This system mainly includes arc light protection and circuit breaker failure protection.
The system is a modular system that includes the main control unit, current unit, arc extender, arc relay, and arc unit.
Detection sensitivity（200nm-400nm) : 0.01mW/cm²
The arc protection is grouped based on current acquisition units, with a total of 272 arc probes that can be tuned and associated to any set of current signals. When the arc light unit transmits the light signal from the arc light sensor to the main control unit, and at the same time, the current starting element acts and the arc light protection acts. The device can choose the arc light signal action as the action judgment.
The failure start protection is initiated by the arc protection action, and the detection current element judges the return. The current element is composed of phase current, zero-sequence current, and negative-sequence current, which can be set as “input” or “exit” respectively through the “soft strap”. Failure start protection can be set to choose whether to pass through the closed position of the circuit breaker to block.
The arc protection system is a modular system that includes the main control unit, current unit, arc extender, arc relay, and arc unit, th schematic diagram is shown in the figure below:
It can effectively filter out all kinds of ordinary visible light and 100% shield the infrared region, and can effectively distinguish the arc light of 200nm-400nm (ultraviolet region, near ultraviolet region, part of purple light).
Measuring angle: 0°～210° measuring angle, compared with other arc light sensors whose maximum measuring angle is only 120°, truly achieve no dead angle measurement.
Detection sensitivity（200nm-400nm) : 0.01mW/cm²
Easy installation: The installation interface adopts FC type or directly connects to the secondary terminal.
MTBF: 100,000 hours
Current Parameters | Number of interfaces: 4 sets of current input interfaces; 12 current channels |
Accuracy: 0.01A | |
Arc Parameters | Number of interfaces: 32 arc sensor interfaces |
Accuracy: the error does not exceed 20% | |
Step size: stepless adjustment | |
Input quantity: 16 units | |
Output Quantity | 10 units |
Trip Exit | 6 electromagnetic relay outlets, 4 fast relay outlets |
Action Speed | Fast relay ＜4ms, electromagnetic relay＜6ms |
Communication Port | 2-way Ethernet or 2-way CAN network, 103 protocol |
Working Power | AC: 85~265V DC: 220V or 110V |
Overall Power Consumption | ＜15W |
Interface | 2 arc sensor ports |
AC Input | 3 channels current |
Trip Exit | 2 electromagnetic relay outlets |
Action Speed | Fast relay ＜4ms, electromagnetic relay ＜6ms |
Communication Port | 2-way Ethernet or 2-way CAN network, 103 protocol |
Operation Environment | -20℃~＋55℃ |
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Since its establishment, Lafaelt Electric has focused on comprehensive solutions for power quality and energy management. It has excellent quality in designing, researching, producing and manufacturing.
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