Đồng hồ đo nhiệt độ dầu máy biến áp, WTZK-03, WTZK-02

1. Purpose and Principle

WTZK-02 temperature controller (BWY-02 temperature controller), suitable for measuring transformer oil temperature or other liquid, gas and vapor temperature, and can send out contact signals when the measured temperature reaches or exceeds the set value . This instrument is mainly used for the measurement and control of transformer oil temperature above 500KVA. The main structure of the controller is composed of a temperature bulb (temperature sensing probe) capillary and elastic elements. The sealing system composed of these three components is filled with temperature-sensitive medium. When the measured temperature changes, the liquid pressure in the temperature bulb changes accordingly. The transmission of the capillary tube causes the elastic element of the meter to produce a corresponding The amount of displacement, this displacement can indicate the measured temperature after being mechanically amplified, and drive the micro switch to output a signal.

2. Main technical parameters

1. Measuring range: 0~100℃, 40-100

2. Indication accuracy: 1.5 level

3. Switching characteristics

(1) Switch setting accuracy: ±3℃

(2) Switch difference: 6±2℃

(3) Switch rated load: AC220V, 1.5A

4. Temperature bulb size: ф14×150

5. Temperature bulb installation size: external thread M27×2

6. Mounting size of meter head: 3 holes ф6 144×210

7. The standard setting value of the switch when the instrument leaves the factory: the first upper limit is 55℃, the second upper limit is 80℃

If the user needs to adjust the switch setting value, he can open the cover, turn the knob on the dial to set the needle, and then close the cover as it is.

Three, installation and use

1. Temperature setting: Open the meter cover and turn the knob to set the needle (generally no need to set it again).

2. Wiring: Open the meter cover, pass the cable through the lead contact, and wire as shown in Figure 2. It is recommended to use KW4×1.5 control cable for the cable.

Tighten the nut at the lead connector after wiring, and not loosen it. Close the cover as it is, and tighten the four screws evenly.

Before installing the thermostat head, the installation, wiring and switch setting should be completed.