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BWDK-S 系列干式变压器温度控制仪

发布时间:2019-09-25 人气:47

      BWDK-S 系列干式变压器温度控制仪是由微处理器构成的智能仪器,它使用三只铂电阻作传感器,测量干式变压 器三相绕组的温度。根据设定的温度值,启停风机进行温度控制。仪器具有各种声光报警功能,是保护干式变压器的 重要装置。 BWDK-S series of dry-type transformer temperature controller is an intelligent instrument equipped with a microprocessor. It uses three platinum resistances as sensors to measure the temperature of three-phase windings of the dry-type transformer, and start and stop the fan for temperature control according to preset temperature value. With various sound and light alarm functions, the instrument is an important device for protecting the dry-type transformer. 

仪器符合 JB/T7631-2005 标准。 The instrument complies with Standard JB/T7631-2005. 仪器具有以下特点: The instrument has features as follows: 

  1. 仪器可以测量干式变压器三相绕组的温度,用 LED 每隔 4 秒循环显示三相温度值或定点显示三相温度最大值。 It is capable of measuring the temperature of three-phase windings of the dry-type transformer, displaying in turn three-phase temperature values with a LED every 4 seconds or displaying the highest three-phase temperature periodically.

  2. 2. 仪器可以用按键输入 4 种温度设定值。当测量温度超过各设定值时,分别控制风机启停、超温报警、超高温跳闸等。 温度设定值可以随时修改,断电后不会消失。 Four preset temperature values can be input by keystroke. When the measured temperature exceeds preset values, the instrument will respectively control startup and stop of the fan, over-temperature alarm, ultra-high temperature trip, etc. The preset temperature values can be modified at any time, and will remain after the instrument is switched-off.

  3. 3. 仪器具有传感器断线故障检测功能。 The instrument is capable of detecting the broken-line fault of the sensor.

  4. 4. 仪器具有风机依设定温度自动定时启动和手动启动功能。仪器可设定 1-250 小时内自动启动风机 1 分钟。 The instrument has the function of automatic timing startup and manual startup according to the preset temperature, and can set automatic fan startup for 1 minute within 1-250 hours. 5. 仪器具有温度历史最大值记录功能。 The instrument is capable of remembering the highest temperature ever occurred.

  5. 6. 根据使用需要,仪器可以提供数字量或模拟量输出。 The instrument is capable of providing digital or analog output as required.

  6. 7. 仪器面板上有绿色的状态指示灯,风机运转指示灯为黄色,而超温、故障和跳闸状态指示灯为红色。 There is a green status indicator light on the instrument panel. The indicator light turns yellow when the fan operates and turns red at the status of over-temperature, fault and trip.

    二、技术特性 Technical specifications

  7. 1. 仪器连续工作环境:温度:0 ~ 50℃;相对湿度:小于 90%RH(25℃)。 Conditions for continuous operation of the instrument: Temperature: 0 ~ 50℃ , relative humidity: less than 90%RH(25℃). 短时间工作环境:温度:- 50 ~ 75℃。 Conditions for short-time operation of the instrument: Temperature: - 50 ~ 75℃ .

  8. 2. 工作电源:AC220V±10%;频率 50Hz±4%。仪表保护装置 5A 熔丝。 Working power supply: AC220V±10%, frequency 50Hz±4%. A 5A fuse for the instrument protector. 3. 温度测量范围:- 50 ~ 200℃。 Temperature measurement range: - 50 ~ 200℃ .

  9. 4. 温度测量准确度:0.5 级。 Temperature measurement precision: Class 0.5. BWDK-S 干式变压器温度控制仪 Shengshang BWDK-S Dry-type Transformer Temperature Controller 使用说明书 Operation Instructions 3 5. 显示方式:LED 每隔 4 秒循环显示 A、B、C 三相温度或定点显示三相温度的最大值,分辨力为 0.1℃。 Display mode: A LED displays temperature of Phase A, B and C in turn every 4 seconds, or displays the highest three-phase temperature periodically, with resolution being 0.1℃ . 6. 输出方式:输出报警、跳闸和传感器故障,继电器接点容量 AC250V/10A。 Output mode: Output alarm, trip and sensor fault. Relay contact capacity is AC250V/10A.

  10. 7. 启动风机:控制 4 ~ 6 台风机,继电器接点总容量 AC250V/30A。 Fan startup: Control 4-6 fans, and total relay contact capacity is AC250V/30A. 8. 耐压实验:2500VAC、60Hz、60 秒。 Withstanding-voltage test: 2500VAC, 60Hz and 60 seconds.

  11. 9. 外形尺寸:80(H)×160(W)×135(D)mm3 。 Dimensions: 80(H)×160(W)×135(D)mm3 .

  12. 10. 开孔尺寸:77(H)×153(W)mm2 Perforate dimensions: 77(H)×153(W)mm2 .

  13. 11. 模拟量输出:三路 4-20mA,对应 A、B、C 相温度 0-200℃,或一路 4-20mA 对应 A、B、C 相中最大值温度 0-200℃, 精度 1%±1 个字,负载电阻≤ 600Ω。 Analog output: Three-line 4-20mA output corresponds with temperature of Phase A, B and C (0-200 ℃ ), or one-line 4-20mA output corresponds with the highest temperature of 0-200℃ among Phase A, B and C. Precision is within 1%±1 and load resistance is ≤ 600Ω.

  14. 12. 数字量输出:RS232 或 RS485 串行通讯接口,采用 Modbus 通讯协议。 Digital output: RS232 or RS 485 serial communication interface, with Modbus Communication Protocol being adopted.


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