ACM Product Surge Arrester Digital Leakage Ampere Meter
Surge arrester digital leakage ampere meter mainly monitors the metal oxide Surge arrester in the substation of 35kV and above voltage level. The device has the function of periodic automatic monitoring and detection of the state parameters of the metal oxide arrester, such as the full current and the number of movements. With long-term stable working ability, with power failure without loss of data, self-diagnosis, self-reset function; With fault alarm function.
Features：
High precision through-core transformer, and completely isolated from the primary circuit, high safety;
Distributed measurement structure, that is, local measurement, digital transmission, through RS485 digital signal transmission to the background;
High measurement accuracy, better than the national standard requirements;
Integrated structure design, three-layer shield design, high reliability;
Use LED display to display monitoring data, convenient observation;
The protection grade is IP66.
Technical parameters：
1. General product parameters：
Table1 Technical index
Product characteristics | Specifications |
Ambient temperature | -40℃～+70℃ |
Relative humidity | 5%～95% |
Atmospheric pressure | 80 kPa～110kPa |
Voltage level | 35kV and above voltage class |
Residual voltage test | zero |
High current shock resistance test | 100kA |
Square-wave impulse current tolerance test | 600A |
Measuring range | 100uA～5mA |
Measuring error | ±（reading*1％+5uA） |
Measurement repeatability | RSD＜0.5% |
Discharge counter | 0～999 |
Data update | Every 5 second |
Data storage capacity | 10000 entries |
LED display | 100uA～5mA |
Power supply mode | Pa：AC 220（1±10%）V， 50（1±5%）Hz |
Device power consumption | <10VA |
Protection grade | IP66 |
Mounting type | screws |
Weight | 3.6kg |
2. Electromagnetic Compatibility
Testing standards | Grade |
GB/T 17626.2 Electrostatic Discharge（ESD） | Level 4 |
GB/T 17626.3 Radio frequency electromagnetic field radiation | Level 3 |
GB/T 17626.8 Power Frequency Magnetic Field | Level 5 |
GB/T 17626.9 Pulsed magnetic field | Level 5 |
GB/T 17626.10 Damped Oscillatory Magnetic Field | Level 5 |
GB/T 17626.11 Voltage Sags | Level 3 |
GB/T 17626.4 Electric fast transient pulse group | Level 4 |
GB/T 17626.5 Surge (impact) | Level 4 |
GB/T 17626.6 Conducted disturbances induced by radio frequency fields | Level 3 |
Table 2 Electromagnetic compatibility project
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