2024年11月6日发(作者:何昆谊)
BWDK-系列
通过ISO9001:2000质量体系认证
认证号:05504Q10349ROS
变压器用电阻温度器
使用说明书
制造单位:南京超博机电设备工程有限公司
- 1 -
安 全 指 导
在安装、操作和运行本温控器前,请仔细阅读本说明书,并妥善保管。
!
警 告
只有合格的技术人员才允许操作本温控器,在进行操作前,要熟悉使用
手册中所有安全说明、安装、操作和维护规程。本温控器的正常运行取决于
正确的运输、安装、操作和维护。
1. 本温控器的输入电源为:220V,50Hz。
2. 请确保所有电气连接正确、牢固。
3. 本温控器接通电源后,请不要接触外露的带电部件。
4. 端子1、2、3、4、5、6、7、16、17带有危险电压。
5. 产品上的风机输出端子1、2、3、4、5、6与7间严禁短路。
6. 对变压器进行高压测试时,请先将温控器与变压器分离,以免损坏温控器!
!
注 意
1. 使用前请仔细阅读说明书。
2. 本温控器只能按本公司规定的目的使用。未经授权的修改和使用非本公司所
出售或推荐的零配件都可能导致本系统出故障,甚至失效。
3. 避免在含有二氧化硫(SO
2
)、硫化氢(H
2
S)或其他腐蚀性气体的大气中使
用本温控器,否则会使继电器触点失效。
4. 整机安装好后,连接好有关引线,在确定无误的情况下方可送电运行。
5. 传感器探头请勿用打火机烧烤(火焰温度在800
0
C左右)。
6. 不要在继电器输出触点上施加比最大额定值大的电压、电流。
温控器属精密仪表,请客户妥善保管和放置,如确有问题,使用说明书上或
温控器内的产品合格证上有我公司的售后服务电话,请客户直接与本公司联系,
公司将有专人负责处理,谢谢合作。同时感谢您使用本公司产品,不足之处敬请
您提出宝贵意见,以使我们以后的工作做得更好。
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一、产品概述
本仪器是为干式变压器设计的新一代电脑温度控制器,它采用先进的计算机
控制技术和数据存贮技术设计而成,且在设计中采用了硬件和软件相结合的抗干
扰措施,使产品具有了极强的抗干扰能力。本仪器能保证干式变压器在正常的温
度范围内安全地工作,是保护干式变压器的重要装置。温控器的各种控制参数只
需通过面板上几个按键的设置就可实现,而且设定的参数在停电后永不丢失。本
仪器还具有“黑匣子”功能,可记录变压器掉电时刻三个绕组的温度,以供查询。
在使用方面,本仪器具有操作简单、安装方便、维护容易的特点。
本产品符合JB/T7613-1994《变压器用电阻温度计》标准
本产品生产体系通过ISO9001质量体系认证。
二、产品型号:BWDK系列电阻温控器产品型号如下表:
型 号 功 能
巡回显示三相绕组温度,具有故障、超温、跳闸无源触点输
BWDK-3205
出,无风机控制功能。
除具有3205所有功能以外,还具有三路4~20mA模拟电流
BWDK-3205B
输出,输出三相温度的模拟量。
除具有3205所有功能以外,还具有三路1~5V模拟电压输
BWDK-3205C
出,输出三相温度的模拟量。
除具有3205所有功能以外,还具有RS232接口,同时输出
BWDK-3205D
三相温度和传感器状态数字信号。
除具有3205所有功能以外,还具有RS485接口,同时输出
BWDK-3205E
三相温度和传感器状态数字信号。
巡回显示三相绕组温度,具有故障、超温、跳闸无源触点输
BWDK-3206
出,具有4或6路风机控制功能。
巡回显示三相绕组温度,具有故障、超温、跳闸无源触点输
BWDK-3207
出,具有4或6路风机控制功能和断相报警保护功能。
除具有3207所有功能以外,还具有三路4~20mA模拟电流
BWDK-3208B
输出,输出三相温度的模拟量。
除具有3207所有功能以外,还具有三路1~5V模拟电压输
BWDK-3208C
出,输出三相温度的模拟量。
除具有3207所有功能以外,还具有RS232接口,同时输出
BWDK-3208D
三相温度、风机状态和传感器状态数字信号。
除具有3207所有功能以外,还具有RS485接口,同时输出
BWDK-3208E
三相温度、风机状态和传感器状态数字信号。
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三、技术参数
1. 测温范围: 0
0
C
—200
0
C
2. 测温精度: ±1%FS
3. 分 辨 率: 0.1
0
C
4. 工作电压: AC220V±10%(50Hz)
5. 功 耗: 5VA
6. 传 感 器: 三支Pt100铂热电阻,三支PTC热电阻(选件)
7. 继电器触点容量: 10A/250VAC
8. 仪表重量: < 3Kg
9. 外形尺寸: 260×200×80(mm)
10. 模拟量输出: 三路4-20mA电流,或三路1-5V电压
11. 数字量输出: RS232或RS485串行通信接口
四、产品功能介绍
1、 具有三相绕组温度的巡回温度显示或最高温度显示功能。
2、 可根据设定的开风机温度和关风机温度自动控制风机的开启和关闭,保证
干式变压器在正常温度下安全地工作。当三相绕组温度中的最高一相温度超过开
风机的设定温度或在手动开风机的情况下,风机会开启。
2.1 . 变压器可配用2台、4台、6台风机或不接风机。接有风机时,当风机开
启,则温控器面板上相应编号的“风机”工作指示灯变为绿色。
2.2 . 若某风机出现断相故障时,则温控器面板上该相风机工作指示灯变为红
色,同时发出蜂鸣报警声。
3、 具有超温报警功能。当三相绕组温度中的最高一相温度超温时,温控器内
发出蜂鸣报警声,同时面板上“超温”灯亮,“超温”输出端子(13、15端)输
出一个闭合开关信号。
4、 具有自动跳闸功能。当三相绕组温度中的最高一相温度达到跳闸温度时,
温控器内发出蜂鸣报警声,同时面板上“跳闸”灯亮,“跳闸”输出端子(11、
12端)输出一个闭合开关信号。
5、 具有传感器故障报警功能。传感器故障时,温控器面板上的“故障”指示
灯亮,温控器内发出蜂鸣报警声,“故障”输出端子(14、15端)输出一个闭合
开关信号。
5.1 指示灯不同颜色代表不同相传感器故障:黄色代表A相,绿色代表B相,
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红色代表C相,不亮时,代表传感器工作正常。
5.2 通过温度显示区显示不同的代码来区分传感器短路和开路故障:在温度
显示区显示H表示开路,显示L表示短路。
5.3 传感器一相或两相故障时,只根据未故障传感器的温度信号控制风机,
三路传感器同时故障时立即开启风机。
6、 具有参数设置功能。可通过温控器面板上的按键直接设定关闭风机温度、
开启风机温度、超温报警温度、超高温跳闸温度、定时开风机时间、本机通信编
号及所控制风机的台数。在停电后设置数据不丢失。
7、 具有手动控制风机功能。可通过温控器面板上的“手动风机”键手动开启
风机。此功能也可作为测试风机功能使用。
8、风机控制型温控器具有定时开启风机的功能,用户可在面板上进行0~255
个小时任意设置(当设置为0时,表示取消此项功能),定时时间到达后,风机
自动运行1分钟后停止。出厂时设置在24小时。
9、 具有“黑匣子”功能。温控器自动将断电时刻三相绕组的温度记录在内存
中,以备查询。为了避免再次通电后断电而改变记忆数据,规定温度低于80
0
C
时,不刷新原来记录的温度。
五、产品操作说明
绿:开机 红:断相 黄:A相 绿:B相 红:C相
风风风风
风
风
手最
跳
超
机机机机
机
机
动 高
闸
温
3 4 5 6
2
1
最高/+ 查询/—
手动风机
功
能
图1 面板图
