Modular solutions for flexible arc flash protection Main characteristics • Modular structure The design of VAMP 321 allows insertion of new hardware which adds performance and functionality to the system. The basic unit has two dedicated arc sensor inputs and is scalable from standard to high-end arc flash protection systems The system can be configured by the end-user with the VAMPSET software tool. Events and disturbance recordings are easily evaluated using a PC with USB connection • Event logs and disturbance recording A world first, Vamp introduces event and disturbance functionality in an arc protection system to enhance the pre and post fault analysis of the • Compatible with existing systems The VAMP 321 relies on the same VAM I/O units, cabling and sensors as the company's other renowned arc flash protection systems. • Engineered for the most demanding environments The new mechanical structure comprises a robust cast aluminium casing. Adjustable fixtures provide flexible installation to every power system environment. IP54 protection is achieved when flush mounted • Proven technology Developed in close cooperation with customers, the VAMP 321 combines the reliable technology of Vamp's 50 and 200 series and that of the VAMP 221 arc flash protection system The VAMP 321 has five communication ports, four of which are intended for a SCADA interface. Supported protocols are IEC 61850, Profibus DP ModbusTCP, DNPTCP, Modbus RTU, SPA, IEC 60870-5-101 and Modern society heavily depends on an uninterrupted supply of electric power. Prolonged power outages cause loss of business to the power supplier and loss of production to the power consumer. Regardless of how safe a power system is, faults do occur. An arc flash protection relay is a protective device used to maximise the safety of personnel and minimise the damage to the installation in the most hazardous power system fault situations Fast arc flash protection increases operator safety in case of an arc fault occuring in The faster the operating time of the protection system, the lesser the damage caused by the arc Schneider Electric's Vamp range is the pioneer in the field of arc flash protection with close to 10,000 systems in service world-wide designed with user-friendliness

When traditional time-grading or blocking based protection coordination principle is used, it may not provide fast enough protection of substation faults. Further, high-impedance type earth-faults may cause prolonged operation times of earth-fault relays leading to the significant release of arcing energy These facts pose a considerable risk to operation personnel and economical assets.

Arc Protection 03 VAMP 321 Selective and Flexible Arc Flash Protection Solutions for Low and Medium Voltage Systems Modern motor control centers (MCC) equipped with arc flash protection provide ultra-fast arc protection for the switchgear, limiting the possible arc flash fault to a minimum. The point sensors give an accurate location of the fault thus the required repair for the MCC’s is fast and the power can be restored without fault location time delay. The central unit trips both the incoming LV circuit breaker and the circuit breaker up-stream. The nature for an arc flash fault can be...

The selectivity requirement of the arc flash protection is dependent on the switchgear construction and the importance of the power distribution. The more important the supplied power, the more selective arc flash protection The left side of the medium voltage switchgear, as seen in the picture, has various protection zones. Cable termination has its own zone and is tripped should the fault occur in the cable compartment. One VAM12LD unit is able to trip up to three sub- zones selectively. The circuit breaker and busbar compartments belongs to another zone As the distribution system does not...

Characteristics and Highlights of the VAMP 321 CENTRAL UNIT • 3-phase current, zero-sequence current • Event logs, disturbance recording and real-time clock • High speed output, HSO: 1 ms (typically) • Operation on simultaneous current and light or on light only • Informative display • Communication with SCADA • Four normally open trip contacts (option) • One normally open and one change over alarm contact • Programmable operation zones • Continuous system self-supervision • Circuit breaker failure protection (user The auxiliary supply, CT wiring, trip and alarm outputs as well as modular cables...

POINT SENSOR I/O UNIT • Auxiliary supply and communication via modular cable • Ten (10) point arc sensor connections • Continuous supervision of sensors • Connection of portable arc sensor • Indication of the sensor channel and trip relay activation • Two communication ports for central unit • Labelling for customised arc sensor channel text • Flush mounting • HMI indication available on door closed SELECTION TABLE FOR VAM I/O UNITS POINT SENSOR I/O UNIT • Three selective trip output contacts for dedicated sensors • Auxiliary supply and communication via modular cable • 10 point arc sensor connections...

POINT SENSORS Easy installation and replacement Enables fault location indication Surface mounting Tube mounting Continuous self-supervision FIBRE ARC-SLm SENSORS Standard fibre Length from 1 to 70 meters Cost effective when many compartments Fibre sensor • Multicore cable ^ SENSOR MOUNTING PLATES • Wall mounting to VA1 DA-x sensors (no extra holes in the switchgear) ncnr mm intinn nlato /-. _____._____. ___ Sensor mounting plate Sensor mounting plate Note 1: X = cable length (m) Note 2: X = fibre length (m) For more details, see accessories page 12. Provides additional detection of arc flash...

Technical data Environmental tests: Mechanical tests:

Technical data VAMP 4R trip multiplier relay n* - number of active sensors

VAMP 321 Order Codes D = 2 x IGBT High speed outputs (Excludes I/O Card III, slot 4) Analog measurement card [A, V] Display type Dl nominal activation voltage