回到首页
显示全部分类 铁路车辆上的高压和电流测量 返回

铁路车辆上的高压和电流测量

主要应用事实

领域

铁路行业 | 铁路车辆

应用

监测和控制牵引电机，监测牵引变流器或车载逆变器中的母线电压

测量参数

高达 ±4500 V DC / ±3000 V AC，连续隔离电压高达 4800 V AC/DC，隔离测试电压高达 20 kV AC

主要要求

SIL2/SIL3 安全

最紧凑的铁路车辆用高压变送器

P45000 系列变送器可用于在重型车辆、尤其在铁路车辆上测量高直流和交流电压。应用范围包括监测和控制牵引电机、监测牵引变流器或车载逆变器中的母线电压。

电压测量输入与输出和电源高度隔离。电流输出与市面上常见的控制输入兼容。外壳的安装方式灵活：直立或者平卧，螺丝固定，或者卡装在 35 mm DIN 导轨上。这些设备甚至可以堆叠安装，即使在很窄的空间内也能实现。

此外，产品支持运行具有功能安全要求的各种应用，这在同类产品中尚属首次。这款高压变送器已获认证，可用于 SIL 2 系统和 SIL 3 冗余运行。例如能可靠识别是否存在危险高电压。

为何选择 Knick?
P45000 是全球首款通过 SIL 2/3 功能安全认证的高压 SIL 变送器。 可以堆叠安装，空间需求极小，安装方式灵活：DIN 导轨，平卧或直立

在铁路车辆上进行测量的产品亮点

P45000 – 高压测量

P45000 高压变送器专为包括柴油电动机车在内的所有直流和交流铁路车辆而设计，可测量高达 4500 V DC 和 3000 V AC 电压。测试电压 20 kV AC，增强隔离电压高达 4800 V DC 和 3700 V AC

P51000 – 通过分流电阻测量电流

高压变送器 P51000 可通过从一安培到千安培的分流电阻实现过载安全的电流测量。即使是强电磁场也不会影响测量结果。这样就能高精度检测电流。

P52000 – 电压测量

结构紧凑的高压变送器，用于高达 4800 V 的电压测量。高压触点和接线端子都有封装。与其他部件之间不存在相互作用风险。在端子台之间不需要额外的空间：P52000 能够绝对安全工作。

P52000VPD – 电压检测器

电压检测器 P52000VPD (Voltage Presence Detector) 可检测 50 至 4200 V 之间的电压。将输入信号与阈值进行比较，得到的二进制信息被电隔离并传输到输出电路。如果输入电压超过设置的阈值，半导体继电器就会打开，并发出输入端存在电压的信号。

相关产品

P45000 High Voltage Transducer | Input up to ±3000 V overrange up to 150% | For use in SIL2 systems, redundantly in SIL3
P45000 High Voltage Transducer | Input up to ±3000 V overrange up to 150% | For use in SIL2 systems, redundantly in SIL3
商品编码:

P45000

P51000 High Voltage Transducer | Input up to ±125 V | Current measurement | Energy metering
P51000 High Voltage Transducer | Input up to ±125 V | Current measurement | Energy metering
商品编码:

P51000

P52000 High Voltage Transducer | Input up to ±4800 V | Voltage measurement | Energy metering
P52000 High Voltage Transducer | Input up to ±4800 V | Voltage measurement | Energy metering
商品编码:

P52000

P52000 VPD High Voltage Transducer | Input max. 4200 V DC or AC peak | Voltage presence detection
P52000 VPD High Voltage Transducer | Input max. 4200 V DC or AC peak | Voltage presence detection
商品编码:

P52000VPD

P16800 Speed Signal Doubler | Input speed sensor signal 10 … 33.6 V DC (max.35 V) | Safe decoupling acc. SIL4, safe transmission acc. SIL2
P16800 Speed Signal Doubler | Input speed sensor signal 10 … 33.6 V DC (max.35 V) | Safe decoupling acc. SIL4, safe transmission acc. SIL2
商品编码:

P16800

P16000 Pulse Frequency Conditioner | Input speed sensor signal up to 20kHz | Safe decoupling acc. SIL3
P16000 Pulse Frequency Conditioner | Input speed sensor signal up to 20kHz | Safe decoupling acc. SIL3
商品编码:

P16000

相关工业和应用

直流牵引变电所中的电压和电流测量
用于直流供电的牵引变电所（高达数兆瓦）及其所供电的电网分段必须具备有效的短路保护。保护机构必须尽快可靠中断大电流，并限制短路功率。
铁路行业手册


铁路特定应用和产品解决方案总览

最新博客文章

9月 2024

Interface Technology

Hydrogen

Stack and String Voltage Measurement in Electrolyzers and Fuel Cells
Voltage, current and temperature measurement in electrolyzers with P40000 series high voltage transducers

