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电流测量专家 | 电流传感器制造商 | LEM
电流测量专家 | 电流传感器制造商 | LEM
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新闻 & 活动
所有新闻 & 活动
电流传感器
45-90 A
90-180 A
187.5-375 A
375-750 A
750-1500 A
1500-3000 A
3000-6000 A
6000-12000 A
12000-24000 A
Other value
所有的电流传感器
电压传感器
25-50 V
50-100 V
100-200 V
200-400 V
400-800 V
800-1600 V
1600-3200 V
3200-6400 V
所有的电压传感器
集成式电流传感器
GO Series
HMSR Series
FHS Series
所有的集成式电流传感器
罗氏线圈
ART 系列
ARU系列
罗氏线圈积分器
能量计
TEMA4G
EM4T II
DCBM 400 & 600
DCBM 100
所有的能量计
汽车电池管理
EV Chargers
汽车电机控制
Smart Grid
焊接
自动化
驱动
高精度
电源
可再生能源
轨旁
牵引
售后 & RMA
Merchandize authorization
RMA Categories
所有售后 and RMA
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搜索
EN
JP
CN
EN
JP
CN
Products
电流传感器
电压传感器
所有的能量计
集成式电流传感器
Rogowski Coil
Applications
Automotive Battery Management
EV Chargers
Automotive Motor Control
Smart Grid
Welding
Automation
Drives
High Precision
Power Supplies
Renewable Energies
Trackside
Traction
Support
所有售后 and RMA
所有下载
所有技术问题解答
莱姆联系人
瑞士
LEM International SA
Route du Nant d’Avril 152
1217 Meyrin
瑞士
https://www.lem.com
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2022-2023 ANNUAL REVIEW
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CAB 1500, best in class for battery management
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您值得信赖的电气测量解决方案合作伙伴
演示文档
莱姆一览
通过创新的电量测量解决方案，莱姆正帮助我们的客户和社会加速向未来可持续发展。LEM分布在15个国家以上的1,500名员工将技术潜能转换成强有力的解决方案，LEM培养和招募全球顶尖的人才，工作在可再生能源、机动化、自动化和数字化等快速发展的行业前沿。
莱姆证书
ISO/TS 16949 认证
莱姆通过了汽车和工业用电流和电压测量解决方案的设计和制造认证
IRIS 认证
莱姆通过了铁路行业电流和电压测量方案的设计、开发和制造质量管理认证
ISO 9001 认证
莱姆通过了电流和电压测量解决方案的设计和制造质量管理和质量保证体系认证
莱姆大事件
年产量
莱姆每年可生产4200万只传感器用于工业、汽车、铁路等领域
设计&生产中心数量
莱姆在全球拥有4个设计&生产中心，包括瑞士、中国、保加利亚和日本，另外在法国有一个独立的设计中心。
莱姆历史
1972年成立，莱姆拥有45年设计生产传感器的经验
LEM 新闻
LEM 新闻
产品
CDT 系列 ： 汽车级剩余电流监测B 型传感器
CDT 是汽车级泄漏电流传感器系列，也称为 B 级和 B+ 级剩余电流监测（RCM）或剩余电流检测 （RCD），专用于直流、交流和交流+直流泄漏电流测量。
产品
HSTDR
汽车牵引逆变器电流测量的最佳灵活设计
产品
CAB系列
高精确度和低偏移量，用于电池荷电状态（SOC）最优估算
产品
HBCT
Automotive current sensor for battery management systems
产品
HC16F
A highly flexible design to measure DC link current as well as phase current in motor control applications
产品
HOB
A unique combination of short response time and high bandwidth for current sensing in harsh environments
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重大事件
为什么莱姆是市场领导者？
质量
证书&5年质保
创新
持续研发
环境
职业安全健康
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应用
查找适合您的行业的应用和产品
驱动
不经意中，人们可能会经过甚至每天使用几个LEM传感器。传感器存在于电梯、叉车、机械工具、印刷机和所有使用工业驱动电机的设备中，...
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可再生能源
LEM传感器，专门为可再生能源系统设计，控制从可再生能源系统传送到电网的能量的流量和波形。它们通过测量电流，帮助风能，太阳能，光...
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电源
由电力电子器件组成的电源装置如充电器、直流分路、电池、逆变器和/或整流器都需要有效的电流控制、监测、调节和保护。以便于确保它们正...
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牵引
高速列车、城市交通系统和货运列车等公共交通方式为满足更大流动性的需求提供了一个理想的解决方案，同时帮助解决污染和交通拥挤问题。...
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高精度
在许多工业应用中，高精度的电流测量是设备性能的关键.微小的误差会引起重大事故。无论是医疗设备还是其他工业应用，LEM电流传感器确立...
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焊接
为了使焊接过程成功，焊接的两个部分必须暴露在由温度高达3000°C的电弧产生的热源中。焊接质量取决于 对电弧和产生电弧的电流的精确控...
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轨旁
铁路工业在不断发展。铁路网络的私有化带来了新的需求，例如通过对点(开关)机或信号环境的监测来进行铁路维修，Lem新的传感器系列可以符...
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自动化
电信号是所有制造过程、机器和系统的动力。此外，它们还能对设备和设施进行快速和可靠的监测。LEM传感器通过增加控制和反馈将实现更进一步的监测...
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汽车电池管理
莱姆与全球主要的汽车制造商和Tier-1供应商合作，在电池管理和电机控制领域为客户提供电气隔离式传感器...
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汽车电机控制
Lem汽车专门开发和制造电子传感器，用于电池管理、电机控制、DC/DC变换器和车载充电器中的电气参数测量...
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Smart Grid
智能电网是整个电力系统的支柱。随着数以百万的电动汽车运行，以及可再生能源装机容量达到数十亿千瓦，我们的电力系统正在经历一场彻底的...
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EV Chargers
One of the biggest challenge of the 21st century will be to decarbonized the traditional transportation accountable for over 25% of global...