故
障
- 5 -
1. 首次上电:当温控器一接上电源,就处于巡回温度显示状态。巡回显示A、
B、C三相绕组温度(字母D代表环境温度)。
2. 最高温度显示状态与巡回温度显示状态切换:面板上有一个“最高/+”键,
在巡回温度显示状态按一下“最高/+”键,则温控器面板上的“最高”灯亮,温
控器进入最高温度显示状态,固定显示三相绕组中的最高相温度;再按一下“最
高/+”键,则温控器面板上的“最高”灯灭,此时温控器切换回巡回温度显示状
态。
3. 手动开风机:面板上有一个“手动风机”键,在温度显示状态按一下“手
动风机”键,则强制开启风机,同时温控器面板上的“手动”灯及相应编号的“风
机”工作指示灯亮;再按一下“手动风机”键,则取消手动开启风机功能,同时
温控器面板上的“手动”灯及相应编号的“风机”工作指示灯灭。
4. 掉电数据查询功能:面板上有一个“查询”键,在温度显示状态连续“查
询”键则依次显示上次掉电时A、B、C三相绕组温度。
5. 控制参数的查询
显示
按键
第
1 第2位
位—
数第5位
码 数码管
管
1
2
3
4
H
P
F
=080
=100
=130
=150
=024
=001
=006
步
骤
1
2
3
4
5
6
7
8
说 明 备 注
功 能
此参数为关风机温度,
设定范围60
0
C~100
0
C
此参数为开风机温度,
设定范围80
0
C~120
0
C
此参数为超温报警温度,
设定范围110
0
C~150
0
C
此参数为超温跳闸温度,
设定范围130
0
C~170
0
C
此参数为定时开启风机时间,
设定范围0~255小时
此参数为进行RS232/RS485通信
时,本机的通信地址编号
此参数表示温控器所控制风机的
台数,设定值为0,2,4,6
回到温度显示状态
出厂设置为80
0
C
出厂设置为100
0
C
出厂设置为130
0
C
出厂设置为150
0
C
出厂设置为24小时
设为0取消定时开风机
出厂设置为6台
功 能
功 能
功 能
功 能
功 能
功 能
功 能
- 6 -
六、 控制参数的修改
步
骤
1
2
功 能
显示
按键
第
1
位
数
码
管
1
0
1
第2位
—
第5位
数码管
=080
说 明 备 注
功 能
此参数为关风机温度,
设定范围60
0
C~100
0
C
最高
此时按
/+
查询
/
—
键
可在60~100范围内进行设置
此时按
最高
/+
查询
/
—
键
可在80~120范围内进行设置
此时按
最高
/+
查询
/
—
键
可在110~150范围内进行设置
此时按
最高
/+
查询
/
—
键
可在130~170范围内进行设置
此时按
最高
/+
查询
/
—
键
可在0~255范围内进行设置
此时按
最高
/+
查询
/
—
键
可在1~255范围内进行设置
此时按
最高
/+
查询
/
—
键
可在0、2、4、6范围内进行设置
回到温度显示状态
出厂设置为80
0
C
第1位数码管的小数点
亮,表示进入参数设定
状态。
连续按三次
=080
3
4
5
功 能
功 能
功 能
2 =100
出厂设置为100
0
C
3
4
=130
出厂设置为130
0
C
=150
出厂设置为150
0
C
连续按三次
6
7
功 能
H =024
出厂设置为24小时
设为0取消定时开风机
功 能
P =001
8
9
功 能
F
=006
出厂设置为6台
功 能
注意:设定参数时,本仪器必须保证跳闸温度>超温报警温度>开风机温度>
关风机温度,且最小间隔为5
0
C
。
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七、BWDK-3208B/C型温控器使用说明如下:
1 . BWDK-3208B型温控器具有4~20mA的电流输出功能。通过电源板上31、32、
33、34接线端输出三路电流,分别用于传送A、B、C三相绕组的温度,其中电流
输出与温度的对应关系是:4~20mA的电流输出分别对应0
0
C~200
0
C的温度值,温度变
化1
0
C对应电流变化值为0.08
mA.电流输出接线方法见图2:
电流输出接线方法见下图:
21
22 23 24
25
26 31
32 32
34
11 12 13
14
15
7 6 5
4 3 2 1 16
17
用户区
通信电缆
A
mA
图2
B
mA
C
mA
mA
mA
mA
mA
图2
2. BWDK—3208C型温控器:是将BWDK—3208B型温控器三路4~20mA模
拟电流终端分别串250Ω电阻而转化为三路1~5V模拟电压输出。
3.BWDK-3208D/3208E型温控器,带有RS232/RS485计算机串行通信接口,其
中RS485通过电源板上31、32接线端输出,31端为正端、32端为负端。RS232
通过电源板上31为数据接收端,32为数据发送端,33为地线。
八.产品电气接线 (图3)
+
-
21
22
23 24
25
26
31
32 33
34 11 12 13 14
15
7 6 5
4 3 2 1 16
17
通信电缆
外接传感器插
故障
跳闸
超温
AC220V
图3
1、传感器连接:插入绕组的PT100铂电阻传感器和PTC传感器(选件)通过15
针插座,将传感器信号输入到本仪器内。
2、风机连接:可接2台风机(接入1、2端) 、4台风机(接入1、2 、3 、4端) 、
6台风机(接入1、2、3、4、5、6端) 。当选择2台或4台风机时,风机接线端子
- 8 -
不能接错,否则报警。
3、跳闸、超温、故障输出端连接
如图3所示,11、12端;13、15端;14、15端在温控器内部是分别接3个继电
器常开触点。11、12端输出跳闸信号,13、15端报警信号,14、15端输出故障信
号。当出现跳闸、超温或传感器故障时,相应的继电器触点吸合(接通),输出
跳闸、超温报警或传感器故障信号。
4、用户接线区:如图3所示,21~26六个双向空接线端是预留给用户使用。
5、温控器总电源:通过16、17接线端从外部接入AC220V交流电。
九,产品外形与安装:
产品外形图见图4:
安装形式有以下两种:
1、支架式安装(图5)
1,
4-φ4.5
温控器
开孔182
×232
支架
连接孔
嵌入式安装开孔图
夹
件
支架安装图 固定支架图
1.1将温控器竖直插入固定支架,打开温控器门用3个M4螺拴将其固定在固定
支架上;
1. 2.用M10螺栓将支架固定在变压器夹件或其他所需地方(见图5)。
2、嵌入式安装
2.1.按图5在变压器外壳上预留安装孔;
2.2.将温控器嵌入孔中,打开温控器门用4个M4螺栓将温控器和外壳固定联接。
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BWDK Series Temperature Controller
User’s Guide
This Guide contains important safety and operating instructions for the BWDK Series
Temperature Controller. It is intended for a skilled electrician or technician who needs to install,
operate or maintain the BWDK Series Temperature Controller. Installers should be certified and
familiar with all local and national codes regarding electrical installations of this nature.
