ArcPRO-6 - Arc protection
PROBLEMATICS OF arcing short circuits
Every year, several hundred lives are lost due to arcing short circuits and dozens suffer serious injuries. In addition, there are significant property losses caused by these phenomena. Human error is the most common cause (60%) of arc faults. An effective solution in reducing the negative effects of this phenomenon is arc-fault protection based on arc light detection.
Video showing the ArcPRO-6 short-circuit tests
Key protection factor - short circuit duration
As the duration of an arc fault increases, its power output increases exponentially. The impact of such a phenomenon is significant, but it is possible to reduce its impact, particularly if it can be switched off within the first 50 ms.
The self-time of the ArcPRO-6 standalone protection is less than 8 ms, which, after taking into account the arrival time of the breaking pulse at the circuit breaker and the self-time of modern circuit breakers (25-40ms), provides a total short-circuit elimination time of less than 50ms.
The timing indicated above significantly reduces the magnitude of the arc's incident energy and significantly reduces the risk of injury
to those in the vicinity. The solution, has been used repeatedly in real arc flash incidents, effectively reducing thermal and pressure effects to a level that did not cause injury to personnel.
ArcPRO-6 is prepared to work in conjunction with arc extinguishing devices, which can be useful
in circumstances where it is not possible to pulse directly on the circuit breaker.
IDEA OF OPERATION
ArcPRO-6 reduces the effects of an arc fault by rapidly detecting it and then cutting off the power sources - pulsing on the circuit breaker. ArcPRO-6 information can be used as detection criteria for an arc fault in ArcPRO-6:
appearance of intense light radiation
drop of voltage in the protected area
appearance of short-circuit current
ArcPRO-6 allows you to build different logics based on these 3 criteria!
KEY FEATURES
- Modular structure for optimal device configuration for different applications
- Selectivity of outages (even for open type switchgear connections)
- Arc light detection based on front sensors or fibre optic loops
- Possibility to configure the device via a central tool from a computer
- Possibility to use as an additional detection criterion for an arc fault both the voltage drop as well as the occurrence of short-circuit current
REFERENCES | ||
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| The SPIE Energotest arc protection devices are
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BUILDING
ArcPRO-6 has a modular and distributed design. Based on different configurations of ArcPRO-6 components, it is possible to support all types of applications.
Information exchange is provided between the individual security components via the CAN bus using a twisted-pair cable in the screen.
The protection components are powered by 24 V DC (48 V DC in the special version).
Central unit - JC
The most extensive module, equipped with a number of connectors.
- optical signalling in the form of 4 LEDs,
- operator panel in the form of LCD display and 6 function keys,
- CAN bus communication connector,
- RS485 interface connector (MODBUS RTU protocol implemented),
- RJ45/USB interface connector (for configuration via engineering link),
- 5 configurable executive relays with NO contact,
- 1 configurable relay with changeover contact.
Field unit - F4
Unit mounted in each field of protected switchgear.
- 4 pairs of optical inputs (support for loops and front sensors),
- 1 executive relay with NO contact,
- 1 signalling relay with NO contact.
Field unit - F6
Unit with increased number of optical inputs.
- 6 pairs of optical inputs (support for loops and front sensors),
- position status inputs for disconnectors in the distribution. double-system,
- 1 executive relay with NO contact,
- 1 signalling relay with NO contact.
Current measurement unit - MA
Current measurement support from CS measurement modules (20 mA).
Current measurement unit - MV
Voltage measurement support from 100 V voltage transformers.
Internal communication light-copper converter - FOC
Converter to change internal protocol medium CAN-BUS.
Seperator unit - SU
Logic unit for dual system MV switchgear.
Fibre optic loop - FOL
Unshielded fibre optic loop up to 40 metres long.
Measuring module - CS
Current measurement service directly connected to 5A transformers.
Front end detector - FPD
Front end detector with a pair of shielded optical fibres up to 15 metres long.
APLICATIONS
Two-section, single-system MV switchgear, kryterium światło + napięcie