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全球电量测量的引领者
LEM 为能源和交通领域提供最佳的电流和电压测量解决方案，确保客户系统的更优化、更可靠和更安全。
经过 50 多年的发展，我们在 ASIC 设计、嵌入式软件、产品开发、制造和测试方面积累了独一无二的专业知识和经验，很荣幸能够在电气参数测量领域为客户提供最广泛的产品系列。
LEM 传感器、互感器和 ICS 可满足您 10 至 2,000 A 和 10 至 4,200 V 的所有电流和电压测量需求。我们生产数千种电流传感器、电压传感器、IC传感器、罗格斯基线圈解决方案和电能表。
电气化趋势对所有市场和行业都有影响。这不仅增加了现有系统对电气测量的需求，也增加了新应用对电气测量的需求。我们的电流和电压测量与监测解决方案在以下 6 个应用领域发挥着关键作用：电机控制、电力转换、电气安全、电池管理、能量监控和能量计量。
LEM 帮助客户和社会加速向可持续发展的未来过渡。我们的电流和电压传感器、电流计费表和电流监测解决方案（或称智能电网传感器）有助于提供持续供电、控制能量消耗、推广可再生能源，并为减少客户系统内的电能消耗做出贡献。
有用的链接
隐私政策
饼干政策
条款和条件
常见问题
联系人
保持知情
全称
电子邮件
通过注册，您同意我们的隐私政策.
Headquarters
LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrin
Switzerland
Tel. : +41 22 706 11 11Fax : +41 22 794 94 78
跟着我们
电流传感器和变送器 | LEM
电流传感器和变送器 | LEM
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新闻 & 活动
所有新闻 & 活动
电流传感器
45-90 A
90-180 A
187.5-375 A
375-750 A
750-1500 A
1500-3000 A
3000-6000 A
6000-12000 A
12000-24000 A
Other value
所有的电流传感器
电压传感器
25-50 V
50-100 V
100-200 V
200-400 V
400-800 V
800-1600 V
1600-3200 V
3200-6400 V
所有的电压传感器
集成式电流传感器
GO Series
HMSR Series
FHS Series
所有的集成式电流传感器
罗氏线圈
ART 系列
ARU系列
罗氏线圈积分器
能量计
TEMA4G
EM4T II
DCBM 400 & 600
DCBM 100
所有的能量计
汽车电池管理
EV Chargers
汽车电机控制
Smart Grid
焊接
自动化
驱动
高精度
电源
可再生能源
轨旁
牵引
售后 & RMA
Merchandize authorization
RMA Categories
所有售后 and RMA
下载
PRODUCT DOCUMENTATION
CERTIFICATES
Softwares
Brochures
所有下载
技术问题解答
General
Rf Communication
Modbus Application
About EMN
Mesh node and other devices
所有技术问题解答
您需要了解什么 ?
产品信息
支持
全球信息
搜索
EN
JP
CN
EN
JP
CN
Products
电流传感器
电压传感器
所有的能量计
集成式电流传感器
Rogowski Coil
Applications
Automotive Battery Management
EV Chargers
Automotive Motor Control
Smart Grid
Welding
Automation
Drives
High Precision
Power Supplies
Renewable Energies
Trackside
Traction
Support
所有售后 and RMA
所有下载
所有技术问题解答
莱姆联系人
瑞士
LEM International SA
Route du Nant d’Avril 152
1217 Meyrin
瑞士
https://www.lem.com
About Lem
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lem_current_page : 电流传感器
电流传感器
莱姆电子是全球电流传感器先导者，提供已成为行业标准的各种电隔离传感器。这些传感器具有多种尺寸，测量范围从微小电流到 24kA ，并有多种集成选项（汇流排、PCB 安装），是各种应用的理想解决方案。
电流传感器的作用是什么？
顾名思义，电流传感器测量导体中的电流。
它的应用非常广泛，可用于控制汽车发动机的电气参数或电动汽车电池的充电状态。
50 多年来，莱姆电子不断发展专业的技术和电流传感器产品系列，以满足对电流测量解决方案日益增长的需求。凭借其广泛的电流传感器和电压传感器产品系列，LEM传感器可以应用到许多不同的领域，并满足客户的各种电气测量规格需求，无论是精度、带宽还是爬电距离。
这种广泛的电流测量解决方案源于我们多年的经验和专业技术。
使用霍尔效应、磁通门或无磁芯传感器测量电流
电流可通过不同技术的电流传感器测量。
霍尔效应电流传感器（开环或闭环）可提供更宽的测量范围和良好的总体精度，同时避免插入损耗。
气芯传感器的特点是无需磁路即可工作。这种技术也被称为罗戈夫斯基电流传感器，易于使用，可对交流和脉冲信号进行非接触式测量。
磁通门电流传感器技术将带来最高的精度和强大的电流测量性能。
常用的LEM电流传感器系列
HLSR
HLSR 是我们在太阳能行业最受欢迎的产品，尺寸小带来很多好处。
交直流电流测量有 5 个量程： 10A、20A、32A、40A、50A
接入电压基准
低偏移和增益漂移
主要特点
单电源供电 +5 V 或 +3.3 V（2 种不同型号）
绝缘测试电压：4.3 KVRMS / 50Hz / 1 分钟
过孔或表贴安装
查看更多
HAH3DR
HAH3DR 是用于汽车电机控制的三相电流传感器
高精度
线性度非常好
低温漂
主要特点
使用霍尔效应的开环传感器
低电压应用
单极 +5 V 直流电源供电
查看更多
CAB
CAB 是同类电流传感器系列最好的，适用于电动汽车电池管理的充电状态评估
精度高（<0.5%），低偏移（<50mA）
可测量高达 1500A 的双向电流
过流检测
主要特点
基于磁通门的测量
符合汽车质量标准
单极 +12V 电源供电
查看更多
LAH
LAH 系列是用于工业领域的闭环电流传感器
PCB 安装设计，交流和直流电流测量，额定电流范围为 8 to 125 ARMS
2 种不同的紧凑型设计
主要特点
双电源 +/- 12V to +/- 15 V
绝缘测试电压：5 kVRMS / 50 Hz / 1 分钟
电流输出
查看更多
CTSR
CTSR 是一种闭环电流传感器，具有高精度和低温漂，可确保工业应用中的电气安全
2 种标准型号
PCB 安装
测量范围为 0.3 to 0.6 ARMS 的小电流
主要特点
直流、交流、脉冲、漏电流
单电源供电： 0,+5V
非接触式测量，孔径大（直径 20.1 毫米）
查看更多
选择合适的电流传感器需要考虑哪些参数？
选择电流传感器是技术和成本权衡的结果，既要考虑传感器，也要考虑整个相关系统。
在选择电流传感器之前，必须首先考虑预期应用的各个方面。
需要特别注意以下参数：
电气要求：供电电源、峰值测量、响应时间
机械要求：孔径大小、整体尺寸、安装形式、材料
热条件：电流随时间的变化曲线、最大有效值测量、冷却...
