Fault Indicator for Power Distribution Line
Product Specifications
Product Description
Applicable to 110KV and below neutral ungrounding or via arc suppression coil grounding overhead line,
used to detect short circuit and earth fault.Main Feature
Wire electricity acquisition:High permeability materials and special circuit design, reduce the magnetic medium eddy consumption energy by the current limiting groove. When the wire load current >3A the wire start to take electricity.
Short circuit criterion:Using standard fast tripping, over current definite value method, parameters can be adjusted online, inhibits flow transmission and feedback power transmission.
Also it can star the adaptive load current overflowing mutation as short circuit criterion.
Earth fault criterion:Detect the first half wave peak current, the earth fault maximum current and the value&variation of circuit steady voltage. The parameters can be adjusted online, reliable and sensitive detection.
Prevent mis-operation:Prevent no-load switch on rush current misoperation;
Prevent no-fault branch switch on misoperation
Prevent refusal-operation:Metal material has good permeability performance. Combines the small signal sampling digital processing technology, the small load current and micromutation current can be correct indicated without refusal operation.
Rust-proof:All metal parts are stainless steel materials, use special anti-rust technology.Technical Parameter | Power supply | 3.6V/6 Ah one-time long-life lithium battery |
| Electricity acquisition power | 50uA~20mA/3.6V(corresponding to load current for once 3A~600A) |
| Static average power consumption | ≤35uA/3.6V(RF in the state of receiving waiting) |
| Dynamic average power consumption | ≤50uA/3.6V(RF sending data every 5 minutes) ; |
| Diameter of wire | 8~40mm(insulated wire, bare conductor) |
| Line load | 0~600A(Default), 0~100A, 0~2000A, 0~4000A |
| Voltage class | ≤35KV |
| Quick trip/over current definite value | 0~700A(phase sequence),0~70A(zero sequence),
Stepping 1A(parameters setup can be online) |
| Quick trip/over current delay time | 0~9.99S,stepping 0.01S(parameters setup can be online) |
| Maximum short circuit current | 40KA |
| Communication frequency(RF) | Center frequency 433MHz, can be divided into 10~20 wireless frequency band, two way communication |
| Communication distance(RF) | < 50m |
| Voltage linearity | >±5% |
| Current measuring accuracy | ±3%(load current ≥20A)or
±3A(load current < 20A) |
| Environment Temp. | -40ºC~80ºC |
| IP Grade | IP65 |
| Action times | >3000 times |
| Environment humidity | ≤95% |
| Operation altitude | ≤2000m |
| Weight | ≤500 g |
| Lifetime | ≥10 years |
COMPANY PROFILE
Zhejinag Wellsun Intelligent Technology Co., Ltd, established in 1992, which registered capital is RMB 100 millions. The company headquarters is located in Tiantai, Zhejiang Province, covering area is 35, 000. Wellsun experimental instrument investment valued RMB 20 millions, include EMC and environmental testing laboratory, as well as all other advanced laboratory and equipments.
Wellsun own strong R&D and production capacity, yearly production capacity is 8 millions smart meters and 2 millions collection equipments.
Wellsun product series covers smart electric meters, smart water meters, smart capacitor, smart metering products (water, electricity, gas, heat) collection and management terminals, smart metering products (water, electricity, gas, heat) management system. Wellsun products are authorized globally, we have obtained certificate include KEMA, STS, DLMS, etc.
Wellsun always insist on the service promise"Think What the Customers Thinking, Do What The Customers Urgently Want, Solve What the Customers Troubles, Meet What the Market Demand".
With 20 years effort and development, Wellsun has become one of the leaders in domestic smart metering products and system integration industry.
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