Read this manual thoroughly and be sure you understand it before attempting to use the
BWDK Series Temperature Controller and use the BWDK Series Temperature Controller
correctly according to the information provided. Keep this manual in a safe place for easy
reference.
WARNING:
1. Only qualified personnel should install, operate, inspect and maintain this controller.
2. Input power supply: 220VAC(±10%), 50Hz
3. Ensure all electric parts are properly connected and fastened.
4. Do not touch any exposed live parts when the controller is powered on.
5. Terminal 1, 2, 3, 4, 5, 6, 7, 16 and 17 are connected to dangerous voltages.
6. Do not short-circuit the fan-output terminal 1, 2, 3, 4, 5, 6 and 7.
7. Disconnect the controller from the power transformer before making any tests. Failure to
do so could cause damage to the controller.
CAUTION:
1. The controller can only be used for the specified purpose. Unauthorized modification or
using unauthorized accessories may cause malfunction.
2. Do not expose the controller to corrosive gases, such as SO
2
or H
2
S.
3. Make sure the controller is connected properly before power on.
4. Do not burn the sensor probe with a lighter for test. The temperature of the flame is
around 800
°
C.
5. Do not energize contacts with voltage or current exceeding the rated values.
The BWDK Series Temperature Controller is a precision tool. Please handle it with care, and
store it in a dry and clean environment while not in use. Failure to do so may cause
controller failure.
Meanings of Abbreviations and Acronyms:
Controller: the BWDK Series Temperature Controller.
LED: Light Emitting Diode, the indicating lamps on the front panel.
SSR: Solid-State Relay
- 10 -
1. Introduction
The controller is designed to monitor and control the coil temperatures of a three-phase
dry-type electrical transformer.
• Base on microcomputer, the controller uses both hardware and software anti-inference
technology to ensure that it can work under severe environment.
• The control parameters can be entered through the keypad on the front panel. They will not
be lost during a power outage.
• The coil temperatures would be recorded in a device called ‘black-box’ before the power
cutting out.
• The controller functions as a ‘black box’ during a power outage. It records the coil
temperatures before the power outage for future reference.
• The controller is ease to install, operate, and maintain.
The BWDK Series Temperature Controller is manufactured under the standard
requirements of JB/T7631-1994 Resistance Thermometer for Transformer. It has passed the
comprehensive and strict tests by government-authorized testing institution. The
manufacturer has passed the ISO9001 International Quality System audit. Every unit of the
products is guaranteed qualified under various rigorous operating environments.
2. Configuration Table
Basic Function
Type
Additional Function
3-phase Data Data
Over Comm. Comm.
temp. Failure output output Fan Fan
temp. interface interface
cycle monitor interface interface control protection
monitor RS232 RS485
display 4-20mA 1-5V
BWDK-3205
BWDK-3205B
BWDK-3205C
BWDK-3205D
BWDK-3205E
BWDK-3206
BWDK-3207
BWDK-3208B
BWDK-3208C
BWDK-3208D
BWDK-3208E
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
- 11 -
3. Technical Parameters
1. Temperature Measure Range: 0
°
C ~ 200
°
C
2. Temperature Measure Accuracy: 0.5%FS±0.1
°
C
3. Resolution: 0.1
°
C
4. Power Supply: Single phase 220VAC±10% (50Hz)
5. Capacity: 5VA
6. Sensor: 3 PT100 thermistor, and 3 PTC thermistor(optional)
7. Relay Contact Capacity: 10A/250VAC
8. Ambient temperature: -20
°
C ~ +50
°
C
9. Relative humidity: ≤ 90%
10. Weight: 2.5kg
11. Outline Dimension: 260×200×87(mm)
12. Simulative Analog Data Outputs: 3 outputs of 4-20mA or 1-5V
13. Digital Data Outputs: standard communication interface RS232 or RS485
4. Function Features
1. The controller is able to circularly display the coil temperatures of a three-phase transformer
or to display the highest coil temperature among the three phases.
2. The user can set both fan starting and stopping temperatures so the transformer can work in a
safe atmosphere. The fans will start when the highest coil temperature is above the fan starting
temperature and stop when all coil temperatures are below the fan stopping temperature. The
fans can also be operated manually.
2.1. The transformer can connect 2 fans, 4 fans, 6 fans or without any fans optionally. The
corresponding fan LEDs on the front panel will turn green when fans are started.
2.2. When the fan disconnection occurs, the corresponding fan LED will turn red and the
alarm will sound.
3. Over-Temperature Alarm: When the highest coil temperature exceeds the upper limit
temperature T3, the “Over-temperature” LED on the front panel will turn on and an alarm will
sound. Meanwhile, the micro-switch between terminal 13 and 15 will be closed.
4. Trip Alarm: When the highest coil temperature exceeds the uppermost limit temperature T4,
the “Trip” LED on the front panel will turn on and an alarm will sound. Meanwhile, the relay
between terminal 11 and 12 would be closed.
5. Sensor Failure Alarm: If a sensor malfunction occurs, the “Malfunction” LED on the front
panel will turn on and an alarm will sound. Meanwhile, the relay between terminal 14 and 15
would be closed.
5.1 Different color LEDs indicate the phase of sensor malfunction: yellow for phase A, green
for phase B and red for phase C. The sensors are working normally when all the LEDs are
off.
5.2 Different letters on the front panel display indicate the type of sensor malfunction: H
indicates sensor disconnection while L indicates sensor short circuit.
5.3 When one or two sensors malfunction, the controller will operate the fans base on the
- 12 -
6.
7.
8.
9.
sensor that runs normally. If all 3 sensors malfunction at same time, the fans will start
immediately.
The user can set the temperatures and other parameters by pressing the keypad on the front
panel:
6.1 Temperature T1: when one temperature rises to T1, the fans will start to cool the
transformer.
6.2 Temperature T2: when all temperatures fall below T2 after the fans cooling the
transformer, the fans will switch off.
6.3 Temperature T3 (Over temperature): when the highest coil temperature exceeds T3, the
alarm will sound and the relative relay will be closed.