环境条件：振动、温度、是否靠近磁场
强烈建议在特定的应用环境中进行测试，以确保电流传感器与应用环境相匹配。
电流传感器应用在哪里？
电流传感器应用于每个用电领域。很多领域都在使用：
电池管理系统
电动汽车供电设备
电源
汽车电机控制
智能电网
工业应用：焊接、自动化、驱动
高精度
可再生能源
轨道
牵引
想进一步了解我们的电流传感器？
请随时查看我们的创新页面，了解电流传感器技术的更多信息。
您还可以使用我们的产品列表及搜索工具，为您的应用选择合适的产品。
我们的团队随时欢迎您的任何咨询。
联系我们
有用的链接
隐私政策
饼干政策
条款和条件
常见问题
联系人
保持知情
全称
电子邮件
通过注册，您同意我们的隐私政策.
Headquarters
LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrin
Switzerland
Tel. : +41 22 706 11 11Fax : +41 22 794 94 78
跟着我们
Experts in current measurement | Current sensor manufacturer | LEM
Experts in current measurement | Current sensor manufacturer | LEM
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Current Sensors
45-90 A
90-180 A
187.5-375 A
375-750 A
750-1500 A
1500-3000 A
3000-6000 A
6000-12000 A
12000-24000 A
Other value
All Current Sensors
Voltage Sensors
25-50 V
50-100 V
100-200 V
200-400 V
400-800 V
800-1600 V
1600-3200 V
3200-6400 V
All Voltage Sensors
Integrated Current Sensors
GO Series
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Route du Nant d’Avril 152
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Switzerland
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TDK AND LEM SET TO COLLABORATE ON TMR-BASED ICS
READ MORE
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CDT is an automotive grade leakage current sensor family also called Residual Current Monitoring (RCM) or Residual Current Detection (RCD) class B
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Leading the world in electrical measurement
LEM engineers the best current and voltage measurement solutions for energy and mobility, ensuring that our customers’ systems are optimized, reliable and safe.
Over our 50 years of history, we have been building a unique expertise and know-how in ASIC design, embedded software, product development, manufacturing and testing and we are proud to provide our customers with the broadest portfolio in the electrical parameters measurement industry.
LEM sensors, transducers and ICS cover all your current and voltage measurement needs from 10 to 2,000 A, and from 10 to 4,200 V.
We manufacture thousands of current sensors, voltage sensors, ic sensors, rogowski coil solutions and energy meters.
The trend for electrification has an impact on all markets and sectors. It increases the need for electrical measurement not only in existing systems but also in new emerging applications. Our solutions to measure and monitor current and voltage play a key role in 6 application areas: motor control, power conversion, electrical safety, battery management, energy monitoring and energy metering.
At LEM we help our customers and society accelerate the transition to a sustainable future. Our current and voltage sensors, our current billing meter and current monitoring solutions (or smart grid sensors) help provide continuous power supply, control energy consumption, and promote renewable energy and contribute to the reduction of electrical consumption within our customers’ systems.
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HOB 系列 | 高带宽电流传感器 | LEM
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lem_current_page : HOB
HOB
A unique combination of short response time and high bandwidth for current sensing in harsh environments
High bandwidth and short response time
Unmatched performance for SiC MOSFET applications
With a market-leading response time of < 200 ns – compared to average response times of around 3 microseconds – the HOB sensors are capable of measuring DC, AC or pulsed current up to 250A.
At the same time, the HOB product family is ideally suited to wide bandgap (WBG) power electronics use cases and applications that require enhanced immunity to the dv/dt (acceleration) issues that SiC power modules are prone to.
Moreover, the HOB parts offer a high bandwidth (> 1MHz), reinforced insulation with dCp/dCl > 11 mm, and an integrated primary conductor with very low resistance of 60 nΩ.
HOB current sensors utilize open-loop Hall effect technology, making them well-suited for a range of industrial applications. Among those applications stand handheld plasma cutters, welders, DC-DC converters, etc.
