MRXH-10 Arc Suppression and Resonance Elimination Cabinet

The MRXH-10 Arc Suppression and Resonance Elimination Cabinet significantly enhances power system stability by effectively eliminating resonance and suppressing arc grounding overvoltages. This innovative cabinet limits various overvoltages to safer levels, outperforming traditional arc suppression coils while making them optional. With compact design for easy installation in high-voltage switchgear, it operates reliably from -40°C to +60°C and supports voltages up to 35kV. The MRXH-10 cabinet reduces insulation failures and MOA breakdown rates, providing comprehensive protection for substations and power plants in both new and retrofit projects.

product details

Type Designation

1	Company Abbreviation-MINGRI ELECTRIC CO., LTD.
2	Arc Suppression and Resonance Elimination Cabinet
3	Rated Voltage: 6, 10, 35 (kV)
4	Rated Current (A)
5	Optional Feature X (Microprocessor-Based Faulted Line Selection Device)

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Technical Parameters

Parameter	Unit	Value
Rated Frequency	Hz	50
Rated Voltage	kV	6, 10, 35
Rated Current	A	31.5 - 200 (For some high-end models, up to 630A)
Breaking Capacity Level	kA	≥10 ( For some models, up to 40kA)
Thermal Withstand Current	s	4
Insulation Level	kV	≥5
Protection Grade	-	IP4X
Faulted Line Selection Function	-	Supports multiple circuits (e.g., 28 circuits)
Communication Interface	-	RS485
Altitude	m	≤2000
Temperature Range	°C	-40 to +60

Product features

1. This device significantly enhances the stability of the power system by limiting various overvoltages to a lower level, substantially reducing insulation failures and cascading faults caused by overvoltage.
2. It provides comprehensive overvoltage protection, effectively suppressing atmospheric, switching, and arc grounding overvoltages. Its performance in limiting arc grounding overvoltage surpasses that of arc suppression coils, making their installation optional in systems equipped with this device.
3. By eliminating persistent arc grounding overvoltages, the device markedly improves grid operating conditions and reduces the failure rate of metal oxide arresters (MOAs).
4. An independent microprocessor-based earth fault line selection device is available as an option to ensure higher accuracy and reliability in fault line detection.
5. Featuring simple selection and easy use, its protection mechanism is independent of the system's single-phase ground capacitance current. Its performance remains unaffected by changes in grid operation mode or expansion, making it suitable for power grids of various scales.
6. With a compact structure and easy installation, the device is integrated into a single high-voltage switchgear cabinet, replacing the potential transformer cabinet. Its small size and simple commissioning make it suitable for substations, power plant auxiliary systems, and both new and retrofit projects, with compatibility for existing arc suppression coil systems.