6.4 Temperature T4 (Trip temperature): when the highest coil temperature exceeds T4, the
alarm will sound and the relative relay will be closed.
6.5 Fan start time: set the time for the fans to start.
6.6 Number of fans: set the number of fans that should control.
6.7 Saved data: set if the data should be stored when the power is cut off.
Manual Control: The fans can be controlled manually by pressing the “Manual” key on the
front panel. This function can also be used for testing the fans.
Fan Auto-Starting: the user can set the time interval (0~255 hours) to start the fans
automatically for one minute. This function can be used to check the fans periodically. The
default value for fan to start automatically is every 24 hours. A setting of 0 hours will not
start fans.
‘Black Box’: The controller will record the coil temperatures automatically during a power
cut-off. These data can be used for analysis purpose later. To avoid the recorded data to be
changed when power supply is back on, the controller was designed not to update the
recorded data until when the temperature is over 80
°
C.
5. Operation Instructions
G: Run R: Fault Y: A G: B R: C
Fan Fan Fan Fan Fan Fan
Manual Highest Over Trip Fault
4 5
6
3
2
1
Temp.
Fan
High/+ Inqu/- Manual
- 13 -
1.
2.
3.
4.
5.
Figure 1: Front Panel
Power on for the first time: mount the controller on the transformer properly and connect it to
220VAC power supply. By default, the controller will display the coil temperatures of phase A,
B, and C circularly. D indicates atmosphere temperature.
Switching between displaying the highest coil temperature only and displaying all three coil
temperatures and atmosphere temperature: the user can choose to display the highest coil
temperature only or all three coil temperatures and atmosphere temperature by pressing the
“High/+” key on the front panel. The ‘Highest’ LED on the front panel will indicate when
only the highest temperature is displayed.
Fans manual control: the user can start the fans by pressing the “Manual” key on the front
panel. At the same time, both the “Manual” LED and “Fan” LED will turn on. Press the
“Manual” key again, the fans will stop and both the “Manual” LED and “Fan” LED will turn
off.
Temperature data inquiry: When the controller loses the power and be powered on again, the
user can check the coil temperatures in turn by pressing the “Inqu/-” key in succession. The
temperatures were stored automatically when the power supply was cut off.
Control parameters inquiry:
Display
Step Button
1
2
3
4
5
6
7
8
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
D1
1
2
3
4
H
P
F
D2-D5
=080
=100
=130
=150
=024
=001
=006
Description
Temperature T2 (Stop fun)
Set range: 60
°
C ~ 100
°
C
TemperatureT1 (Start fan)
Set range: 80
°
C ~ 120
°
C
TemperatureT3 (Over temp. )
Set range: 110
°
C ~ 150
°
C
Temperature T4 (Trip temp.)
Set range: 130
°
C ~ 170
°
C
Time funs running interval
Set range: 0 ~ 255 hours
Address code for communication
RS232/RS485
Number of fans
Set range: 0,2,4 or 6
Return to normal display
Note
Default: 80
°
C
Default: 100
°
C
Default: 130
°
C
Default: 150
°
C
Default: 24 hours
0 hours indicates timer off
Default: 6
- 14 -
6. Control Parameter Settings
Step
1
Display
Button
“Fan”
Press
“Manual”
3 times
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
D1
1
D2-D5
=080
Description
Temperature T2 (Stop funs)
Set range: 60
°
C ~ 100
°
C
Press “High/+” and “Inqu/–”
Enter the set value between 60~100
Note
Default: 80
°
C
The decimal point of D1 is
On to indicate that the
parameter can be set now
Default: 130
°
C
Default: 150
°
C
2 1 =080
4
5
6
7
8
9
3
4
H
P
F
=130
=150
=024
=001
=006
Press “High/+” and “Inqu/–”
Enter the set value between 110~150
Press “High/+” and “Inqu/–”
Enter the set value between 130~170
Press “High/+” and “Inqu/–” Default: 24 hours
Enter the set value between 0~255 0 hours indicates timer off
Press “High/+” and “Inqu/–”
Enter the set value between 1~255
Press “High/+” and “Inqu/–”
Enter the set value within 0, 2, 4 or 6
Return to normal display
Default: 6
Note: Ensure T4 > T3 > T1 > T2. The difference must be equal to or greater than 5
°
C.
7. Additional Functions
7.1. BWDK-3208B: The controller can output three 4~20mA signals to simulate the coil
temperatures of phase A, B and C through terminal 31~34, 32~34 and 33~34 respectively. The
relation between the output and the temperature is: 4~20mA corresponds to 0~200
°
C. Every
change of 1
°
C corresponds to 0.08mA. The connection diagram is as follow:
21
22 23 24
25
26 31
32 32
34
11 12 13 14
15
7 6 5
4 3 2 1 16 17
A
mA
mA
B
mA
mA
C
mA
mA
mA
Figure 2: BWDK-3208B
7.2. BWDK-3208C: The controller converts the 4~20mA output of BWDK-3208B into a 1~5V
output by connecting a 250Ω resistor in series respectively.
7.3. BWDK-3208D/E: The controller is equipped with RS232/RS485 communication interface.
The interface can be used for remote communication with other automation system. The
connecting terminals are 31(+) and 32(–).
- 15 -
8. Electric Circuitry
+
-
21
22 23 24
25
26
31
32 32
34 11 12 13
14
15
15-pin socket
7 6 5
4 3 2 1 16
17
Fault
Trip
Over-temp
AC220V
Figure 3: Electric Circuitry
1. Sensor connection: Insert the external 15-pin plug which connects to PT100 and PTC
(optional) thermistor into the 15-pin socket. The socket can be provided by the
manufacturer upon request.
2. Fans connection: The number of fans used depends on the type of transformer to be
monitored. If there are 2 fans, terminal 1 and 2 are connected; if there are 4 fans, terminal
1,2,3, and 4 are connected; if there are 6 fans, the terminals 1, 2, 3, 4, 5, and 6 are
connected; Wrong connection will activate the alarm.
3. ‘Trip’, ‘Over-temp’ and ‘Fault’ terminals: Terminal 11&12, 13& 15 and 14&15 output 3
pair of SSR signal which can be used to trigger various alarm devices. The default state is
open circuit.
4. Spare terminals: Terminals 21~26 are spare terminal reserved for user to use.
5. Power supply terminal: Connect terminal 16 and 17 to 220VAC single phase.
- 16 -
9. Outline and Installation
Figure 4: Outline Dimensions
Installation options:
a) Assembly on rack (Figure 5):
• Put the controller on the rack vertically.
• Open the door and fasten the controller onto the rack with M4 bolts.
• Fasten the controller on the transformer clamp or other places with M10 bolts.
4-φ4.5
Monitor
182×232
Pack
Clamp
Mounting hole
Assembly Rack
Figure 5: Assembly Options
b) Embedded assembly (see Figure 5):
• Drill 4 mounting holes on the transformer case.
• Open the door and attach the controller onto the transformer through the mounting holes.