HOB – Features and benefits
Features
Open loop Hall effect multi-range current transducer
Voltage output
Single power supply +5 V
Galvanic separation between primary and secondary circuit
Low power consumption
Compact design for THT PCB mounting
Factory calibrated
4 models to cover 4 nominal currents of 50, 75, 100 and 130 ARMS
Benefits
Low offset temperature drift
Creepage / clearance > 11 mm
Unique short response time of < 200 ns
High cut-off frequency up to 1 MHz
Ideal for harsh environments with operating temperature range from -40 °C to +105 °C
Lower noise and better dv/dt behavior vs other classical Hall Effect O/L sensors from the market
Enhanced immunity
Typical applications
AC variable speed drives and servo motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies (UPS)
Switched Mode Power Supplies (SMPS)
Combiner box
Solar inverter on DC side of the inverter (MPPT)
Plasma cutter, welding
Charging station
HOB transducers - Standards compliance
HOB Series
IEC 61010-1: 2017
IEC 61010-2-30: 2017
IEC 61800-3: 2017
IEC 61800-5-1: 2007
IEC 62109-1: 2010
UL 508: 2018
LEM HOB – Download & Technical Characteristic
Product
Document
Primary nominal RMS voltage
Supply Voltage range
Op. Temperature
HOB 50-P
Datasheet
50 A
5 to 5
-40 to 105 °C
HOB 50-P/SP1
Datasheet
50 A
5 to 5
-40 to 105 °C
HOB 50-P/SP33
Datasheet
50 A
3.3 to 3.3
-40 to 105 °C
HOB 75-P
Datasheet
75 A
5 to 5
-40 to 105 °C
HOB 75-P/SP1
Datasheet
75 A
5 to 5
-40 to 105 °C
HOB 75-P/SP33
Datasheet
75 A
3.3 to 3.3
-40 to 105 °C
HOB 75-P/SP34
Datasheet
75 A
3.3 to 3.3
-40 to 105 °C
HOB 100-P
Datasheet3D
100 A
5 to 5
-40 to 105 °C
HOB 100-P/SP1
Datasheet
100 A
5 to 5
-40 to 105 °C
HOB 100-P/SP33
Datasheet
100 A
3.3 to 3.3
-40 to 105 °C
HOB 100-P/SP34
Datasheet
100 A
3.3 to 3.3
-40 to 105 °C
HOB 130-P
Datasheet
130 A
5 to 5
-40 to 105 °C
HOB 130-P/SP1
Datasheet
130 A
5 to 5
-40 to 105 °C
HOB 130-P/SP33
Datasheet
130 A
3.3 to 3.3
-40 to 105 °C
HOB 130-P/SP34
Datasheet
130 A
3.3 to 3.3
-40 to 105 °C
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Looking to receive samples or a quotation? Please click on the contact button below and provide us with the information you need on this product series. Our sales team will get back to you shortly.
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LEM International SA
Route du Nant-d’Avril, 152
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Tel. : +41 22 706 11 11Fax : +41 22 794 94 78
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霍尔效应传感器 | LEM 霍尔效应电流和电压传感器
霍尔效应传感器 | LEM 霍尔效应电流和电压传感器
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750-1500 A
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Other value
所有的电流传感器
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100-200 V
200-400 V
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800-1600 V
1600-3200 V
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所有的电压传感器
集成式电流传感器
GO Series
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所有的集成式电流传感器
罗氏线圈
ART 系列
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TEMA4G
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lem_current_page : 霍尔效应电流传感器
霍尔效应电流传感器
LEM 的三种技术（开环、闭环和 Eta）均基于霍尔效应，该技术于 1879 年由美国物理学家埃德温-赫伯特-霍尔在巴尔的摩约翰-霍普金斯大学发现。我们的电流传感器和电压传感器产品系列都采用了这些技术。
霍尔效应 - 电流传感器技术
开环电流传感器（O/L）
开环电流传感器使用最简单的霍尔效应，可提供体积小、重量轻、性价比最优的电流测量解决方案，同时功耗也非常低。
特点
封装尺寸小
测量范围宽
重量轻
功耗低
无插入损耗
运行原理
原边电流 IP 产生的磁通集中在磁芯中，并通过霍尔元件在气隙中进行检测。
霍尔装置的输出经过处理后，在传感器输出端可精确地反映原边电流变化。
开环电流传感器的优势和局限性
开环传感器可测量直流、交流和复杂电流波形，同时提供电气隔离。如前所述，开环电流传感器具有成本低、体积小、重量轻和功耗低等优点。在测量大电流（大于 300 A）时，它们的优势尤为明显。与大多数磁性材料测量技术一样，插入损耗非常低。虽然可能会导致磁芯磁化，产生偏移（称为剩磁或磁偏移），但初级电流过载很容易处理。
与其他技术相比，开环传感器的局限性在于中等带宽和响应时间，温漂较大，以及对功率带宽的限制。
在许多应用中，开环传感器的优势大于局限性，因此建议采用开环解决方案。
开环电流传感器的典型应用
开环电流传感器可用于多种应用中，作为控制回路（例如电流、扭矩、力、速度或位置）的关键元件，或者驱动电流显示。
典型应用包括
变频器和三相驱动器
功率因数校正转换器
电焊设备
电源和不间断电源 (UPS)
电动汽车电机控制
汽车电池管理系统 (BMS)
电力牵引系统
