ABB UT372B ABB

模拟输出:

类型:双路独立输出(默认配置为4-20mA和0-10V,可互换)。

负载能力:

4-20mA:最大负载500Ω(24V DC供电时)。

0-10V:最小负载2kΩ。

隔离设计:模拟输出与输入电压、电源之间隔离,隔离电压2500V AC(1分钟),避免共模干扰。

数字输出:

接口:RS485(半双工),支持Modbus RTU协议。

通信参数:

波特率:9600/19200/38400/57600/115200 bps(默认19200)。

数据格式:8位数据位、1位停止位、无校验(可配置偶校验)。

地址设置:通过旋转开关或软件配置,地址范围1-247。

3.电气与机械特性

电源:

工作电压:DC 24V(±20%),功耗<5W。

可选电源:支持AC 85-265V(需定制),适应无直流电源场景。

分类: 品牌:

描述

一、产品定位与核心价值

工业级电压测量定位:

UT372B是UT系列中的三相电压专用变送器,支持三相三线(3P3W)或三相四线(3P4W)系统,可同时测量三相线电压(Uab、Ubc、Uca)或相电压(Ua、Ub、Uc),输出标准化模拟信号(4-20mA或0-10V)或数字信号(RS485),便于与PLC、DCS、SCADA系统集成。

与单相电压变送器(如UT172B)相比,UT372B集成三相测量功能,减少设备数量与安装空间,降低系统成本。

与竞品(如西门子SITRANS P320、霍尼韦尔ST3000)相比,UT372B支持更宽的输入电压范围(50-600V AC),且价格更具竞争力,适合中低端工业市场。

核心价值:

高精度测量:采用真有效值(RMS)测量技术,准确反映非线性负载(如变频器、整流器)下的电压有效值,避免传统平均值测量误差。

宽输入范围:支持50-600V AC(线电压)或28-346V AC(相电压),覆盖低压配电系统(220V/380V)到中压系统(690V),适应多场景需求。

多信号输出:提供模拟输出(4-20mA/0-10V)和数字输出(RS485 Modbus RTU),支持同时连接模拟仪表与数字化系统,实现传统与智能监控兼容。

二、核心功能与特性

1.测量功能

三相电压测量:

测量参数:

线电压:Uab、Ubc、Uca(三相三线/四线系统)。

相电压:Ua、Ub、Uc(仅三相四线系统)。

测量范围:

线电压:50-600V AC(默认),可通过软件配置扩展至1000V AC(需定制)。

相电压:28-346V AC(三相四线系统)。

测量精度:

基本精度:±0.2%FS(满量程),温度影响<±0.01%/℃。

响应时间:<200ms(90%阶跃响应),适合动态负载监控。

辅助功能:

电压越限报警:支持两路可编程报警输出(继电器触点),可设置高/低电压阈值,用于过压/欠压保护。

相位识别:通过LED指示灯显示三相电压相位顺序(A-B-C),避免接线错误。

2.输出接口

模拟输出:

类型:双路独立输出(默认配置为4-20mA和0-10V,可互换)。

负载能力:

4-20mA:最大负载500Ω(24V DC供电时)。

0-10V:最小负载2kΩ。

隔离设计:模拟输出与输入电压、电源之间隔离,隔离电压2500V AC(1分钟),避免共模干扰。

数字输出:

接口:RS485(半双工),支持Modbus RTU协议。

通信参数:

波特率:9600/19200/38400/57600/115200 bps(默认19200)。

数据格式:8位数据位、1位停止位、无校验(可配置偶校验)。

地址设置:通过旋转开关或软件配置,地址范围1-247。

3.电气与机械特性

电源:

工作电压:DC 24V(±20%),功耗<5W。

可选电源:支持AC 85-265V(需定制),适应无直流电源场景。

环境适应性:

工作温度:-20℃~+70℃(工业级),存储温度-40℃~+85℃。

湿度:5%-95%RH(无凝露),防护等级IP20(标准DIN导轨安装)。

抗干扰:符合IEC 61000-4-4(快速瞬变脉冲群)和IEC 61000-4-5(浪涌抗扰度)标准,适用于电磁干扰强的工业环境。

机械设计:

尺寸:120mm(宽)×100mm(高)×58mm(深),标准DIN 35mm导轨安装。

接线端子:采用弹簧式端子,支持1.5-2.5mm²导线,接线牢固且防松动。

1.Product Positioning and Core Value

Industrial-grade voltage measurement and positioning:

The UT372B is a three-phase voltage dedicated transmitter in the UT series.It supports three-phase three-wire(3P3W)or three-phase four-wire(3P4W)systems.It can measure three-phase line voltages(Uab,Ubc,Uca)or phase voltages(Ua,Ub,Uc)at the same time,and outputs standardized analog signals(4-20mA or 0-10V)or digital signals(RS485),which are convenient for integration with PLC,DCS,and SCADA systems.

Compared with single-phase voltage transmitters(such as UT172B),the UT372B integrates three-phase measurement functions to reduce the number of equipment and installation space and reduce system costs.

Compared with competitors(such as Siemens SITRANS P320 and Honeywell ST3000),the UT372B supports a wider input voltage range(50-600V AC)and is more competitive in price,suitable for the mid-and low-end industrial markets.

Core Values:

High-precision measurement:Use true effective value(RMS)measurement technology to accurately reflect the voltage effective value under nonlinear loads(such as inverters,rectifiers)to avoid traditional average measurement errors.

Wide input range:Supports 50-600V AC(line voltage)or 28-346V AC(phase voltage),covering low-voltage distribution system(220V/380V)to medium-voltage system(690V),adapting to multi-scenario needs.

Multi-signal output:Provides analog output(4-20mA/0-10V)and digital output(RS485 Modbus RTU),which supports simultaneously connecting analog instruments and digital systems to achieve traditional and intelligent monitoring compatibility.

2.Core functions and characteristics

1.Measurement function

Three-phase voltage measurement:

Measurement parameters:

Line voltage:Uab,Ubc,Uca(three-phase three-wire/four-wire system).

Phase voltage:Ua,Ub,Uc(three-phase and four-wire system only).

Measurement range:

Line voltage:50-600V AC(default),can be extended to 1000V AC through software configuration(customized).

Phase voltage:28-346V AC(three-phase four-wire system).

Measurement accuracy:

Basic accuracy:±0.2%FS(full scale),temperature influence<±0.01%/℃.

Response time:<200ms(90%step response),suitable for dynamic load monitoring.

Accessibility:

Voltage overlimit alarm:supports two programmable alarm outputs(relay contacts),high/low voltage thresholds can be set for overvoltage/undervoltage protection.

Phase recognition:The three-phase voltage phase sequence(A-B-C)is displayed through the LED indicator to avoid wiring errors.

2.Output interface

Analog output:

Type:Dual independent output(default configuration is 4-20mA and 0-10V,interchangeable).

Load capacity:

4-20mA:Maximum load 500Ω(when powered by 24V DC).

0-10V:Minimum load 2kΩ.

Isolation design:Isolate the analog output from the input voltage and power supply,and the isolation voltage is 2500V AC(1 minute),avoiding common mode interference.

Digital output:

Interface:RS485(half duplex),supports Modbus RTU protocol.

Communication parameters:

Baud rate:9600/19200/38400/57600/115200 bps(default 19200).

Data format:8-bit data bits,1-bit stop bits,no calibration(even-calculating can be configured).

Address settings:Configure through rotary switch or software,address range 1-247.

3.Electrical and mechanical characteristics

power supply:

Operating voltage:DC 24V(±20%),power consumption<5W.

Optional power supply:supports AC 85-265V(customized),adaptable to DC power supply scenarios.

Environmental adaptability:

Operating temperature:-20℃~+70℃(industrial grade),storage temperature-40℃~+85℃.

Humidity:5%-95%RH(no condensation),protection level IP20(standard DIN rail installation).

Immunity:Complies with IEC 61000-4-4(fast transient pulse group)and IEC 61000-4-5(surge immunity)standards,suitable for industrial environments with strong electromagnetic interference.

Mechanical design:

Dimensions:120mm(width)×100mm(height)×58mm(deep),standard DIN 35mm rail installation.

Wiring terminals:Use spring-type terminals,supporting 1.5-2.5mm²wires,the wiring is firm and anti-loosening.

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