Active Member
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[China]
Address: No. 25 Street , Hanghai Road, Zhengzhou,Henan,China
Contact name:Ken Chan (English)
Knkong Electric Co.,Ltd |
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JYL-KK Type 6-35kV Overhead Fault Indicator
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 | 6～35kV |
| Neutral grounding method | Various grounding methods are available | |
| Wiring type | Overhead insulation and bare wires 35mm²～300mm² | |
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 | 0～200A,measurement accuracy:±2A 200A～600A,measurement 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 | 430～480MHz |
| Communication medium | Plastic optical fiber | |
| Communication distance | ＞20m | |
| Mechanical properties | Weight | ＜2kg |
| Protection level | Acquisition unit IPX7；Collection unit IPX5 | |
| Working environment | Temperature | -40℃～70℃ 10%~ |
| Humidity | 100% | |
| Service life | Operating | ＞8 years |
| Failure-free time (average) | MTBF≥70000h | |
