Praça Claudino Alves, 141 Centro - Atibaia - SP - CEP Tel.:/Fax (+55 11) comercial@treetech.com.br 07