轨旁断路器和整流器保护
能源管理系统
闭环电流传感器 (C/L)
与开环传感器相比，霍尔闭环传感器（也称为霍尔效应 "补偿 "或 "零磁通 "传感器）具有一个补偿电路，可显著提高性能。
特点
频率范围广
总体精度高
响应时间快
温度漂移小
优秀的线性度
无插入损耗
闭环 C/L 运行原理
原边电流 IP 产生的磁场与副边线圈电流产生的互补磁场相平衡。
霍尔装置与辅助电路产生副边补偿电流，精确地反映原边电流变化。
闭环电流传感器的优势和局限性
闭环电流传感器可测量直流、交流和复杂电流波形，同时确保电气隔离。这种技术的主要优点包括：精度和线性度非常好、温漂小、带宽宽、响应时间快。另一个优点是输出电流信号易于扩展，非常适合高噪声环境。同时，闭环传感器还提供电压输出。与开环电流传感器和大多数磁性材料测量技术一样，闭环电流传感器的插入损耗非常低。
另一方面，闭环技术也有其局限性，如副边电流损耗大（必须提供补偿和偏置电流）、尺寸较大（在大电流传感器上更为明显）、结构比简单的开环设计更为昂贵，以及输出和副边线圈电阻上的内部压降导致输出电压有限。
同样，C/L 电流传感器的优势往往大于局限性，尤其精度和响应速度优于其他替代方案。应用需求将有助于确定最佳解决方案。
闭环电流传感器的典型应用
闭环传感器非常适合高精度、宽带宽和快速响应时间的应用。它们通常用作控制回路关键元件的电流、扭矩、力、速度和/或位置控制，也可用于保护半导体器件。
典型应用与开环传感器相同。但在这种情况下，可以期待更高的性能结果：
变频器和三相驱动器
功率因数校正变流器
电焊设备
电源和不间断电源 (UPS)
电动汽车电机控制
汽车电池管理系统 (BMS)
电力牵引系统
轨旁断路器和整流器保护
能源管理系统
霍尔效应 - 电压传感器技术
闭环电压传感器（C/L）
使用相同的 LEM 霍尔效应技术，还可以测量具有电气隔离功能的一次电压。
这些电压传感器基于更灵敏、更精确的电流测量技术，如闭环霍尔效应设计。
与电流传感器的主要区别在于增加了一个多匝数的内部原边线圈，使传感器能够产生必要的安匝来测量较小的原边电流。
特点
高压检测
安全隔离
整体精度高
低温度漂移
优秀的线性度
闭环 C/L 运行原理
通过串联原边电阻而产生的微电流会被原边线圈驱动放大。原边电流 IP 产生的磁场与副边线圈电流产生的磁场相平衡。
霍尔装置和辅助电路产生副边补偿电流，该电流可以精确反映原边电压。原边电阻 (R1) 可以安装在电压传感器中，也可以不安装。
闭环电压传感器的优势和局限性
闭环电压传感器还可以测量直流、交流和复杂的电流波形，同时确保电气隔离。其优点和局限性与闭环电流传感器相同。
因此，闭环电压传感器具有非常高的精度和线性度，低增益漂移，宽带宽和快速响应时间，同时还能提供易于扩展的输出电流信号，非常适合高噪声环境。同样，我们也受益于极低的插入损耗。
在局限性方面，副边电源的电流消耗大，尺寸较大，与开环传感器相比结构更加昂贵，而且输出电压有限。
闭环电压传感器的优点往往抵消了其局限性。闭环电压传感器的精度和响应速度使其成为更值得推荐的解决方案。
电压回路电流传感器的典型应用
闭环霍尔效应电压传感器在许多应用中都被用来检测、监控和控制电压。一个典型的应用是监控变频器的输入、输出和直流滤波电压，在这种应用中，精度和隔离是最重要的。
典型应用包括：
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Route du Nant-d’Avril, 152
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Switzerland
Tel. : +41 22 706 11 11Fax : +41 22 794 94 78
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产品展示
莱姆电子新型高带宽开环传感器HOB-P
作为提供创新技术和高质量电量测量解决方案的专家，莱姆为了帮助解决碳化硅以及氮化镓功率变换器的现有响应时间及频率响应不够的难题，专门开发出的全新HOB系列产品。
莱姆电子新型HMSR DA数字型集成式传感器
莱姆电子推出的新型HMSR DA是市场上第一款Sigma-Delta比特流输出集成式电流传感器。在应用于噪声、失真及干扰影响的环境中时，NMSR DA具有显著的优势。
适用于直流充电桩的智能电表产品
目前DCBM系列推出两个版本，可测量的电流量程分别对应最大400A和600A。为方便充电桩客户提升功率或者改造升级，400A电表和600A电表在结构上尽量保持统一。如图3所示，两款电表最大区别在测量头尺寸，带显示屏的表头部分尺寸相同。
莱姆DCBM直流表、CDSR漏电流传感器
莱姆电子运用创新技术，开发了CDSR系列B型漏电流传感器，通过紧凑外形，及安全灵敏的测量特性，为充电机厂家提供了高性价比的B型漏电流检测方案。
莱姆HMSR电流传感器
新的HMSR产品，集成了原边导体（功率损耗最小化）、一个微型磁芯和一个定制的ASIC，允许直接接入电流进行测量，并且保证一定的绝缘性能。
数字输出传感器（霍尔效应电流传感器）
莱姆完善其数字输出开环霍尔效应电流传感器：HO和HLSR，它们由一个集成了Σ-Δ调制器执行模数（A/D）转换，发出一个1位串行比特流信号。
莱姆LxSR系列霍尔效应闭环电流传感器
新型LxSR系列霍尔效应闭环电流传感器发布于2017年 6 月，基于莱姆专利技术，性能可以与磁通门技术传感器媲美。新产品完全兼容莱姆以前的LTS/LTSR/CAS/CASR/CKSR系列，便于替代。
LEM 罗氏线圈ART
莱姆开发的"ART"系列罗氏线圈可测量10000A及以上的AC电流。ART符合IEC 61869标准下的1级精度，无需电阻或电位器进行补偿，因为这些器件会随着时间出现漂移。
莱姆HO中功率电流传感器
HO系列中功率高性能电流传感器，将额定电流测量扩展到了250A，并提供了多种的安装选项：PCB或面板或原边母排，带有原边穿孔（15 x 8 mm）或原边母排，选择范围更广。
莱姆电子HO系列中功率高性能电流传感器
当今世界，产品智能化趋势越来越强烈。为迎合用户的设计需求，莱姆推出三款新的HO系列中功率高性能电流传感器，将额定电流测量扩展到了250A。这样，用户不必单为传感器提供电源，传感器可与控制电路共用电源。
莱姆HLSR系列电流传感器
HLSR系列电流传感器，为可替代分流器或光耦的一种低成本高性能的解决方案，电流测量高达50A。新的HLSR传感器有五个型号，可满足多种应用需求，例如工业变频器、电机驱动、开关电源及不间断电源，特种电源例如焊接单元、空调、家用电器，以及…
莱姆CTSR系列电流传感器
CTSR系列中的两款传感器可对额定值低至300和600 mARMS且频率高达9.5 kHz的交流或直流漏电流进行测量。CTSR系列传感器经过特殊设计，可满足已经发行的太阳能装置和逆变器方面的最新安全标准（即VDE 0126-1-1、UL 1741和IEC 60950-1）。
莱姆中国-Minisens ASIC传感器
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企业介绍
莱姆电子（中国）有限公司是瑞士LEM集团在中国的独资公司，LEM集团是全球电量传感器的知名制造者，也是电量传感器领域的领导者。 早在1972年，LEM公司在瑞士日内瓦成立，专注于研发和生产基于霍尔原理的电流传感器，并将电流传感器率… 更多>>
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毛建波 在2024/2/27 17:22:00留言
留言类型：我让贵公司产品销售人员联系我,
详细留言：维谛技术想了解一款互感器，请让对接维谛技术的同事联系我
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留言类型：我让贵公司产品销售人员联系我,
详细留言：HLSR系列中可以替换LTS25-NP的产品信息
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详细留言：LT508-S6型号的500A电流信号采集的价格及货期
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详细留言：LT508-S6型号的500A电流信号采集的价格及货期
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LF 系列 | 用于多重安装的精确电流测量 | LEM
LF 系列 | 用于多重安装的精确电流测量 | LEM
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lem_current_page : LF
LF
多种安装方式电流传感器，测量范围100A to 2000 ARMS.
