Movable Indoor AC Metal-enclosed Switchgear
NXSAFE550 movable metal-enclosed switchgear (the switchgear) is mainly used for 3-phase AC (7.2-12kV) single busbar and single busbar sectionalized system. Its tight structure makes it applicable to the users’ terminal power supply system.
- HERTZMAN
- ZHEJIANG
- Information
Movable Indoor AC Metal-enclosed Switchgear
STANDARDS
| STANDARDS | IEC standards | |
| Swich cabinet | NXSAFE550 | IEC62271-1 |
| Device | Vacuum circuit breaker | IEC62271-100 |
| Isolation and earthing switch | IEC62271-102 | |
| High-voltage fuse | IEC60282 | |
| Voltage detector | IEC61243-5 | |
| Protection grade | IEC60529 | |
| Insulation | IEC60571 | |
| Inductor | Current transformer | IEC60044-1 |
| Voltage transformer | IEC60044-2 | |
PARAMETERS
| Items | Unit | Value |
| Rated voltage | KV | 12 |
| Rated frequency | Hz | 50 |
| Rated power frequency withstand voltage(1min) | KV | 42/48(fracture) |
| Rated lightning impulse withstand voltage(peak) | KV | 75/85(fracture) |
| Rated current | A | ≤1250 |
| Rated short-duration power-frequency withstand voltage(4s) | KA | ≤31.5 |
| Rated peak withstand voltage(peak) | KA | ≤80 |
| Main circuit loop | μΩ | ≤100+CT |
| Enclosure protection grade | IP4X | |
| Between chambers protection grade | IP2X |
Circuit breaker chamber
Cable chamber
Busbar chamber
Low voltage chamber
Technical features
The cabinet shape is such designed to best ensure the safety of operators and on-duty staff.
All operations cannot be carried out until the cabinet door is closed. The switchgear is fitted with independent chambers and pressure leakage channels.
The switchgear’s chambers, door lock, parts, etc., all of which are of arcing resistant, could ensure the safety of personnel outside the switchgear when there is any arcing fault inside.
Diaphragm grade PM (metal closing status under continuous earthing).
The active safety door of contact box could ensure the safety of repairmen.
“Five-prevention” interlocking mechanism.
All active doors could be earthed reliably.
Earthing switch with Level E2 short circuit opening/closing capacity.
Tight structure ensures switchgear economy
Width of standard switchgear: 550mm
Depth of standard switchgear: 1,230mm
Armored design and IP4X protection requirements
Standard modular design idea ensures high reliability of power supply
Metal-enclosed air insulation type
Functional unit combinations
Standard chambers
Compatibility of circuit breakers
Friendly HMI which complies with the standards of global power supply service agencies and users, is easy to install and operate
Maintenance and operation in front of switchgear
Sectionalized screen busbar simplifies cabinet splicing
Cable chamber, which is designed behind the switchgear, simplifies cable connection
Outline dimensional drawing
Primary drawing and panel diagram of typical project
