COMPACT-复合型绕组温度计

复合型系列包括两种温度测量仪器，一种是小型的，另一种是复合型的，具备以下功能（即使是在没有额外设备的情况下）：
• 温度测量
• 温度值显示
• 报警
• 测量值的远传
此外，温度传感器较小并且适用于所有常规变压器的温度计封套和传感器模块。

绕组温度将直接被测量和计算。在绕组和冷却剂之间的温度剃度取决于在指定时间内通过绕组的电流。绕组的电流与变压器的二次电流成正比。变压器的二次电流流过指针式温度计的加热电阻器，使仪表的显示曲线（取决于每个变压器的负荷）随实际测得油温的升高而上升。通过这种间接的方法，可以测量出绕组最大温度绕组温度（= 热成像）的平均值。加热电流通过特征曲线显示并通过温度计的电位计来调节。可在工厂或由客户自行操作。

复合系列的温度计是一个带可调节的微动开关的指针温度计。机械测量可独立进行，能量自给，并在很长一段时间内保持可靠和稳定。指针温度计将被安装到变压器油箱里的温度计封套中。 这种指针温度计适用于极端恶劣的气候环境。由于带UV防曝膜的层压安全玻璃，即使是在几十年后也能清晰阅读测量结果。全封闭的压力测量室可防止灰尘和水的渗入。在整个寿命周期内完全没有必要重新调整或重新校准。

• 布尔登管，无须增加机械元件
• 封闭系统带压力元件; 防止受到外部影响，如灰尘和湿度
• 温度低至-50°C 时，对环境温度进行补偿
• 触头可多达6个
• 带信号转换器TT30 的数字输出
• 压层安全玻璃 （带UV防晒膜）

COMPACT-Winding temperature indicator

The compact series consists of two types of temperature measuring instruments which are compact and complete in themselves, providing:
• temperature measurement
• display of the measured values
• alarm messages
• remote indication of the measured values
An extra advantage is that the temperature sensors are quite small and fit in all standard transformer thermometer pockets and wells.

The temperature of the winding is measured and determined indirectly. The temperature difference between the winding and the coolant is a function of the actual current in the winding. The transformer secondary current is proportional to the current in the transformer winding. The secondary current of the transformer feeds a heating resistor in the thermometer and so produces a display reading of the transformer load, corresponding to the actual measured oil temperature(temperature gradient). This indirect method provides a display of the average or maximum winding temperature(i.e.a thermal image). The heater current is set to a characteristic curve using a potentiometer located in the dial indicating thermometer. It can be set in the factory or by the customer.

Dial indicating thermometers with adjustable microswitches. The mechanical measuring system is autonomous, energy independent and remains serviceable and stable long-term. The dial indicating thermometer is installed in the thermometer pocket in the transformer tank and provides a direct indication of the measured value.