- 17 -
2024年11月6日发(作者:何昆谊)
BWDK-系列
通过ISO9001:2000质量体系认证
认证号:05504Q10349ROS
变压器用电阻温度器
使用说明书
制造单位:南京超博机电设备工程有限公司
- 1 -
安 全 指 导
在安装、操作和运行本温控器前,请仔细阅读本说明书,并妥善保管。
!
警 告
只有合格的技术人员才允许操作本温控器,在进行操作前,要熟悉使用
手册中所有安全说明、安装、操作和维护规程。本温控器的正常运行取决于
正确的运输、安装、操作和维护。
1. 本温控器的输入电源为:220V,50Hz。
2. 请确保所有电气连接正确、牢固。
3. 本温控器接通电源后,请不要接触外露的带电部件。
4. 端子1、2、3、4、5、6、7、16、17带有危险电压。
5. 产品上的风机输出端子1、2、3、4、5、6与7间严禁短路。
6. 对变压器进行高压测试时,请先将温控器与变压器分离,以免损坏温控器!
!
注 意
1. 使用前请仔细阅读说明书。
2. 本温控器只能按本公司规定的目的使用。未经授权的修改和使用非本公司所
出售或推荐的零配件都可能导致本系统出故障,甚至失效。
3. 避免在含有二氧化硫(SO
2
)、硫化氢(H
2
S)或其他腐蚀性气体的大气中使
用本温控器,否则会使继电器触点失效。
4. 整机安装好后,连接好有关引线,在确定无误的情况下方可送电运行。
5. 传感器探头请勿用打火机烧烤(火焰温度在800
0
C左右)。
6. 不要在继电器输出触点上施加比最大额定值大的电压、电流。
温控器属精密仪表,请客户妥善保管和放置,如确有问题,使用说明书上或
温控器内的产品合格证上有我公司的售后服务电话,请客户直接与本公司联系,
公司将有专人负责处理,谢谢合作。同时感谢您使用本公司产品,不足之处敬请
您提出宝贵意见,以使我们以后的工作做得更好。
- 2 -
一、产品概述
本仪器是为干式变压器设计的新一代电脑温度控制器,它采用先进的计算机
控制技术和数据存贮技术设计而成,且在设计中采用了硬件和软件相结合的抗干
扰措施,使产品具有了极强的抗干扰能力。本仪器能保证干式变压器在正常的温
度范围内安全地工作,是保护干式变压器的重要装置。温控器的各种控制参数只
需通过面板上几个按键的设置就可实现,而且设定的参数在停电后永不丢失。本
仪器还具有“黑匣子”功能,可记录变压器掉电时刻三个绕组的温度,以供查询。
在使用方面,本仪器具有操作简单、安装方便、维护容易的特点。
本产品符合JB/T7613-1994《变压器用电阻温度计》标准
本产品生产体系通过ISO9001质量体系认证。
二、产品型号:BWDK系列电阻温控器产品型号如下表:
型 号 功 能
巡回显示三相绕组温度,具有故障、超温、跳闸无源触点输
BWDK-3205
出,无风机控制功能。
除具有3205所有功能以外,还具有三路4~20mA模拟电流
BWDK-3205B
输出,输出三相温度的模拟量。
除具有3205所有功能以外,还具有三路1~5V模拟电压输
BWDK-3205C
出,输出三相温度的模拟量。
除具有3205所有功能以外,还具有RS232接口,同时输出
BWDK-3205D
三相温度和传感器状态数字信号。
除具有3205所有功能以外,还具有RS485接口,同时输出
BWDK-3205E
三相温度和传感器状态数字信号。
巡回显示三相绕组温度,具有故障、超温、跳闸无源触点输
BWDK-3206
出,具有4或6路风机控制功能。
巡回显示三相绕组温度,具有故障、超温、跳闸无源触点输
BWDK-3207
出,具有4或6路风机控制功能和断相报警保护功能。
除具有3207所有功能以外,还具有三路4~20mA模拟电流
BWDK-3208B
输出,输出三相温度的模拟量。
除具有3207所有功能以外,还具有三路1~5V模拟电压输
BWDK-3208C
出,输出三相温度的模拟量。
除具有3207所有功能以外,还具有RS232接口,同时输出
BWDK-3208D
三相温度、风机状态和传感器状态数字信号。
除具有3207所有功能以外,还具有RS485接口,同时输出
BWDK-3208E
三相温度、风机状态和传感器状态数字信号。
- 3 -
三、技术参数
1. 测温范围: 0
0
C
—200
0
C
2. 测温精度: ±1%FS
3. 分 辨 率: 0.1
0
C
4. 工作电压: AC220V±10%(50Hz)
5. 功 耗: 5VA
6. 传 感 器: 三支Pt100铂热电阻,三支PTC热电阻(选件)
7. 继电器触点容量: 10A/250VAC
8. 仪表重量: < 3Kg
9. 外形尺寸: 260×200×80(mm)
10. 模拟量输出: 三路4-20mA电流,或三路1-5V电压
11. 数字量输出: RS232或RS485串行通信接口
四、产品功能介绍
1、 具有三相绕组温度的巡回温度显示或最高温度显示功能。
2、 可根据设定的开风机温度和关风机温度自动控制风机的开启和关闭,保证
干式变压器在正常温度下安全地工作。当三相绕组温度中的最高一相温度超过开
风机的设定温度或在手动开风机的情况下,风机会开启。
2.1 . 变压器可配用2台、4台、6台风机或不接风机。接有风机时,当风机开
启,则温控器面板上相应编号的“风机”工作指示灯变为绿色。
2.2 . 若某风机出现断相故障时,则温控器面板上该相风机工作指示灯变为红
色,同时发出蜂鸣报警声。
3、 具有超温报警功能。当三相绕组温度中的最高一相温度超温时,温控器内
发出蜂鸣报警声,同时面板上“超温”灯亮,“超温”输出端子(13、15端)输
出一个闭合开关信号。
4、 具有自动跳闸功能。当三相绕组温度中的最高一相温度达到跳闸温度时,
温控器内发出蜂鸣报警声,同时面板上“跳闸”灯亮,“跳闸”输出端子(11、
12端)输出一个闭合开关信号。
5、 具有传感器故障报警功能。传感器故障时,温控器面板上的“故障”指示
灯亮,温控器内发出蜂鸣报警声,“故障”输出端子(14、15端)输出一个闭合
开关信号。
5.1 指示灯不同颜色代表不同相传感器故障:黄色代表A相,绿色代表B相,
- 4 -
红色代表C相,不亮时,代表传感器工作正常。
5.2 通过温度显示区显示不同的代码来区分传感器短路和开路故障:在温度
显示区显示H表示开路,显示L表示短路。
5.3 传感器一相或两相故障时,只根据未故障传感器的温度信号控制风机,
三路传感器同时故障时立即开启风机。
6、 具有参数设置功能。可通过温控器面板上的按键直接设定关闭风机温度、
开启风机温度、超温报警温度、超高温跳闸温度、定时开风机时间、本机通信编
号及所控制风机的台数。在停电后设置数据不丢失。
7、 具有手动控制风机功能。可通过温控器面板上的“手动风机”键手动开启
风机。此功能也可作为测试风机功能使用。
8、风机控制型温控器具有定时开启风机的功能,用户可在面板上进行0~255
个小时任意设置(当设置为0时,表示取消此项功能),定时时间到达后,风机
自动运行1分钟后停止。出厂时设置在24小时。
9、 具有“黑匣子”功能。温控器自动将断电时刻三相绕组的温度记录在内存
中,以备查询。为了避免再次通电后断电而改变记忆数据,规定温度低于80
0
C
时,不刷新原来记录的温度。
五、产品操作说明
绿:开机 红:断相 黄:A相 绿:B相 红:C相
风风风风
风
风
手最
跳
超
机机机机
机
机
动 高
闸
温
3 4 5 6
2
1
最高/+ 查询/—
手动风机
功
能
图1 面板图
故
障
- 5 -