Products
LF
主要特点:
隔离式交直流电流测量，量程从 100 到2000 ARMS
PCB或板式安装
每种设计多种安装方式
紧凑型设计
优势:
根据不同产品选择双电源供电 +/- 12 to +/- 15V or +/- 12 to +/- 20V or +/- 15 to +/- 24V
可垂直或水平安装
电流输出
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LEM International SA
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Tel. : +41 22 706 11 11Fax : +41 22 794 94 78
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LA 55-P | LA55 | 闭环霍尔效应
LA 55-P | LA55 | 闭环霍尔效应
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lem_current_page : LA 55-P
LA55
Closed Loop Hall effect. DC, AC pulse currents' measurements of 25 to 50 ARMS nominal with galvanic isolation.To be PCB mounted. Aperture 12.7 x 7 mm for the primary conductor crossing. Excellent accuracy, good response time, -40°C to + 85°C.
LA 25-P
LA 55-P/SP1
型号细节
LA 55-P
50 ARMS nominal.
系列
LA55
测量类型
电流
额定值
50 A
测量范围
70 A
副边输出信号
电流
副边输出信号值
瞬时 50 mA
原边信号
AC + DC
工作电压
外部供电 DC 双向
工作电压范围
12 - 15 V
精度
0.65 %
工作温度
-40 °C /
85 °C
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闭环霍尔效应
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同系列产品
LA 55-TP/SP27
50 ARMS nominal, Busbar integrated, Measuring range up to 100 A, Turns ratio 1/2000, Potted, 3.6 kVRMS as isolation test voltage, For traction.
LA 55-TP/SP1
50 ARMS nominal, Busbar integrated, Measuring range up to 100 A, Turns ratio 1/2000
LA 55-TP
50 ARMS nominal, Busbar integrated
LA 55-P/SP23
Better initial offset and offset drift.
LA 55-P/SP1
50 ARMS nominal, Measuring range up to 100 A, Turns ratio 1/2000
LA 25-P
25 ARMS nominal with an aperture, -25°C to + 85°C.
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LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrin
Switzerland
Tel. : +41 22 706 11 11Fax : +41 22 794 94 78
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About LEM – Global leader in electrical measurement solutions
About LEM – Global leader in electrical measurement solutions
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lem_current_page : Company Information
About LEM Company
LEM is the market leader in providing innovative and high quality solutions for measuring electrical parameters. Its core products - current and voltage transducers - are used in a broad range of applications in drives & welding, renewable energies & power supplies, traction, high precision, conventional and green cars businesses.
LEM’s strategy is to exploit the intrinsic strengths of its core business, and to develop opportunities in existing and new markets with new applications. It has production plants in Beijing (China), Geneva (Switzerland), Sofia (Bulgaria), Tokyo (Japan) and Penang (Malaysia). With regional sales offices near its customers’ locations, the company is able to offer a seamless service around the globe. LEM has been listed on the SIX Swiss Exchange since 1986; the company’s ticker symbol is LEHN.
Welcome to LEM, a pioneering current sensor manufacturer at the forefront of technological innovation. Headquartered in Switzerland, LEM International serves as the hub for the LEM Group, leveraging our global presence with offices strategically located: LEM Europe GmbH, LEM USA Inc., LEM Electronics (China), LEM Japan KK and many more.
As a leading current transducer manufacturer, we are proud to be a part of the LEM Group, contributing to its legacy of precision and excellence.
At LEM, we transcend boundaries, uniting cutting-edge technology with a commitment to sustainability. Our role extends beyond manufacturing exceptional LEM sensors; we are stewards of a vision that spans continents. With a strong foothold in Switzerland, our international reach reflects our dedication to meeting the diverse needs of clients worldwide.
Navigating the dynamic currents of the market, LEM Holding stands as a pillar of strength, managing investor relations with transparency and integrity. We believe in fostering lasting partnerships and are dedicated to providing the most reliable and innovative current sensing solutions.
Join us on this global journey as we redefine possibilities, one sensor at a time.
About LEM
LEM | Life Energy Motion
LEM is a focused manufacturer and global market leader in producing high-quality transducers for measuring electrical parameters.
A wide range of applications
LEM has the strongest brand recognition in the markets it covers and its products are used in a broad range of applications. Starting with products for locomotives in the seventies, LEM expanded into a vast area of industrial applications, including the following:
variable speed drives for motors
power supplies for industrial applications
AC/DC converters
uninterrupted power supply systems for computers
new innovative energy applications (microturbines , wind and solar power generation)
automotive applications (battery management, start/stop applications for conventional cars and electrical motor controls, battery pack management and embedded chargers for green cars)
Adaptation to clients’ evolving needs
All these applications show LEM’s ability to adapt to rapidly changing industrial trends, such as miniaturization, higher performance levels and a greater degree of application, integration and complexity.
LEM's strategy is to increase its technology leadership, efficiency and production flexibility. At the same time, LEM is committed to maintaining customer focus and operational excellence by running cost-effective and service-oriented production platforms.
LEM is a global organization with production plants in Beijing (China), Geneva (Switzerland), Tokyo (Japan), Sofia (Bulgaria) and in Penang (Malaysia). The Company has sales offices close to its main clients' locations and offers seamless service around the globe.
