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ACM Series Digital Surge Arrester Leakage Current Meter
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●Built-in high-precision through-core current transformer, completely isolated from primary circuit, with high safety.
●High measurement accuracy, exceeding industry standard requirements.
●Multi-layer isolation design for enhanced reliability.
●Local LCD display for real-time data monitoring, convenient for observation.
●Supports wired (RS485) or wireless (LoRa, WAPI) communication for signal transmission to backend systems.
●Integrated battery enables on-site acceptance without external power supply.
●Protection rating of IP67.
1.Technical Specifications for the Digital Arrester Condition Monitor：
|
Product Characteristic |
Description |
|
Operating Temperature Range |
-40℃～+70℃ |
|
Relative Humidity |
5%～95% |
|
Atmospheric Pressure |
80 kPa～110kPa |
|
Applicable Voltage Level |
35kV and above |
|
Residual Voltage |
Wired version: No residual voltage Wireless version: <3% of the configured arrester's residual voltage, max ≤3.0kV |
|
High-impulse Current Withstand Test |
100kA |
|
Square Wave Impulse Current Withstand Test |
800A |
|
Total Current Measurement Range |
100uA～50mA |
|
Total Current Measurement Error |
±(Standard reading × 1% + 5 μA) |
|
Total Current Repeatability (RSD) |
RSD＜0.5% |
|
Operation Count |
0～9999 |
|
Data Update Frequency |
4 seconds |
|
Data Storage Capacity |
10000 entries |
|
Power Supply Method |
Wired version: DC 24V power supply Wireless version: Leakage current/Battery |
|
Protection Rating |
IP67 |
|
Installation Method |
Screw fixation |
|
Weight |
2900g(Wired version) 3300g(Wireless version) |
2.Electromagnetic Compatibility Performance (EMC)
|
Testing Standard |
Level (Wired Version) |
Level (Wireless Version) |
|
GB/T 17626.2 Electrostatic Discharge (ESD) |
Level 4 |
Level 4 |
|
GB/T 17626.3 Radiated Radio-Frequency Electromagnetic Field |
Level 3 |
Level 3 |
|
GB/T 17626.8 Power Frequency Magnetic Field |
Level 5 |
Level 5 |
|
GB/T 17626.9 Pulsed Magnetic Field |
Level 5 |
Level 5 |
|
GB/T 17626.10 Damped Oscillatory Magnetic Field |
Level 5 |
Level 5 |
|
GB/T 17626.11 Voltage Dips |
Level 3 |
N/A |
|
GB/T 17626.4 Electrical Fast Transient/Burst |
Level 4 |
N/A |
|
GB/T 17626.5 Surge |
Level 4 |
N/A |
|
GB/T 17626.6 Conducted Disturbances, Induced by RF Fields |
Level 3 |
N/A |
Application of ACM Digital Leakage Ampere Meter for Surge Arresters
The ACM Digital Leakage Ampere Meter is a core intelligent monitoring device designed for surge arresters, which is widely used in power systems and industrial fields. It realizes real-time, high-precision monitoring of leakage current and operation status of surge arresters by virtue of advanced digital sensing technology and reliable data transmission capability, breaking through the limitations of traditional manual inspection. As an important part of the digital transformation of power equipment, it plays an irreplaceable role in ensuring the safe and stable operation of power grids and reducing operation and maintenance costs.
The application scenarios of the ACM Digital Leakage Ampere Meter are extensive and targeted. It is mainly applicable to surge arresters of various voltage levels (6kV to 1100kV) in grid substations, including 330kV, 500kV and 220kV key transmission and transformation stations, which are the core application fields of the product[5]. It is also suitable for new energy power generation systems (solar, wind power) and industrial power supply fields such as chemical plants, data centers and high-rise buildings that require high power supply reliability. In addition, it can adapt to harsh working environments such as offshore, tropical high temperature and cold areas, and is applicable to both new surge arrester installations and retrofitting of old equipment, solving the monitoring difficulties caused by harsh environment and high equipment location[6].
The key roles of this product in various application scenarios are multi-dimensional and critical. Firstly, it achieves real-time and high-precision monitoring, which can accurately collect leakage current data, including total current, resistive component and harmonic content, with a measurement accuracy of ≤±5%, and record the number of lightning strike actions of surge arresters, providing accurate data support for equipment status evaluation[3]. Secondly, it realizes active early warning and safety protection. When the leakage current exceeds the preset threshold or the three-phase current is seriously unbalanced, it will send an acoustic and optical alarm in time to prevent equipment damage and power grid accidents caused by internal damp, valve sheet aging and other defects of surge arresters[4]. Thirdly, it optimizes operation and maintenance efficiency, supports remote data transmission through RS485 or wireless communication, connects to the power grid operation and maintenance management platform, reduces on-site manual inspection workload by more than 60%, shortens inspection time, and realizes condition-based maintenance[6].
In conclusion, the ACM Digital Leakage Ampere Meter has broad application prospects with its strong environmental adaptability and comprehensive monitoring functions. It not only improves the reliability of surge arrester operation and the safety of power grids, but also reduces operation and maintenance costs, providing strong technical support for the digital and intelligent development of modern power systems, and is an indispensable core monitoring device in power safety protection.