BWR2 WTI Gauge for Oil-Immersed Transformer Temperature Monitoring
The BWR2 WTI gauge is used where oil-immersed transformers require local winding temperature indication, cooling control, signal alarm and trip protection. It helps operators monitor transformer thermal condition and supports safer operation under changing load conditions.
For transformer projects requiring remote display or signal transmission, the BWR2 winding temperature indicator can be configured with optional output and digital temperature display according to the selected model.
How the BWR2 Transformer Winding Temperature Indicator Works
The BWR2 transformer winding temperature indicator works by thermal simulation. The temperature bulb is installed in the compound transmitter, and the compound transmitter is inserted into the thermometer pocket on the top oil area of the transformer tank.
When the transformer operates without load, the indicated value reflects transformer oil temperature. When the transformer is loaded, the current signal from the transformer current transformer is adjusted by the compound transmitter and converted into additional heating on the sensing element. The final indicated value represents the combined effect of transformer top oil temperature and load-related winding temperature rise.
This working principle makes the product suitable for traditional transformer winding temperature indication, transformer cooling control, alarm contact output and over-temperature protection.
Key Functions of BWR2 Transformer Winding Temperature Controller
- Winding temperature indication for oil-immersed transformers
- Transformer top oil temperature and load-current thermal simulation
- Adjustable switch contacts for alarm, cooling control and trip protection
- Optional signal output for remote temperature indication
- Optional digital temperature display for remote display and signal control
- Suitable for transformer control cabinets and transformer temperature monitoring panels
- Designed for transformer cooling system control and over-temperature protection
BWR2 Winding Temperature Indicator Model Selection Guide
The BWR2 transformer winding temperature indicator can be selected according to switch quantity, output signal and special environmental application requirements. The model code helps define the configuration for transformer temperature indication, signal output and field environment.
| Elemento del Código Modelo | Código | Significado |
|---|---|---|
| Series de productos | BWR2 | Transformer winding temperature controller / winding temperature indicator series |
| Cantidad de interruptores de control | Configurado según las necesidades | Cantidad de contactos del interruptor seleccionada de acuerdo con los requisitos del proyecto |
| Código de función | A | Salida Pt100 |
| Código de función | J | Salida de 4-20 mA, tipo de dos hilos |
| Código Especial de Medio Ambiente | TH | Adecuado para zonas tropicales húmedas |
| Código Especial de Medio Ambiente | TA | Adecuado para zonas tropicales secas |
| Código Especial de Medio Ambiente | T | Adecuado para zonas tropicales secas y húmedas |
BWR2 Transformer WTI Gauge Technical Specifications
| Nombre del producto | Indicador de temperatura de los devanados del transformador |
|---|---|
| Series de productos | BWR2 Series |
| Solicitud | Indicación y control de la temperatura de los devanados de transformadores sumergidos en aceite |
| Temperatura ambiente de funcionamiento | -40°C to +65°C |
| Humedad relativa | ≤95% a 25 °C |
| Rango de medición | 0°C to 160°C |
| Precisión | Clase 1.5; error máximo permitido en el punto de detección: ±2,4 °C |
| Contactos del interruptor | 4 adjustable switch contacts |
| Potencia nominal del interruptor | CA 220 V / 5 A |
| Longitud capilar | Según el último grupo de dígitos del número de instrumento |
| Grado de protección | IP55 |
BWR2 Compound Transmitter for Transformer Winding Temperature Control
The compound transmitter is an important part of the BWR2 transformer winding temperature indicator. It receives the current signal from the transformer current transformer and works with the temperature sensing element to simulate winding temperature rise under load.
This configuration allows the winding temperature indicator to provide local temperature indication and control signals for transformer cooling, alarm and protection circuits.
| No. | Nombre del componente |
|---|---|
| 1 | Current Transformer |
| 2 | Transmitter |
| 3 | Heating Element |
| 4 | Temperature Sensing Element |
| 5 | Tubo capilar |
| Componente | Compound Transmitter |
|---|---|
| Temperatura ambiente de funcionamiento | -40°C to +65°C |
| Humedad relativa | ≤95% a 25 °C |
| Señal de entrada | Transformer CT secondary current, 0.5A to 5.0A |
| Señal de salida | Pt100 platinum resistance signal |
| Tamaño del bulbo de temperatura | Φ18 × 150 mm |
| Rosca de montaje | M27 × 2 mm |
| Grado de protección | IP55 |
BWR2 Winding Temperature Indicator Dimensions and Structure
The BWR2 winding temperature indicator and compound transmitter are supplied with mechanical dimension drawings for transformer side-wall installation, thermometer pocket installation and capillary tube routing. Please confirm the final product drawing before transformer body design, panel design or site installation.
