描述
BECKWITH M-3425A是一款综合发电机保护继电器，由美国贝克威电气设计和制造，主要用于发电、输电、配电等电力系统保护领域。以下是其产品详情：
功能特点
保护功能全面：具备多种保护功能，包括同步检查（带有相角、δV和δf，基本包带有死线/死母线选项）、过励磁（V/Hz）、磁场接地（64F）和电刷抬起（64B）、相欠压（27，包括M-3921磁场接地耦合器）等。
满足标准：超过IEEE C37.102和标准242对发电机保护的要求，能为各种原动机、接地和连接类型的发电机提供保护。
应用灵活：可编程I/O允许元件链接到各种输出接点，并加以封锁控制（接触检测）输入，可满足各种逻辑保护的规定。元件套件可以配置为满足不同发电机（感应、同步或异步）的保护要求，包括不同大小、连接类型和接地类型的发电机。
部分技术参数
相距离：具有三区姆欧特性，范围为0.1至100.0Ω，增量为0.1Ω，精度为0.1Ω或5%圆直径（#1、#2、#3为0.5至500.0Ω，增量为0.5Ω或5%）。
三次谐波欠压、中性点启动：范围为0.10至14.00V，增量为0.01V，精度为0.1V。
正序电压闭锁：范围为5至180V，增量为0.5V。
定时过流启动（A相）：范围为0.20A至240.00A，增量为0.01A，精度为0.1A。
瞬时中性点过流启动：范围为0.1至240.0A，增量为0.1A，精度为0.1A（0.1至48.0A时，增量为0.02A）。
相过压启动：范围为5至180V，增量为0.5V或0.5%，精度为0.8V或0.75%。
频率累积：高带#1范围为50.00至67.00Hz，增量为0.01Hz。
The BECKWITH M-3425A is a comprehensive generator protection relay designed and manufactured by BECKWITH Electric Co.,Ltd.,primarily used for power system protection in power generation,transmission,and distribution.The following are its product details:
Features
Comprehensive Protection:Offers a variety of protection functions,including synchronization checks(with phase angle,δV,andδf;the basic package includes dead wire/dead bus options),overexcitation(V/Hz),field grounding(64F),brush lift-off(64B),and phase undervoltage(27,including the M-3921 field grounding coupler).
Standard Compliance:Exceeds the requirements of IEEE C37.102 and Standard 242 for generator protection,providing protection for generators of various prime mover,grounding,and connection types.
Flexible Applications:Programmable I/O allows components to be linked to various output contacts and have control(contact detection)inputs blocked to meet various logic protection requirements.Component kits can be configured to meet the protection requirements of different generators(inductive,synchronous,or asynchronous),including generators of different sizes,connection types,and grounding types.Partial Technical Parameters
Phase Distance:Three-zone ohmic characteristic,range 0.1 to 100.0Ω,increment 0.1Ω,accuracy 0.1Ωor 5%of circle diameter(#1,#2,#3:0.5 to 500.0Ω,increment 0.5Ωor 5%).
Third Harmonic Undervoltage,Neutral Point Start:Range 0.10 to 14.00 V,increment 0.01 V,accuracy 0.1 V.
Positive Sequence Voltage Lockout:Range 5 to 180 V,increment 0.5 V.
Timing Overcurrent Start(Phase A):Range 0.20 A to 240.00 A,increment 0.01 A,accuracy 0.1 A.
Instantaneous neutral point overcurrent start-up:Range 0.1 to 240.0 A,increment 0.1 A,accuracy 0.1 A(0.02 A increment for 0.1 to 48.0 A).
Phase overvoltage start-up:Range 5 to 180 V,increment 0.5 V or 0.5%,accuracy 0.8 V or 0.75%.
Frequency accumulation:High band#1 range 50.00 to 67.00 Hz,increment 0.01 Hz.
ABB Model: GBU72 3BHE055094R0002 Model: 3BHE055094R0002 GBU72 Model: GBU72 Model: 3BHE055094R0002 Model: 3BHE031197R0001 Model: 3BHB030310R0001 Model: 73BHE055094R0002 GBU72 Model: 73BHE055094R0002 Model: GBU72 Model: ABB PCS6000 PRODUCT FAMLIY ABB 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101