9月 2024

Interface Technology

适用于 Knick 变送器的新型 30 mV 分流电阻
Knick 从现在起为其高压变送器的附件产品系列增添具有 30 mV 电压降的分流电阻
Innovations at InnoTrans 2024

9月 2024

Interface Technology

Exhibition, InnoTrans

Innovations at InnoTrans 2024 for rolling stock and DC traction power supply
At InnoTrans 2024 Knick presents electrical measurement solutions for rolling stock and DC traction power supply applications

12月 2023

Company

|

Interface Technology

|

Process Analytics

Knick Austria - direct customer contact in Austria from 2024
Reorganization of sales in Austria and new contacts in the field of process analytics and interface technology

5月 2022

Interface Technology

Energy

Energy storage - the handshake between renewable energy and electric vehicles
Energy storage technology such as battery and hydrogen are critical for growth and continuous development of renewable energy and e-mobility.

2月 2022

Interface Technology

P52000VPD, Voltage

P52000VPD 电压检测器能够可靠检测高达 4200 V 的直流电压
新型电压检测器 P52000VPD (Voltage Presence Detection) 能够可靠监控高压应用领域，在达到指定阈值时向下游设备控制器发送信号。

9月 2021

Interface Technology

USA, Exhibition

Knick Interface at Battery and Electric & Hybrid Vehicle Technology Expo
Knick will be showcasing high-voltage electrical measurement and signal conversion products.

5月 2021

Interface Technology

VariTrans A20340 – 仅需一个隔离放大器的标准信号倍增
The A20340 can output a standard input signal to four calibrated and galvanically isolated outputs in parallel.

4月 2021

Interface Technology

Hydrogen

Electrical measurement and process analytics for hydrogen production
Knick products optimize hydrogen production in the process and in electrolyser operation.

3月 2021

Interface Technology

High-Voltage Transducer, USA, P44000

Condition Monitoring of High-Voltage Motors
Having an active predictive maintenance campaign in place for large rotating equipment can be a key strategy for maximizing process uptime.

3月 2021

Interface Technology

Pulse frequency conditioner for speed sensors
The new P16000 from Knick is a pulse frequency conditioner that converts frequency signals from speed sensors into standard signals.

11月 2020

Interface Technology

High-Voltage Transducer, Voltage, P42000D2

全球最小传感器，高达±2200 V
Knick的VariTrans P 40000系列能对从±50 mV到±3600 V的电压，以及从±100 mA到±20 kA的电流进行可靠测量。经过验证的ProLine系列现在已经扩展到包含传感器P42000D2，它安装在Din导轨上，模块设计紧凑，测量高达2200 V的直流电压。

8月 2020

Interface Technology

DC

宽范围电源对于直流电气测量的重要性
Knick生产的众多直流电气测量产品都包含通用的，也称为宽范围电源。这意味着它们将工作在一个相对较宽的电压范围窗口内，如20…253V，交流或直流。

7月 2020

Interface Technology

High-Voltage Transducer, DC, P29000

Measuring Photovoltaic Degradation
Photovoltaic (PV) array degradation is an important aspect to consider for system design and installation.

6月 2020

Interface Technology

High-Voltage Transducer, USA

Electrical Measurement Solutions: Control from 480 to 4800 Volts
Voltage and current transducers from Knick bring true control to electrical measurement applications across a wide-range of industries.

6月 2020

Interface Technology

High-Voltage Transducer

Benefits of High Voltage Transducers versus Instrument Transformers
When a need arises to step voltage in a circuit either up or down for purposes of power transmission or distribution, there is no doubt that transformers are essential.

11月 2019

Interface Technology

DC, USA, Current

分流器和霍尔效应的技术对比
在许多系统中，为了确保性能和安全，需要测量较大的直流电流。两个例子是静态励磁和轨道牵引动力。这些电流的测量通常采用两种主要原理之一：配有mV级变送器的分流器电阻或霍尔效应传感器来反馈。

3月 2018

Interface Technology

MTBF beyond 3000 years: A snap hook for your plant
Failure of equipment on the plant floor can lead to considerable and costly disruption.

1月 2018

Interface Technology

UL

Knick Products Comply With UL - What Does That Mean?
There are different assessments and approaches to reach an adequate level of safety. Manufacturers are typically on the “safe” side, if they comply with recognized standards.

11月 2017

Interface Technology

High-Voltage Transducer, P50000

High-voltage transducer offers more safety on railway vehicles
The requirements placed on railway vehicles have increased significantly in recent years. Products for rolling stock need to ensure a higher level of functional safety than ever before.

2月 2017

Interface Technology

P41000TRMS

True RMS Measurement with P41000TRMS
Traditional millivolt AC transducers are very susceptible to errors due to their poor insulation and are only designed for pure sinewave measurement.

2月 2017

Interface Technology

P22400, SIL

Functional safety and maximum availability can go together
The requirements on operational and safety-related circuits are continuously growing.