| No. | Nombre del componente | No. | Nombre del componente |
|---|---|---|---|
| 1 | Puntero de ajuste del contacto del interruptor | 7 | Cable Entry Hole |
| 2 | Puntero indicador de temperatura | 8 | Compound Transmitter |
| 3 | Puntero de registro de la temperatura máxima | 9 | Perno de sellado |
| 4 | Perilla de reinicio del indicador de grabación máxima | 10 | Tornillo de montaje |
| 5 | Perilla de ajuste a cero | 11 | Bulbo de temperatura / Sensor de temperatura |
| 6 | Orificio de entrada de cable para conector de manguera recubierta de plástico de Φ16 | 12 | Tubo capilar recubierto con una manguera de acero inoxidable |
Adjustable Switch Contacts for Transformer Alarm and Cooling Control
The BWR2 winding temperature indicator includes adjustable switch contacts that can be used for transformer signal alarm, cooling control and over-temperature trip protection. The contact settings can be configured according to transformer operation and protection requirements.
| Contacto de interruptor | Configuración predeterminada de fábrica | Uso típico |
|---|---|---|
| K1 | 50°C | Configurado de acuerdo con los requisitos del proyecto |
| K2 | 75°C | Configurado de acuerdo con los requisitos del proyecto |
| K3 | 100 °C | Configurado de acuerdo con los requisitos del proyecto |
| K4 | 120°C | Configurado de acuerdo con los requisitos del proyecto |
BWR2 WTI Gauge Wiring Diagram Overview
The BWR2 transformer winding temperature controller supports wiring for control switch output, CT current input and Pt100 signal output according to the selected model and actual product wiring diagram.
| Elemento de cableado | Función |
|---|---|
| K1 / K2 / K3 / K4 | Terminales de salida del interruptor de control |
| CT Input | Transformer current transformer secondary current input |
| Salida Pt100 | Salida de señal de temperatura por resistencia de platino |
Optional Digital Temperature Display for BWR2 WTI Gauge
The optional digital temperature display can be used together with the BWR2 transformer winding temperature indicator for remote temperature indication, signal transmission and signal control. It is suitable for transformer control panels, remote monitoring cabinets and centralized temperature display applications.
| Accesorio | Pantalla digital de temperatura |
|---|---|
| Temperatura ambiente de funcionamiento | De -10 °C a +50 °C |
| Humedad relativa | ≤85% |
| Fuente de alimentación | CA/CC 100–265 V, 50–60 Hz |
| Señal de salida | Corriente analógica de 4 a 20 mA, comunicación RS485 |
| Tipo de pantalla | Pantalla digital de tubo |
| Precisión | Clase 1.0 |
Digital Temperature Display Model Selection for BWR2 WTI Gauge
La pantalla digital de temperatura opcional puede seleccionarse según la señal de entrada, la fuente de alimentación de trabajo, la cantidad de relés y la función opcional de salida o comunicación. Se utiliza para la indicación remota de temperatura, la transmisión de señales y la salida de control en paneles de monitoreo de transformadores.
| Elemento de selección | Código | Significado |
|---|---|---|
| Tipo de producto | BWX | Pantalla digital de temperatura |
| Señal de entrada | A | Entrada Pt100 |
| Señal de entrada | B | Entrada de 4-20 mA, tipo de dos hilos |
| Fuente de alimentación en funcionamiento | 2 | CA 220 V |
| Fuente de alimentación en funcionamiento | 5 | CA/CC 100–264 V |
| Cantidad de relés | 0 / 1 / 2 | 0: ninguno; 1: un relé; 2: dos relés |
| Función opcional | E | Salida de 4-20 mA |
| Función opcional | F | Función de comunicación RS485 |
Dimensiones de instalación del display digital de temperatura
The optional digital temperature display is designed for embedded panel installation. It can be mounted into the reserved opening of the control panel for remote winding temperature indication and signal control.
| Método de instalación | Instalación empotrada |
|---|---|
| Tamaño de la abertura del panel | 153 × 77 mm |
| Dimensiones totales | 160 × 80 × 120 mm |
Installation Overview for BWR2 Transformer Winding Temperature Indicator
The BWR2 transformer winding temperature indicator should be installed vertically on the transformer body. The temperature bulb should be inserted into the thermometer pocket filled with transformer oil, and the capillary tube should be properly fixed during installation.