KEY DATES
COMPANY HISTORY
ORGANIZATION
BOARD OF DIRECTORS
From left to right:
Ilan Cohen
François Gabella
Andreas Hürlimann - Chairman
Werner C. Weber
Ueli Wampfler
Ulrich J. Looser
BOARD COMMITTEES
STRATEGY COMMITTEE
AUDIT AND RISK COMMITTEE
NOMINATION AND COMPENSATION COMMITTEE
Andreas Hürlimann
François Gabella
Werner C. Weber
Ueli Wampfler
Ulrich J. Looser
ORGANIZATION
SENIOR MANAGEMENT TEAM
From left to right:
Andrea Borla - Chief Financial Officer
Bastien Musy - SVP Europe and Americas
Uwe Gerber - SVP Operations
Frank Rehfeld - CEO
Verena Vescoli - Chief Technology Officer
Rodolphe Boschet - Chief People and Sustainability Officer
John Mcluskie - SVP Asia
Values
LEM's Core Values
It is vital for all of LEM to share common values and working principles. All employees understand what LEM wants to achieve so that everyone works together for the same purpose. These values link all LEM employees together and make us a team. They are the common beliefs we share. They are the spirit and intent of everything we do at LEM.
We are customer driven
We succeed by exceeding our customer expectations with a “yes customer” attitude. All our activities are driven by the desire to provide best quality service. We aim to listen, anticipate and respond to our customers’ needs. For this reason, we collaborate closely with them and form true relationships.
We operate with integrity
Basic ethical behavior and integrity in business relationships determine the essence of all our actions. As a company and as individuals, we do the right things right and never compromise our values and principles. We honor our agreements and are transparent in our communications. Our relationships with co-workers, customers, suppliers, partners and the investor community are based on openness and fairness.
We value teamwork
LEM forms a worldwide community. Close collaboration and networking across functions, departments and cultures is critical for the success of the company. We nurture relationships based on sharing, honesty and trust. Accountability is a key factor to our success. We are committed to a workplace where individuals are treated fairly and with respect, where all employees have the opportunity to expand their skills and accomplishments are recognized. Teamwork is more than just working together it is bringing out the best of everyone’s strengths.
We commit
We set our goals high because we know we can reach them. We honor these goals as promises to our customers, our shareholders and ourselves. Our continued success depends on taking responsibility for all our actions. This success is measured by the results we produce in customer satisfaction, sales, profitability, value creation to our shareholders and employee development.
We strive for excellence
No matter how good our products, services, process and results, we are dedicated to making them better. Our customers deserve nothing less than the highest standards of quality. By approaching our daily work with a passion for perfection, rigorously managing risks, taking initiatives, fostering learning and knowledge sharing, we can all make a difference.
We lead innovation
Innovation is the cornerstone of our success and our future depends on it. By thinking out of the box, we adapt to tomorrow’s requirements. We develop a steady supply of innovative technologies, attractive products, new applications and customers. True to our innovative spirit, we aim to be the leaders in our industry and not the followers.
Sustainability
At LEM we help our customers and society accelerate the transition to a sustainable future.
We go beyond being a leading current and voltage sensors manufacturer; we are dedicated to helping our customers and society propel the transition to a sustainable future.
It's not just a part of what we do; it's a fundamental aspect woven into the fabric of our organization.
We continually enhance our internal capabilities and spearhead sustainability initiatives, ensuring transparent reporting on our progress.
We firmly believe that sustainable and ethical practices aren't just noble aspirations—they are integral to creating long-term value for all key stakeholders in society.
This commitment not only ensures the longevity of businesses but also drives the development of intelligent solutions that inspire us and others to strive for better.
Our success is not merely measured in technological advancements; it's deeply rooted in operating within a clear value system, adhering to best practice principles and standards, and closely monitoring Environmental, Social, and Governance (ESG) Key Performance Indicators (KPIs).
ESG – Environmental, Social and corporate Governance
Recognizing the pivotal role of Environmental, Social, and Governance (ESG) performance in shaping our sustainable journey, LEM is dedicated to keeping a meticulous score of our efforts. Our ambition is not only to meet but to continually exceed expectations, fostering the development of internal capabilities and robust sustainability initiatives.
Environmental
At LEM, our commitment to environmental sustainability is deeply ingrained in our practices, and we meticulously measure our environmental footprint through key performance indicators (KPIs). These KPIs include the emissions of greenhouse gases (GhG) in CO2 equivalents, total GhG emissions per CHF generated, and total direct energy usage per FTE (see our annual report). Additionally, our continuous adherence to ISO 14001 ensures that environmental management is an integral part of our operations.
Underlining our dedication to climate responsibility, our senior management team is actively involved in climate-related matters and even incentivised on CO2 reduction, ensuring that environmental considerations are not just met but are integral to our decision-making processes.
Social
The social dimension of our ESG commitment at LEM revolves around fostering a workplace culture that upholds human rights, equality, and professional development. We consider it our duty to ensure that all our activities align with the principles of human rights, creating an environment where every individual feels respected, valued, and empowered. Our aim is to cultivate a workplace where employees can unleash their creativity, innovation, and personal talents while feeling safe and supported.
Governance
At LEM, the governance aspect of our ESG commitment is founded on a bedrock of ethics that permeates every facet of our corporate practices. Our Code of Conduct (CoC) serves as the guiding compass, ensuring that our values are universally understood across diverse sites, cultures, and positions within the organization. We attach great importance to ethical behavior, and to reinforce this commitment, each employee is required to sign the CoC upon arrival, symbolizing their alignment with our core principles.
Policies
Find below more information about LEM Policies:
Labour & Human Rights
UN Global Compact
Compliance
Code of conduct
The LEM Code of Conduct outlines the behavior LEM expects from every stakeholder around the world:
Employees, including temporary workers & managers.
Business partners, including suppliers, subcontractors, consultants, distributors, agents and other third parties.
LEM employees and stakeholders apply these business principles to their daily work and behaviors by providing customers with high-quality products but also by doing things right. This means, abiding by applicable laws, acting honorably and treating each other with respect.
LEM Code of Conduct
Whistleblowing
Whistleblowing plays a crucial role in upholding transparency and ethical conduct.
