NTPA81 Intelligent Arc Protection Device-Natus (Changzhou) Electric Systems Co., Ltd

Manufacture

High voltage switch cabinet

NRTs 40.5kV gas insulated switchgear NES-40.5kV Metal Armored Removable Switchgear NES 12kV Metal Armored Removable Switchgear NRTs SF6 gas insulated ring main unit NRTem environmentally friendly gas insulated ring main unit NRT solid insulated ring main unit XGW-12 outdoor box type switchgear Box type substation (10kV)
Low voltage switch cabinet

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High and low voltage components

NTAA81 Air Circuit Breaker NTMA21 Molded Case Circuit Breaker NTMA22 Large Molded Case Circuit Breaker NTBM11 Miniature Circuit Breaker NTP081 Self-resetting Over-voltage Protector NTDT81 Dual Power Switch(PC Grade) NTDT82 Series NTDT83 Series NTDD81 Series Isolation Switch NTII81 Smart Meter NTPA81 Intelligent Arc Protection Device NTQC51 Capacitor NTQR5 Series Tuning Reactor NTIF81 Power Factor Controller NTDS51 Thyristor Switch NTQF81 Active Power Filter NTQV81 Static Var Generator NTCA51 Series AC Contactor NTRT51 Series Thermal Relay NTPM81 Motor Protector NTSA81 Series Soft Starter NTSA82 Series Soft Starter NTFA81 Series Inverter NTMM81 Series Smart Measurement Switch NTJC51 Series Quick Connect Socket NTJC52 Quick Connector Socket NTJC53 Pole-Mounted Quick Access Device NTJC54 Quick Access Device

System composition:

As a busbar type protection, one 6NTHG-K arc protection main unit and one (or more) 6NTHG-C arc protection acquisition units are required.

NTPA81-Carc protection acquisition unit provides 8-channel arc-light acquisition input and 8-channel relay output, which corresponds to the input signal one by one to realize the function of hard fault location.
The main unit is separated from the acquisition unit. The main unit is installed in the incoming cabinet, and the acquisition units are installed in the feeder cabinet.
Between the main unit and the acquisition unit, the arc signal is connected by optical fiber; the data communication is connected by serial port.
The main unit can provide dual-port communication mode, support RS485, Ethernet port and other interface methods, and support various communication protocols such as Profibus, ModBus@RTU, CAN, IEC103, IEC104, etc.
The main unit supports two rated input currents 1A or 5A.

NTPA81-K arc protection main unit is the core component of the arc protection system. It is responsible for the collection, measurement, calculation and logical judgment of the input quantity, and realizes various protection logics of the system, communication with the monitoring system in the station, self-checking and other auxiliary functions.NTPA81-C arc light collection unit This unit is used as the collection unit of arc protection, provides 8 arc light collection inputs and 8 outputs, adopts the probe method to collect the arc light, and transmits the signal to the main unit through the optical fiber, and has a communication port with the main unit. unit to transmit data. When there are multiple acquisition units, the arc light signal is transmitted serially between the acquisition units, and finally transmitted to the main unit.

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