T: +86-180-67981129
E:sales@pino-electric.com
E:sales@pino-electric.com
Makou Industrial Park, Yongxiu County, Jiujiang city, Jiangxi Province, China
Model: GRM6-24 Brand: Pino Electric Rated Voltage: 24KV Rated Current: 630A Phase: Three MOQ: 1pcs
Overview
The GRM6-24kV Ring Main Unit (RMU) is a gas-insulated medium voltage switchgear widely used in power distribution networks. This product integrates all medium voltage functional units, enabling the connection, power supply, and protection of ring or radial network transformers. The GRM6 series features a compact design, making it suitable for various complex network configurations, especially in applications involving renewable energy.
Operating Conditions
Altitude: ≤4000m (when the equipment is running at an altitude of 1,000 meters or more, please especially indicate it for adjustment of charge pressure when manufacturing).
Ambient temperature: Max. temperature: +40℃; Min. temperature: -25℃; mean temperature in 24h does not exceed 35℃.
Ambient humidity: the mean relative humidity in 24h does not exceed 95%; the mean monthly relative humidity does not exceed 90%.
Installation environment: There is no explosive or corrosive gas in the ambient air, and there is no severe vibration or shock applied in the installation site.
Seismic capacity: 8 magnitude scales.
Special conditions: The special operating conditions different from normal operating conditions must be agreed by the manufacturer and the end user. For particularly harsh operating environments, please contact the manufacturer and supplier.
Product Features
Compact Design
Modular design with a compact structure, occupying minimal space, suitable for installations with limited space.
Flexible combination of functional units to meet the diverse needs of users.
High Reliability
Utilizes SF6 gas insulation technology, offering excellent electrical insulation and arc extinguishing capabilities, ensuring long-term stable operation.
Key components are sourced from internationally renowned brands, guaranteeing quality and low failure rates.
Operational Safety
Equipped with comprehensive mechanical and electrical interlocks to prevent misoperation, ensuring operator safety.
Clear indication of open/closed positions, facilitating operation and maintenance.
Intelligent Monitoring
Compatible with intelligent monitoring systems, enabling remote monitoring and control, enhancing the intelligence level of power grid operations.
Supports data collection and analysis, assisting users in condition monitoring and fault prediction.
Ease of Maintenance
Designed with ease of maintenance in mind, with components that are easy to disassemble and replace, reducing maintenance costs and time.
Provides detailed maintenance manuals and technical support to ensure users can quickly resolve issues.
Eco-Friendly and Energy Efficient
Uses environmentally friendly materials, complying with international environmental standards, reducing environmental impact.
Optimized design to reduce power loss and improve energy utilization efficiency.
Wide Applicability
Suitable for various harsh environments, including high humidity and high salinity conditions.
Widely used in distribution networks, industrial power systems, infrastructure construction, and other fields.
| NO. | Item | Unit | Load switch unit | Combined apparatus unit | Circuit breaker unit | ||
| 1 | Rated voltage | kV | 24 | 24 | 24 | ||
| 2 | Rated frequency | Hz | 50 | 50 | 50 | ||
| 3 | Rated current | A | 630 | 80 (depending on the current of fuse) | 630 | ||
| 4 | Rated insulati on level | 1 minute power frequency withstand volage | Phase-to-phase, phase-to-earth | kV | 65 | 65 | 65 |
| Open contacts | 79 | 79 | 79 | ||||
| Open contacts circuit | 2 | 2 | 2 | ||||
| Lighting impulse withstand voltage | Phase-to-phase, phase-to-earth | 125 | 125 | 125 | |||
| Open contacts | 145 | 145 | 145 | ||||
| 5 | Rated short-time withstand current | kA/s | 25/4 | - | 25/4 | ||
| 6 | Rated peak withstand current | kA | 63 | - | 63 | ||
| 7 | Rated short-circuit making current | kA | 63 | Limited by high-voltage fuse | 63 | ||
| 8 | Rated short-circuit breaking current | kA | - | Limited by high-voltage fuse | 25 | ||
| 9 | Rated transfer current | A | - | 1200 | - | ||
| 10 | Rated active load breaking current | A | 630 | - | - | ||
| 11 | Rated closed-ring breaking current | A | 630 | - | 630 | ||
| 12 | Mechanical life | Load switch / circuit breaker | Times | 5,000 | 5,000 | 10,000 | |
| Disconnect switch / earthing switch | 3,000 | 3,000 | 3,000 | ||||
| 13 | Loop resistance | μΩ | ≤150 | - | ≤150 | ||
| 14 | Rated charge pressure (gauge pressure at 20℃) | MPa | 0.04 | 0.04 | 0.04 | ||
| 15 | Annual relative leakage rate of gas | Yearly | ≤0.01% | ≤0.01% | ≤0.01% | ||
| 16 | Protection grade | Cabinet body | IP4X | IP4X | IP4X | ||
| Gas box | IP67 | IP67 | IP67 | ||||
Outline and Installation Dimensions
Infrastructure diagram
