1. Product Overview
Featuring a withdrawable drawer-unit design, this product offers enhanced functional flexibility. In addition to providing basic power distribution and protection capabilities, it enables the live withdrawal and maintenance of individual circuits without disrupting the operation of the overall power distribution system. With its modular layout, the unit facilitates easy capacity expansion and ensures a high level of safety, making it ideally suited for applications—such as industrial production and automation control—where high maintenance efficiency is a critical requirement.
2. Application Scenarios
Suitable for power distribution sites with high requirements for power supply reliability and maintenance efficiency—such as industrial plants, workshops, high-rise buildings, commercial complexes, and industrial parks.
3. Model Designation
G (Enclosed Switchgear), C (Withdrawable Type), S (Senyuan Electric System—Joint Design Identifier); specifically, a withdrawable-type low-voltage switchgear featuring a modular design and the capability for live circuit replacement, making it ideally suited for power distribution environments with a high degree of automation.
4. Product Features and Functions
Withdrawable Drawer Unit Design: The drawer units can be safely withdrawn and serviced while energized, without disrupting other circuits or the operation of the overall power distribution system. This significantly reduces downtime required for maintenance.
Modularity and Standardization:The drawer units feature standardized dimensions and interfaces, allowing for flexible configuration based on load requirements. This facilitates easy capacity expansion and retrofitting, making the system adaptable to power distribution networks of various scales.
Multiple Mechanical Interlock Protections:Equipped with comprehensive interlocking functions—including safeguards against accidental breaker opening or closing, preventing the insertion or withdrawal of drawers under load, and preventing accidental entry into energized compartments—the system ensures safe and reliable operation.
High Short-Circuit Withstand Capability:Both the main busbars and the drawer units have undergone rigorous short-circuit testing. With a short-time withstand current rating reaching up to 50kA (for 1 second), the system is capable of withstanding the severe impacts of system short-circuit faults.
Flexible Incoming and Outgoing Line Options:Supports both top-entry/bottom-entry for incoming lines and top-exit/bottom-exit for outgoing lines, allowing for flexible physical layout and installation to suit specific on-site civil engineering conditions.
Convenient Maintenance and Low Cost:Drawer units can be replaced quickly, and faulty circuits can be isolated individually for repair without the need to de-energize the entire busbar section, resulting in low operation and maintenance costs.
Compatibility with Automated Power Distribution:Can be configured with intelligent instrumentation and communication modules to interface with DCS and PLC systems, thereby enabling remote monitoring and automated control of the power distribution network.
5.
| Parameter Item | GCS (Drawer-Type) |
|---|
| Rated Operating Voltage Ue | AC 380/400V (690V) |
| Rated Insulation Voltage Ui | 660/1000V |
| Rated Frequency | 50/60Hz |
| Main Busbar Rated Current | 630~4000A |
| Vertical Busbar Current | 400~1000A |
| Maximum Current of Drawer Unit | 630A |
| Rated Short-Circuit Breaking Current | 30/50kA |
| Short-Time Withstand Current (1s) | 30/50kA |
| Peak Withstand Current | 63/105kA |
| Impulse Withstand Voltage | 12kV |
| Protection Level (IP) | IP40 (Internal IP20) |
| Applicable Standards | GB7251.1, JB/T9661 |
6.Referenced Standards
This product is strictly designed, manufactured, and inspected in accordance with the following technical standards:
GB 7251.1《Low-voltage switchgear and controlgear assemblies — Part 1: General rules》
JB/T 9661 《Low-voltage withdrawable switchgear assemblies》
GB 14048.1 《Low-voltage switchgear and controlgear — Part 1: General rules》
GB 14048.2《Low-voltage switchgear and controlgear — Circuit-breakers》
IEC 60439-1《Low-voltage switchgear and controlgear assemblies — Part 1: Type-tested and partially type-tested assemblies》(Corresponding International Standard)