1. 首次上电:当温控器一接上电源,就处于巡回温度显示状态。巡回显示A、
B、C三相绕组温度(字母D代表环境温度)。
2. 最高温度显示状态与巡回温度显示状态切换:面板上有一个“最高/+”键,
在巡回温度显示状态按一下“最高/+”键,则温控器面板上的“最高”灯亮,温
控器进入最高温度显示状态,固定显示三相绕组中的最高相温度;再按一下“最
高/+”键,则温控器面板上的“最高”灯灭,此时温控器切换回巡回温度显示状
态。
3. 手动开风机:面板上有一个“手动风机”键,在温度显示状态按一下“手
动风机”键,则强制开启风机,同时温控器面板上的“手动”灯及相应编号的“风
机”工作指示灯亮;再按一下“手动风机”键,则取消手动开启风机功能,同时
温控器面板上的“手动”灯及相应编号的“风机”工作指示灯灭。
4. 掉电数据查询功能:面板上有一个“查询”键,在温度显示状态连续“查
询”键则依次显示上次掉电时A、B、C三相绕组温度。
5. 控制参数的查询
显示
按键
第
1 第2位
位—
数第5位
码 数码管
管
1
2
3
4
H
P
F
=080
=100
=130
=150
=024
=001
=006
步
骤
1
2
3
4
5
6
7
8
说 明 备 注
功 能
此参数为关风机温度,
设定范围60
0
C~100
0
C
此参数为开风机温度,
设定范围80
0
C~120
0
C
此参数为超温报警温度,
设定范围110
0
C~150
0
C
此参数为超温跳闸温度,
设定范围130
0
C~170
0
C
此参数为定时开启风机时间,
设定范围0~255小时
此参数为进行RS232/RS485通信
时,本机的通信地址编号
此参数表示温控器所控制风机的
台数,设定值为0,2,4,6
回到温度显示状态
出厂设置为80
0
C
出厂设置为100
0
C
出厂设置为130
0
C
出厂设置为150
0
C
出厂设置为24小时
设为0取消定时开风机
出厂设置为6台
功 能
功 能
功 能
功 能
功 能
功 能
功 能
- 6 -
六、 控制参数的修改
步
骤
1
2
功 能
显示
按键
第
1
位
数
码
管
1
0
1
第2位
—
第5位
数码管
=080
说 明 备 注
功 能
此参数为关风机温度,
设定范围60
0
C~100
0
C
最高
此时按
/+
查询
/
—
键
可在60~100范围内进行设置
此时按
最高
/+
查询
/
—
键
可在80~120范围内进行设置
此时按
最高
/+
查询
/
—
键
可在110~150范围内进行设置
此时按
最高
/+
查询
/
—
键
可在130~170范围内进行设置
此时按
最高
/+
查询
/
—
键
可在0~255范围内进行设置
此时按
最高
/+
查询
/
—
键
可在1~255范围内进行设置
此时按
最高
/+
查询
/
—
键
可在0、2、4、6范围内进行设置
回到温度显示状态
出厂设置为80
0
C
第1位数码管的小数点
亮,表示进入参数设定
状态。
连续按三次
=080
3
4
5
功 能
功 能
功 能
2 =100
出厂设置为100
0
C
3
4
=130
出厂设置为130
0
C
=150
出厂设置为150
0
C
连续按三次
6
7
功 能
H =024
出厂设置为24小时
设为0取消定时开风机
功 能
P =001
8
9
功 能
F
=006
出厂设置为6台
功 能
注意:设定参数时,本仪器必须保证跳闸温度>超温报警温度>开风机温度>
关风机温度,且最小间隔为5
0
C
。
- 7 -
七、BWDK-3208B/C型温控器使用说明如下:
1 . BWDK-3208B型温控器具有4~20mA的电流输出功能。通过电源板上31、32、
33、34接线端输出三路电流,分别用于传送A、B、C三相绕组的温度,其中电流
输出与温度的对应关系是:4~20mA的电流输出分别对应0
0
C~200
0
C的温度值,温度变
化1
0
C对应电流变化值为0.08
mA.电流输出接线方法见图2:
电流输出接线方法见下图:
21
22 23 24
25
26 31
32 32
34
11 12 13
14
15
7 6 5
4 3 2 1 16
17
用户区
通信电缆
A
mA
图2
B
mA
C
mA
mA
mA
mA
mA
图2
2. BWDK—3208C型温控器:是将BWDK—3208B型温控器三路4~20mA模
拟电流终端分别串250Ω电阻而转化为三路1~5V模拟电压输出。
3.BWDK-3208D/3208E型温控器,带有RS232/RS485计算机串行通信接口,其
中RS485通过电源板上31、32接线端输出,31端为正端、32端为负端。RS232
通过电源板上31为数据接收端,32为数据发送端,33为地线。
八.产品电气接线 (图3)
+
-
21
22
23 24
25
26
31
32 33
34 11 12 13 14
15
7 6 5
4 3 2 1 16
17
通信电缆
外接传感器插
故障
跳闸
超温
AC220V
图3
1、传感器连接:插入绕组的PT100铂电阻传感器和PTC传感器(选件)通过15
针插座,将传感器信号输入到本仪器内。
2、风机连接:可接2台风机(接入1、2端) 、4台风机(接入1、2 、3 、4端) 、
6台风机(接入1、2、3、4、5、6端) 。当选择2台或4台风机时,风机接线端子
- 8 -
不能接错,否则报警。
3、跳闸、超温、故障输出端连接
如图3所示,11、12端;13、15端;14、15端在温控器内部是分别接3个继电
器常开触点。11、12端输出跳闸信号,13、15端报警信号,14、15端输出故障信
号。当出现跳闸、超温或传感器故障时,相应的继电器触点吸合(接通),输出
跳闸、超温报警或传感器故障信号。
4、用户接线区:如图3所示,21~26六个双向空接线端是预留给用户使用。
5、温控器总电源:通过16、17接线端从外部接入AC220V交流电。
九,产品外形与安装:
产品外形图见图4:
安装形式有以下两种:
1、支架式安装(图5)
1,
4-φ4.5
温控器
开孔182
×232
支架
连接孔
嵌入式安装开孔图
夹
件
支架安装图 固定支架图
1.1将温控器竖直插入固定支架,打开温控器门用3个M4螺拴将其固定在固定
支架上;
1. 2.用M10螺栓将支架固定在变压器夹件或其他所需地方(见图5)。
2、嵌入式安装
2.1.按图5在变压器外壳上预留安装孔;
2.2.将温控器嵌入孔中,打开温控器门用4个M4螺栓将温控器和外壳固定联接。
- 9 -
BWDK Series Temperature Controller
User’s Guide
This Guide contains important safety and operating instructions for the BWDK Series
Temperature Controller. It is intended for a skilled electrician or technician who needs to install,
operate or maintain the BWDK Series Temperature Controller. Installers should be certified and
familiar with all local and national codes regarding electrical installations of this nature.
