ABB 1VCF750138803

REF542 multifunctional protection and measurement device
The REF542 series relay protection measurement and control device integrates protection, measurement, control, and status monitoring, and is suitable for user terminal substations (stations) with voltage levels of 35kV and below, and can achieve distribution network automation.
function
The feeder protection and measurement device REF 542plus integrates functions such as protection, control, measurement, and status monitoring, and is suitable for distribution network automation. This device can be used not only for feeder protection, but also for transformer and motor protection and control, or separately for switchgear control. Flexibility and scalability enable REF542plus to implement almost all quadratic schemes, even those that traditional methods cannot achieve. Whether equipped with a backend system or not, REF542plus is a good solution for digital control and protection of medium voltage switchgear. The product consists of a separate host and human-machine interface (HMI), connected by shielded twisted pair cables. The multifunctional REF 542plus protection and measurement device can provide satisfactory solutions for any air insulated switchgear or gas insulated switchgear.
Application scope
The application areas cover industries such as power, water conservancy, transportation, petroleum, chemical, coal, metallurgy, data centers, and new energy. Suitable for various application scenarios such as overhead lines, cable lines, power transformers, distribution networks, electric motors, backup automatic switching, differential protection, and fast switching systems.
Advantages and features:
 ● 8 * 4 pages with 32 editable LEDs
 ● Dedicated and secure electronic key
 ● A large number of optional protection functions to meet any application scenario
 ● The time scale accuracy of the fault recorder and event recording reaches 1ms
 ● Separating HMI and host installation greatly increases application flexibility
 ● One HMI can serve several hosts
 ● Large screen LCD display, capable of using multiple languages
 ● Optional 0/4... 20mA analog input module
 ● Editable bar indicator for intuitive viewing of switch load status
 ● The editable emergency circuit breaker opening button allows for circuit breaker opening without being limited by the selected control mode
 ● Can edit a large number of logical functions to meet the needs of each special requirement
 ● Self diagnostic function with continuous checking of hardware and software module status
 ● Has powerful control and automation functions

 ● Capable of monitoring and improving power quality

outline dimension
 ● Panel opening size: width 240 ± 1 mm * height 140 ± 1 mm
 ● Outline drawing

 -Standard chassis

-Widening the chassis

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