At LEM, we recognize that fostering an environment where employees, suppliers, and partners feel empowered to raise concerns is essential to maintaining our commitment to integrity and ethical business practices. Our whistleblowing mechanism provides a secure and confidential channel for individuals to report any perceived violations of our Code of Conduct or ethical standards.
Notify us of suspected or actual breaches of laws or company policies, whether within LEM or our supply chain, and regardless of whether you are an employee of LEM.
We will offer feedback while safeguarding the confidentiality of everyone involved, shielding you from mistreatment or retaliation, and handling your report with the utmost confidentiality.
Your assistance aids us in ensuring ethical behavior and uncovering any inappropriate conduct.
Inform us if you suspect something is not right
Terms & Conditions
Sales Terms & Conditions
Title
LEM General Terms and Conditions of Sale English
Amendment to the LEM General Terms and Conditions of Sale regarding the application of German law English
LEM General Terms and Conditions of Sale Chinese
LEM General Terms and Conditions of Sale German
Amendment to the LEM General Terms and Conditions of Sale regarding the application of German law German
LEM General Terms and Conditions of Sale Japanese
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Headquarters
LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrin
Switzerland
Tel. : +41 22 706 11 11Fax : +41 22 794 94 78
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Current Sensors and Transducers | LEM
Current Sensors and Transducers | LEM
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lem_current_page : Current Sensors
Current Sensors
LEM is a leading supplier of current sensors (also called current transducers), offering a wide range of galvanically isolated sensors that have become industry standards. The broad range of sizes, measuring range, from tiny currents to 24kA, and integration options, busbar, PCB mounted, make them ideal solutions for a broad range of applications.
What is a current sensor used for?
As its name suggests, a current sensor measures the flow of current in a conductor.
It can be used in a wide variety of applications, to control the electrical parameters of a locomotive engine for example, or the state of charge of an electric car battery.
For more than 50 years, LEM has grown its expertise and current sensor portfolio to answer the growing demand for current measurement solutions. With its broad portfolio of current sensors and voltage sensors, LEM can address many different applications and meet the various electrical measurement specifications of its customers, be it for accuracy, bandwidth, creepage.
This broad offer in current measurement solutions is the direct results of our many years of experience and expertise.
Measuring current using Hall effect, Fluxgate or Air core sensors
Current can be measured by a current transducer relying on different technologies.
A Hall Effect current sensor (open loop or closed loop) will provide an extended measuring range, good global accuracy while preventing from insertion losses.
The specificity of an air-core sensor is that it is working without a magnetic circuit. Also known as Rogowski current sensors, this technology is easy to use and allows for non-contact measurement of AC & pulsed signal.
The Fluxgate current sensor technology will bring the highest accuracy and a strong performance of the current measurement.
Featured LEM current sensors families
HLSR
HLSR is our best seller in the solar industry. It brings a lot of benefits along with a small footprint.
DC&AC isolated current measurement with 5 ranges: 10 ARMS, 20 ARMS, 32 ARMS, 40 ARMS, 50 ARMS
Access to voltage reference
Low offset & gain drift
MAIN FEATURES
Single supply +5 V or +3.3 V (2 different models)
Isolation test voltage: 4.3 KVRMS / 50Hz / 1min
Through hole (-P) or surface (-SM) PCB mounting models
View more
HAH3DR
HAH3DR is our 3 phase current sensor for automotive motor control
Excellent accuracy
Very good linearity
Very low thermal offset drift
MAIN FEATURES
Open Loop transducer using the Hall effect sensor
Low voltage application
Unipolar +5 V DC power supply
View more
CAB
CAB is the best in class current transducer family for state of charge estimation in EV battery management systems
High global accuracy (<0.5%) and low offset (<50mA)
Measurement of bi-directional current up to 1500A
Over Current Detection
MAIN FEATURES
Fluxgate based measurement
Automotive quality standards compliant
Unipolar +12V battery power supply
View more
LAH
LAH family are closed loop current sensors dedicated to industrial applications
PCB mounting design for isolated AC&DC current measurement of 8 to 125 ARMS nominal
2 different compact designs
MAIN FEATURES
Dual supply +/- 12 to +/- 15 V
Isolation test voltage: 5 kVRMS / 50 Hz / 1min
Current output
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CTSR
CTSR is a closed loop current sensor with high accuracy and very low offset drift over temperature to ensure electrical safety in industrial applications
2 standard models
PCB mounting
Small currents' measurement from 0.3 to 0.6 ARMS nominal
MAIN FEATURES
DC, AC, pulse, small currents' measurements with galvanic isolation
Single supply: 0,+5V
Non-contact measurement with high aperture (Ø 20.1 mm)
View more
Which parameters need to be considered to select the right current sensor?
The selection of a current sensor is the result of a technical and economic trade-off, considering the sensor as well as the whole associated system.
Prior to selecting a current transducer, it is mandatory to consider all aspects of the intended application first.
The following parameters will need specific attention:
Electrical requirements: power supply, peak measurement, response time…
Mechanical requirements: aperture size, overall dimensions, mounting, materials…
Thermal conditions: current profile versus time, maximum RMS measurement, cooling…
Environmental conditions: vibrations, temperature, proximity of magnetic fields…
Performing tests in the specific application environment is also strongly recommended to make sure that the current sensor is the right fit for it.
Where do we find current sensors?
Current sensors are used in every area where electricity is used. And there are lots of domains complying to this:
Battery Management System
Electric Vehicle Supply Equipment
Power supplies
Automotive Moto Control
Smart Grid
Industrial applications: welding, automation, drives
High precision
Renewable energies
Trackside
Traction
Want to know more about our current sensing offer?
Feel free to check our innovation page to know more about the technologies used in our current transducers offer.
You can also user our product list and its intuitive filters to select the right part for your application.
Our team remains available for any inquiry you might still have.
Contact us
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Headquarters
LEM International SA
Route du Nant-d’Avril, 152
1217 Meyrin
Switzerland
Tel. : +41 22 706 11 11Fax : +41 22 794 94 78
Follow Us