Read this manual thoroughly and be sure you understand it before attempting to use the
BWDK Series Temperature Controller and use the BWDK Series Temperature Controller
correctly according to the information provided. Keep this manual in a safe place for easy
reference.
WARNING:
1. Only qualified personnel should install, operate, inspect and maintain this controller.
2. Input power supply: 220VAC(±10%), 50Hz
3. Ensure all electric parts are properly connected and fastened.
4. Do not touch any exposed live parts when the controller is powered on.
5. Terminal 1, 2, 3, 4, 5, 6, 7, 16 and 17 are connected to dangerous voltages.
6. Do not short-circuit the fan-output terminal 1, 2, 3, 4, 5, 6 and 7.
7. Disconnect the controller from the power transformer before making any tests. Failure to
do so could cause damage to the controller.
CAUTION:
1. The controller can only be used for the specified purpose. Unauthorized modification or
using unauthorized accessories may cause malfunction.
2. Do not expose the controller to corrosive gases, such as SO
2
or H
2
S.
3. Make sure the controller is connected properly before power on.
4. Do not burn the sensor probe with a lighter for test. The temperature of the flame is
around 800
°
C.
5. Do not energize contacts with voltage or current exceeding the rated values.
The BWDK Series Temperature Controller is a precision tool. Please handle it with care, and
store it in a dry and clean environment while not in use. Failure to do so may cause
controller failure.
Meanings of Abbreviations and Acronyms:
Controller: the BWDK Series Temperature Controller.
LED: Light Emitting Diode, the indicating lamps on the front panel.
SSR: Solid-State Relay
- 10 -
1. Introduction
The controller is designed to monitor and control the coil temperatures of a three-phase
dry-type electrical transformer.
• Base on microcomputer, the controller uses both hardware and software anti-inference
technology to ensure that it can work under severe environment.
• The control parameters can be entered through the keypad on the front panel. They will not
be lost during a power outage.
• The coil temperatures would be recorded in a device called ‘black-box’ before the power
cutting out.
• The controller functions as a ‘black box’ during a power outage. It records the coil
temperatures before the power outage for future reference.
• The controller is ease to install, operate, and maintain.
The BWDK Series Temperature Controller is manufactured under the standard
requirements of JB/T7631-1994 Resistance Thermometer for Transformer. It has passed the
comprehensive and strict tests by government-authorized testing institution. The
manufacturer has passed the ISO9001 International Quality System audit. Every unit of the
products is guaranteed qualified under various rigorous operating environments.
2. Configuration Table
Basic Function
Type
Additional Function
3-phase Data Data
Over Comm. Comm.
temp. Failure output output Fan Fan
temp. interface interface
cycle monitor interface interface control protection
monitor RS232 RS485
display 4-20mA 1-5V
BWDK-3205
BWDK-3205B
BWDK-3205C
BWDK-3205D
BWDK-3205E
BWDK-3206
BWDK-3207
BWDK-3208B
BWDK-3208C
BWDK-3208D
BWDK-3208E
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
- 11 -
3. Technical Parameters
1. Temperature Measure Range: 0
°
C ~ 200
°
C
2. Temperature Measure Accuracy: 0.5%FS±0.1
°
C
3. Resolution: 0.1
°
C
4. Power Supply: Single phase 220VAC±10% (50Hz)
5. Capacity: 5VA
6. Sensor: 3 PT100 thermistor, and 3 PTC thermistor(optional)
7. Relay Contact Capacity: 10A/250VAC
8. Ambient temperature: -20
°
C ~ +50
°
C
9. Relative humidity: ≤ 90%
10. Weight: 2.5kg
11. Outline Dimension: 260×200×87(mm)
12. Simulative Analog Data Outputs: 3 outputs of 4-20mA or 1-5V
13. Digital Data Outputs: standard communication interface RS232 or RS485
4. Function Features
1. The controller is able to circularly display the coil temperatures of a three-phase transformer
or to display the highest coil temperature among the three phases.
2. The user can set both fan starting and stopping temperatures so the transformer can work in a
safe atmosphere. The fans will start when the highest coil temperature is above the fan starting
temperature and stop when all coil temperatures are below the fan stopping temperature. The
fans can also be operated manually.
2.1. The transformer can connect 2 fans, 4 fans, 6 fans or without any fans optionally. The
corresponding fan LEDs on the front panel will turn green when fans are started.
2.2. When the fan disconnection occurs, the corresponding fan LED will turn red and the
alarm will sound.
3. Over-Temperature Alarm: When the highest coil temperature exceeds the upper limit
temperature T3, the “Over-temperature” LED on the front panel will turn on and an alarm will
sound. Meanwhile, the micro-switch between terminal 13 and 15 will be closed.
4. Trip Alarm: When the highest coil temperature exceeds the uppermost limit temperature T4,
the “Trip” LED on the front panel will turn on and an alarm will sound. Meanwhile, the relay
between terminal 11 and 12 would be closed.
5. Sensor Failure Alarm: If a sensor malfunction occurs, the “Malfunction” LED on the front
panel will turn on and an alarm will sound. Meanwhile, the relay between terminal 14 and 15
would be closed.
5.1 Different color LEDs indicate the phase of sensor malfunction: yellow for phase A, green
for phase B and red for phase C. The sensors are working normally when all the LEDs are
off.
5.2 Different letters on the front panel display indicate the type of sensor malfunction: H
indicates sensor disconnection while L indicates sensor short circuit.
5.3 When one or two sensors malfunction, the controller will operate the fans base on the
- 12 -
6.
7.
8.
9.
sensor that runs normally. If all 3 sensors malfunction at same time, the fans will start
immediately.
The user can set the temperatures and other parameters by pressing the keypad on the front
panel:
6.1 Temperature T1: when one temperature rises to T1, the fans will start to cool the
transformer.
6.2 Temperature T2: when all temperatures fall below T2 after the fans cooling the
transformer, the fans will switch off.
6.3 Temperature T3 (Over temperature): when the highest coil temperature exceeds T3, the
alarm will sound and the relative relay will be closed.