...
| Elemento de instalación | Requisito |
|---|---|
| Instalación del indicador | Se fija verticalmente a la pared lateral del transformador con 3 tornillos M6 |
| Instalación del bulbo de temperatura | El compartimento del termómetro debe llenarse con aceite para transformadores antes de la instalación |
| Posición del bulbo de temperatura | El bulbo de temperatura debe insertarse hasta el fondo del compartimento del termómetro y fijarse |
| Fijación de tubos capilares | El tubo capilar debe fijarse correctamente cada 300 mm |
| Tubo capilar adicional | El tubo capilar sobrante debe enrollarse con un diámetro superior a 200 mm y fijarse adecuadamente |
| Sección de cables de conexión | Se recomienda una sección transversal del cable de 2,5 mm² |
Applications of BWR2 Transformer Winding Temperature Indicator
The BWR2 transformer winding temperature indicator is suitable for oil-immersed transformer temperature indication, transformer cooling control and over-temperature protection applications. It can be used in transformer substations, industrial power distribution systems, power plants and transformer control cabinets.
- Transformadores de potencia sumergidos en aceite
- Transformer cooling control systems
- Transformer temperature alarm and trip circuits
- Paneles de monitoreo de transformadores de subestaciones
- Gabinetes de control para transformadores
- Aplicaciones de indicación remota de temperatura y transmisión de señales
WTI Gauge vs Fiber Optic Winding Temperature Monitoring
A traditional WTI gauge indicates simulated winding temperature based on transformer oil temperature and load-current thermal simulation. It is suitable for transformer winding temperature indication, cooling control and alarm protection.
Fiber optic winding temperature monitoring is different. It uses fiber optic temperature sensors installed near the winding area for direct hot spot temperature measurement. For transformer projects that require direct winding hot spot measurement, fiber optic temperature monitoring can be considered together with traditional WTI temperature indication.
| Artículo | Medidor BWR2 WTI | Fiber Optic Winding Temperature Monitoring |
|---|---|---|
| Método de medición de la temperatura | Thermal simulation | Direct optical temperature measurement |
| Uso típico | Local indication, alarm, cooling control and trip protection | Direct winding hot spot monitoring |
| Posición de instalación | Bolsillo y pared lateral del termómetro del transformador | Near winding hot spot measurement points |
Frequently Asked Questions About BWR2 Transformer Winding Temperature Indicator
What is a BWR2 transformer winding temperature indicator?
The BWR2 transformer winding temperature indicator is a WTI gauge used for oil-immersed transformer winding temperature indication, cooling control, alarm output and over-temperature protection.
What does WTI mean in transformer temperature monitoring?
WTI means winding temperature indicator. In transformer applications, it is commonly used to indicate simulated transformer winding temperature and provide control signals for transformer cooling and protection systems.
How does the BWR2 WTI gauge indicate winding temperature?
The BWR2 WTI gauge uses top oil temperature and load-current thermal simulation. The compound transmitter adds load-related temperature rise to the sensing element, allowing the indicator to show simulated transformer winding temperature.
Can the BWR2 winding temperature indicator support remote display?
Yes. The BWR2 transformer winding temperature indicator can be used with an optional digital temperature display for remote indication, signal transmission and control output according to the selected configuration.
What is the difference between a WTI gauge and fiber optic hot spot monitoring?
A WTI gauge uses thermal simulation, while fiber optic hot spot monitoring directly measures temperature at selected winding measurement points. The two methods can serve different transformer monitoring requirements.
¿Dónde está instalado el bulbo de temperatura?
The temperature bulb is installed in the compound transmitter, and the compound transmitter is inserted into the thermometer pocket on the top oil area of the transformer tank.
Request BWR2 Transformer Winding Temperature Indicator Configuration
For project selection, please provide the transformer type, required output signal, switch contact requirement, remote display requirement and installation environment. INNOFZ can help select a suitable BWR2 winding temperature indicator configuration for your transformer temperature monitoring application.
