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1.概述: 变压器抽头位置变送器是一种能提取主变压器抽头位置信号,并经隔离,转换成对应于输入(变送器抽头位置信号)的直流模拟输出。可广泛用于变压器运行状态的自动化监控。 |
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本产品具有如下特点: |
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2.型号:
![]() 3.原理
图中1ZJ-19ZJ为变压器抽头的辅助接点,它反应变压器的抽头位置。哪一对接点闭合,表示变压器抽头在该对接点所指位置。如果将这些接点开关量直接接入RTU的数字量输入口,就要占用19个遥信,即使与BCD码编码器相配,亦要占用5个遥信,如果有多台变压器,则浪费相当严重。YDC系列变压器抽头位置变送器将变压器抽头位置信号转换为直流输出,只占用RTU一个遥测量。 4.主要技术性能指标: 长期稳定性:年最大变化±0.1% 输入电压:(高电平)DC12~24V (低电平)0 输入阻抗:≥5.1KΩ 输出:0~5V 1~5V 0~10mA 0~20mA 输出波纹:<10mV 负载能力:电压输出≥2KΩ 电流输出≤750KΩ 响应时间:≤10mS 绝缘强度:AC2000V于输入/输出/外壳/辅助电源 工作温度:-10~+45℃ 贮藏条件:-40~70℃ 相对湿度10~99%RH无凝露 辅助电源:AC220V±15% 50Hz±10% DC220V±30% 电源功耗:≤1VA 5.输入/输出:(以输出0-5V为例) |
| 输入码 | 抽头状态 | 输出 | ||||
| a | b | c | d | e | ||
| 0 | 0 | 0 | 0 | 0 | 0 | 0. 250V±25mV |
| 1 | 0 | 0 | 0 | 0 | 1 | 0. 500V±25mV |
| 0 | 1 | 0 | 0 | 0 | 2 | 0. 750V±25mV |
| 1 | 1 | 0 | 0 | 0 | 3 | 1. 000V±25mV |
| 0 | 0 | 1 | 0 | 0 | 4 | 1. 250V±25mV |
| 1 | 0 | 1 | 0 | 0 | 5 | 1. 500V±25mV |
| 0 | 1 | 1 | 0 | 0 | 6 | 1. 750V±25mV |
| 1 | 1 | 1 | 0 | 0 | 7 | 2. 000V±25mV |
| 0 | 0 | 0 | 1 | 0 | 8 | 2. 250V±25mV |
| 1 | 0 | 0 | 1 | 0 | 9 | 2. 500V±25mV |
| 0 | 0 | 0 | 0 | 1 | 10 | 2. 750V±25mV |
| 1 | 0 | 0 | 0 | 1 | 11 | 3. 000V±25mV |
| 0 | 1 | 0 | 0 | 1 | 12 | 3. 250V±25mV |
| 1 | 1 | 0 | 0 | 1 | 13 | 3. 500V±25mV |
| 0 | 0 | 1 | 0 | 1 | 14 | 3. 750V±25mV |
| 1 | 0 | 1 | 0 | 1 | 15 | 4. 000V±25mV |
| 0 | 1 | 1 | 0 | 1 | 16 | 4. 250V±25mV |
| 1 | 1 | 1 | 0 | 1 | 17 | 4. 500V±25mV |
| 0 | 0 | 0 | 1 | 1 | 18 | 4. 750V±25mV |
| 1 | 0 | 0 | 1 | 1 | 19 | 5. 000V±25mV |
| 输 入 | 输出 | ||||||||||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0. 250V±25mV |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0. 500V±25mV |
| 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0. 750V±25mV |
| 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1. 000V±25mV |
| 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1. 250V±25mV |
| 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1. 500V±25mV |
| 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1. 750V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2. 000V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2. 250V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2. 500V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2. 750V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3. 000V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3. 250V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3. 500V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 3. 750V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 4. 000V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 4. 250V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 4. 500V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4. 750V±25mV |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5. 000V±25m |
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