Nanjing Nanrui PCS9611 line microcomputer protection device

NegotiableUpdate on 01/19

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The Nanjing Nanrui PCS9611 line microcomputer protection device $r $n can select whether to exit the current protection of the section by switching to pure overcurrent protection through the control word "PT disconnection current protection" when the bus PT is disconnected, or to directly exit the current protection. The "current protection" referred to here refers to the current protection sections that have been locked with compound voltage or directional locking. The current protection section that does not have either overvoltage or directional locking is not affected by this control word.

Product Details

Nanjing Nanrui PCS9611 line microcomputer protection device

Operation alarm:

l Total signal of the accident

l CT Wire break alarm

l busbar PT Wire break alarm

l Control circuit disconnection alarm

l TWJabnormal alarm

l line PT Wire break alarm

l Overload alarm

l zero sequenceSection III alarm

l ground alarm

l Spring energy storage failure alarm

l Frequency abnormality alarm

Measurement and control function:

l 15 Customized remote signaling input for the road

l A set of remote control circuit breakers/combine, synthesize(Up to three additional remote controls can be provided as an optional option)

l IamTheIbmTheIcmTheUA TheUB TheUC TheUAB TheUBC TheUCA TheU0 TheFTheP TheQ TheCOSφWaiting for remote measurement

l event SOErecord

Nanjing Nanrui PCS9611 line microcomputer protection device

overcurrent Section I, overcurrent section II, and overcurrent section III are fixed with definite time protection, and an independent overcurrent inverse time protection is set upThis device Integrated together 3 Over current inverse time limit protection with various characteristics, users can choose according to their needsChoose any type of inverse time protection feature. Overcurrent reverse time The limit protection feature is listed as a fixed value item in the device's fixed value menu“overcurrentInverse time characteristic”.

Directional components

The positive terminal should be on the busbar side. When the direction points towards the line, the spirit of the directional componentThe sensitive angle is 45° , adopt 90°Wiring method. direction The components and current components are connected in a phase based starting mode. The directional component has a memory function that can eliminate nearby three-phase signalsDeath of directional components during short circuit District. The access device CTCharacteristics as shown in the figure 1.2-1（A ）As shown.

The overcurrent protection of the device is equipped with control words[Locking in the direction of flow]To control the direction of each section of overcurrent protection. When the control word is‘1’When, Indicating the activation of directional locking components; When the control word is0At that time, without proper guidanceTo lock.

Grounding protection (zero sequence overcurrent protection)

When the device is used in ungrounded or low current grounded systems, the zero sequence current in the event of a ground faultWhen the flow is very small, the grounding test function can be used To isolate the fault. This situation requires that the zero sequence current be supplied by an external dedicated zero sequence current CT Introduction is not sufficient for self-produced software.

When the device is used in a low resistance grounding system and the grounding zero sequence current is relatively large, it canTo isolate faults using direct tripping method. phase As expected, this device provides three sections of zero sequence overcurrent protection and one independent section of zero sequence overcurrent inverse time protection, among which zero sequence overcurrent protection Section I, zero sequence The fixed time limit protection for segment II and zero sequence segment III, and the selection of inverse time limit characteristics for zero sequence overcurrent inverse time limit protection are the same as those for overcurrent inverse time limit protection mentioned aboveTime limit.

zero sequenceSection III can be selected through control words to determine whether to trip or alarm.

When the zero sequence current trips and reports, it can be triggered by an external dedicated zero sequence current CT Introduction or self-produced software can also be used(Auxiliary parameter There are fixed values in the numbers“Zero sequence current self-produced”control word).

Overload protection

The device is equipped with an independent overload protection, which can be selected by the control word to alarm or trip. Overload export jump Lock and reclose after closing.

overcurrent/Zero sequence acceleration protection

When the power line is put into operation or restored, there may be faults on the line. In this situationIn such cases, it is usually desirable for protective devices to be as effective as possible Can quickly remove faults instead of using delayed overcurrent protection to remove them. This device is equipped with an overcurrent sectionAcceleration protection and a segment of zero sequence Accelerate protection to achieve accelerated fault removal.

The reclosing acceleration can be selected as either pre reclosing acceleration or post reclosing acceleration. If you choose to accelerate before, put it into operation before the reclosing action; If acceleration is selected, it will be activated after the reclosing action 3 In seconds.