Knkong Electric Co.,Ltd

Professional MV & LV switchgear panel manufacturer and supplier

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Home    Fault indicator    DYX-KK type fault indicator

DYX-KK type fault indicator

The ring network cabinet online monitoring equipment is mainly suitable for the automation transformation of the traditional ring network cabinet and the switchgear. While realizing two remote (remote signaling, telemetry) functions, detect and locate the position of short circuit and ground fault at the same time, shorten the power outage time and scope. Not only is important for improving the re
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Product Introduction

The ring network cabinet online monitoring equipment is mainly suitable for the automation transformation of the traditional ring network cabinet and the switchgear. While realizing two remote (remote signaling, telemetry) functions, detect and locate the position of short circuit and ground fault at the same time, shorten the power outage time and scope. Not only is important for improving the reliability of power supply, but also an indispensable technology for building an intelligent grid.

Advantages

Sampling the zero-sequence current synthesis algorithm, canceling the traditional zero-sequence transformer design, synthesizing the zero-sequence current by detecting the phase sequence to identify the single-phase ground fault, and effectively solving the situation where it is not convenient to install the zero-sequence transformer;
5A self-powered, the acquisition unit uses high magnetic permeability material CT, combined with low-power system design, to ensure that the primary current 5A achieve battery-free full-function operation, improve reliability;
Instead of using the traditional one-time battery power supply scheme, the three-level power architecture of CT power supply, supercapacitors, and non-rechargeable lithium batteries is adopted to guarantee the reliable operation of the equipment;
Electronic current transformer for current and ground electric field detection, It has great linearity of test data and is not affected by wire diameter, thus guarantee test accuracy;
Collection unit indicates failures locally and centrally, eliminating the need to install display panels in every interval;
The energy opening CT is made of anti-rust and anti-corrosion materials, supplemented by a high-level cutting process to ensure that the outdoor environment provides sufficient power for the equipment;
Both the collection unit and the acquisition unit can be controlled remotely and wirelessly;

Technical Parameter

Item

Parameter

 

Applications

Voltage

635kV

Neutral grounding method

Various grounding methods are available

Wiring type

Overhead insulation and bare wires 35mm²300mm²

 

Collection unit power supply

Main power

PT/CT

Backup power

Rechargeable battery: Lithium iron phosphate or lead-acid colloid battery is dependent on necessary.

All hardware design is compatible for them both.

 

Acquisition unit power supply

Main power

Line self-powered (5A full-function operation)

Backup power

Disposable lithium battery 3.6V, 8.5Ah

Time of  duration of the supercapacitor battery> 12 hours

Static power dissipation

Acquisition unit

≤40uA

Collection unit

≤0.2VA

Telemetry accuracy

 Current

0200Ameasurement accuracy±2A

200A600Ameasurement accuracy±1%

Sampling frequency

4096Hz

Fault detection

Recognizable fault type

Short circuit between phases, various single-phase grounding

Instantaneous faults and permanent faults

Recognition minimum recognition time

0.2s

 

Line status indication

Indication

Bright LED

Flashing time after an outage

2000h

Fault reset method

Timed automatic reset can be set from 1 to 48 hours

Power-on automatic reset and remote manual reset

 

Local communication

Frequency band

430480MHz

Communication medium

Plastic optical fiber

Communication distance

20m

Mechanical properties

Weight

2kg

Protection level

Acquisition unit IPX7Collection unit IPX5

Working environment

Temperature

-40℃70℃ 10%~

Humidity

100%

Service life

Operating

8 years

Failure-free time (average)

MTBF≥70000h

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