Siemens Vacuum Recloser 3AD
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CtlI Siemens Vacuum Recloser 3AD Ca ta log HG 11.42 ■ ■ , , Edition 2018 Medium-Voltage Equipment

Siemens Vacuum Recloser 3AD · Siemens HG 11.42 · 2018

Contents Siemens Vacuum Recloser 3AD Medium-Voltage Equipment Catalog HG 11.42 • 2018 Special functions and applications 19 Standards, ambient conditions, altitude correction factor and number of operating cycles 20 Product range overview 21 Product Selection Ordering data and configuration example Selection of primary ratings Selection of controller Selection of additional equipment Selection of accessories and spare parts Additional components for increased performance 37 3EK7 specifications according to IEC 38 3EK8 specifications according to IEEE 39 Technical Data Electrical data,...

Siemens Vacuum Recloser 3AD · Siemens HG 11.42 · 2018

Switch unit: Recloser principle Recloser switching cycle Design of the switch unit Pole assemblies Operating mechanism Mechanical lockout Nameplate Controller: General description 9 - Protection functions and protocols 12 - Data acquisition via communication interface 13 - Software 13 - Protection functions and protocols 16 - Data acquisition and monitoring 17 Special functions and applications 19 Altitude correction factor 20 Number of operating cycles 20 Product range overview 21 Siemens Vacuum Recloser 3AD ■ Siemens HG 11.42 ■ 2018

Description General Siemens vacuum recloser 3AD Three-phase switch unit design 38 Single-phase switch unit design 27 The recloser consists of two main components: The switch unit, where Siemens offers its customers two designs – 27 kV or 38 kV – and the controller as protection and control unit. The latter is located inside the control cubicle (CC), which also contains the electronics and auxiliary circuits. 3AD vacuum reclosers combine the latest technology in vacuum switching and electronic control. They are based on decades of experience in circuit-breaker design, protection relay...

Description Switch unit Recloser principle Reclosers are used in overhead lines and in substations. Like circuit-breakers they are capable of switching normal and fault currents. They are equipped with sensors and a controller being the protection and control device. In case of a temporary line fault, they can trip and reclose up to four times, thus avoiding longer network interruptions. As outdoor devices they are pole or structure-mounted and exposed to environment and weather. Extensive testing beyond the recloser standard has proven the suitability for application in various climates to...

Switch unit Lockout handle - pushed in (operational position) Vacuum Recloser Order code 3AD3222-1AA61-2AA2 Auxiliary Voltage V, OMADE IN GERMANYO Operating mechanism Magnetic actuator The recloser is operated by a magnetic actuator enabling the recloser cycle, i.e. the high number of switching operations within a short period of time. The actuator is a bi-stable system, locked in the end positions by permanent magnets. If not in operation, the magnet coils do not consume any power. The operating mechanism housing is made of galvanized mild steel with a special coating for outdoor...

Controller general description, controller 7SR224 Controller general description A controller is the heart of the recloser and responsible for the switching process. Furthermore, all protection functions make sure that a safe and controlled switching process is executed. Siemens offers for recloser application two different variants of controllers, the Siemens Reyrolle 7SR224 and the SIPROTEC 7SC80 which are defined in the following pages. All main differences are described in the table below. Differences between SIPROTEC 7SC80 & Reyrolle 7SR224 Controller 7SR224 The controller is based on...

Description Controller 7SR224, protection functions Protection functions (in order of ANSI numbering) 21 Fault locator (Distance relay) The fault locator is a stand-alone and independent function which uses the line and power system parameters set in other functions. In the event of a fault, it is addressed by the protection functions. 25 Synchronizing Synchronizing is used with three-pole manual closing and auto-reclose operations to ensure that voltages are within safe limits before allowing the close operation to proceed. The ARGUS-M controller provides settings for voltages, phase and...

Description Controller 7SR224, protection functions Protection functions (contin.) (in order of ANSI numbering) 67 / 50SEF Sensitive earth-fault Provide Directional Instantaneous or Definite Time (DTL) earth-fault protection, with independent settings for pickup current and time delay. Four elements are provided. Elements can be inrush-inhibited. 67 / 51SEF Sensitive earth-fault Provide Directional Instantaneous or Definite Time (DTL) earth-fault protection, with independent settings for pickup current and time delay. Four elements are provided. Elements can be inrush-inhibited. 60CTS CT...

Description Controller 7SR224, protection functions and protocols Protection functions (contin.) (in order of ANSI numbering) Loss of voltage LOV automation Additional optional functionality is available to provide control of Normally Open Points (NOP) and other reclosers in the distribution network to provide an automation sequence of load restoration following a persistent fault. The sequence is started by the loss of voltage detection, for an extended period of time, following a complete but unsuccessful autoreclose sequence, which has caused lockout of a recloser at any point in the...

Description Controller 7SR224, data acquisition and software Data acquisition via communication interface Sequence of event records Reydisp Evolution Up to 5000 events are stored and time tagged to 1 ms esolution. r For communication with the relay via a PC (personal computer) a user-friendly software package, Reydisp Evolution, is available to allow transfer of relay settings, waveform records, event records, fault data records, instruments / meters and control functions. Reydisp Evolution is compatible with IEC 60870‑5-103. Fault records The last 10 fault records are displayed on the...