6.4 Temperature T4 (Trip temperature): when the highest coil temperature exceeds T4, the
alarm will sound and the relative relay will be closed.
6.5 Fan start time: set the time for the fans to start.
6.6 Number of fans: set the number of fans that should control.
6.7 Saved data: set if the data should be stored when the power is cut off.
Manual Control: The fans can be controlled manually by pressing the “Manual” key on the
front panel. This function can also be used for testing the fans.
Fan Auto-Starting: the user can set the time interval (0~255 hours) to start the fans
automatically for one minute. This function can be used to check the fans periodically. The
default value for fan to start automatically is every 24 hours. A setting of 0 hours will not
start fans.
‘Black Box’: The controller will record the coil temperatures automatically during a power
cut-off. These data can be used for analysis purpose later. To avoid the recorded data to be
changed when power supply is back on, the controller was designed not to update the
recorded data until when the temperature is over 80
°
C.
5. Operation Instructions
G: Run R: Fault Y: A G: B R: C
Fan Fan Fan Fan Fan Fan
Manual Highest Over Trip Fault
4 5
6
3
2
1
Temp.
Fan
High/+ Inqu/- Manual
- 13 -
1.
2.
3.
4.
5.
Figure 1: Front Panel
Power on for the first time: mount the controller on the transformer properly and connect it to
220VAC power supply. By default, the controller will display the coil temperatures of phase A,
B, and C circularly. D indicates atmosphere temperature.
Switching between displaying the highest coil temperature only and displaying all three coil
temperatures and atmosphere temperature: the user can choose to display the highest coil
temperature only or all three coil temperatures and atmosphere temperature by pressing the
“High/+” key on the front panel. The ‘Highest’ LED on the front panel will indicate when
only the highest temperature is displayed.
Fans manual control: the user can start the fans by pressing the “Manual” key on the front
panel. At the same time, both the “Manual” LED and “Fan” LED will turn on. Press the
“Manual” key again, the fans will stop and both the “Manual” LED and “Fan” LED will turn
off.
Temperature data inquiry: When the controller loses the power and be powered on again, the
user can check the coil temperatures in turn by pressing the “Inqu/-” key in succession. The
temperatures were stored automatically when the power supply was cut off.
Control parameters inquiry:
Display
Step Button
1
2
3
4
5
6
7
8
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
D1
1
2
3
4
H
P
F
D2-D5
=080
=100
=130
=150
=024
=001
=006
Description
Temperature T2 (Stop fun)
Set range: 60
°
C ~ 100
°
C
TemperatureT1 (Start fan)
Set range: 80
°
C ~ 120
°
C
TemperatureT3 (Over temp. )
Set range: 110
°
C ~ 150
°
C
Temperature T4 (Trip temp.)
Set range: 130
°
C ~ 170
°
C
Time funs running interval
Set range: 0 ~ 255 hours
Address code for communication
RS232/RS485
Number of fans
Set range: 0,2,4 or 6
Return to normal display
Note
Default: 80
°
C
Default: 100
°
C
Default: 130
°
C
Default: 150
°
C
Default: 24 hours
0 hours indicates timer off
Default: 6
- 14 -
6. Control Parameter Settings
Step
1
Display
Button
“Fan”
Press
“Manual”
3 times
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
“Fan”
D1
1
D2-D5
=080
Description
Temperature T2 (Stop funs)
Set range: 60
°
C ~ 100
°
C
Press “High/+” and “Inqu/–”
Enter the set value between 60~100
Note
Default: 80
°
C
The decimal point of D1 is
On to indicate that the
parameter can be set now
Default: 130
°
C
Default: 150
°
C
2 1 =080
4
5
6
7
8
9
3
4
H
P
F
=130
=150
=024
=001
=006
Press “High/+” and “Inqu/–”
Enter the set value between 110~150
Press “High/+” and “Inqu/–”
Enter the set value between 130~170
Press “High/+” and “Inqu/–” Default: 24 hours
Enter the set value between 0~255 0 hours indicates timer off
Press “High/+” and “Inqu/–”
Enter the set value between 1~255
Press “High/+” and “Inqu/–”
Enter the set value within 0, 2, 4 or 6
Return to normal display
Default: 6
Note: Ensure T4 > T3 > T1 > T2. The difference must be equal to or greater than 5
°
C.
7. Additional Functions
7.1. BWDK-3208B: The controller can output three 4~20mA signals to simulate the coil
temperatures of phase A, B and C through terminal 31~34, 32~34 and 33~34 respectively. The
relation between the output and the temperature is: 4~20mA corresponds to 0~200
°
C. Every
change of 1
°
C corresponds to 0.08mA. The connection diagram is as follow:
21
22 23 24
25
26 31
32 32
34
11 12 13 14
15
7 6 5
4 3 2 1 16 17
A
mA
mA
B
mA
mA
C
mA
mA
mA
Figure 2: BWDK-3208B
7.2. BWDK-3208C: The controller converts the 4~20mA output of BWDK-3208B into a 1~5V
output by connecting a 250Ω resistor in series respectively.
7.3. BWDK-3208D/E: The controller is equipped with RS232/RS485 communication interface.
The interface can be used for remote communication with other automation system. The
connecting terminals are 31(+) and 32(–).
- 15 -
8. Electric Circuitry
+
-
21
22 23 24
25
26
31
32 32
34 11 12 13
14
15
15-pin socket
7 6 5
4 3 2 1 16
17
Fault
Trip
Over-temp
AC220V
Figure 3: Electric Circuitry
1. Sensor connection: Insert the external 15-pin plug which connects to PT100 and PTC
(optional) thermistor into the 15-pin socket. The socket can be provided by the
manufacturer upon request.
2. Fans connection: The number of fans used depends on the type of transformer to be
monitored. If there are 2 fans, terminal 1 and 2 are connected; if there are 4 fans, terminal
1,2,3, and 4 are connected; if there are 6 fans, the terminals 1, 2, 3, 4, 5, and 6 are
connected; Wrong connection will activate the alarm.
3. ‘Trip’, ‘Over-temp’ and ‘Fault’ terminals: Terminal 11&12, 13& 15 and 14&15 output 3
pair of SSR signal which can be used to trigger various alarm devices. The default state is
open circuit.
4. Spare terminals: Terminals 21~26 are spare terminal reserved for user to use.
5. Power supply terminal: Connect terminal 16 and 17 to 220VAC single phase.
- 16 -
9. Outline and Installation
Figure 4: Outline Dimensions
Installation options:
a) Assembly on rack (Figure 5):
• Put the controller on the rack vertically.
• Open the door and fasten the controller onto the rack with M4 bolts.
• Fasten the controller on the transformer clamp or other places with M10 bolts.
4-φ4.5
Monitor
182×232
Pack
Clamp
Mounting hole
Assembly Rack
Figure 5: Assembly Options
b) Embedded assembly (see Figure 5):
• Drill 4 mounting holes on the transformer case.
• Open the door and attach the controller onto the transformer through the mounting holes.
- 17 -