Description
General
Solid-insulated Ring Main Units use Solid insulating material as the Main insulating medium.
The vacuum arcing chamber and its conductive connection, isolating switch, grounding switch, main bus, branch bus and other leading circuits are single or combined with solid insulating medium and encapsulated into one or several fully insulated and fully sealed modules with certain functions, which can be recombined or expanded.The human accessible module surface is coated with a conductive or semi-conductive shield layer and can be directly and reliably grounded ring network cabinet.
Product feature
1. No gas leakage and greenhouse effect risk, good environmental performance, maintenance-free;
2. Epoxy resin whole cast fully sealed insulation structure, insulation performance is reliable, strong environmental adaptability;
3. Modular design, small size, flexible products, conducive to on-site assembly;For remote areas with poor road traffic conditions, it can be separated and transported, and then assembled, making the transportation and installation methods diversified.
Specifications
Technical data sheet
isolating switch unit | Vacuum Circuit Breaker | isolating switch unit | Vacuum Circuit Breaker | ||
Rated Voltage | kV | 12 | 12 | 24 | 24 |
Arc Quenching | Vacuum | Vacuum | |||
Rated Current | A | 630/1250 | |||
Rated Frequency | Hz | 50/60 | |||
Main Circuit Resistance | μΩ | ≤120 | |||
Power Frequency Withstand Voltage Between Phases, Phase to earth/open contacts | |||||
kV | 28 | 50 | 50 | ||
Lightning Impulse | kV | 60 | 75 | ||
Rated Short-circuit Breaking Current | kA | / | 20/25/31.5 | / | 20/25/31.5 |
Rated Short-circuit Breaking Times | times | / | 30 | / | 30 |
Rated Short-circuit Making Current | kA | / | 50/63 | / | 50/63 |
Rated Short-circuit Making Times | times | / | 5 | / | 5 |
Rated Short-time Withstand Current | kA/4s | / | 20/25 | / | 20/25 |
Rated Peak Withstand Current | kA | / | 50/63 | / | 50/63Out |
Out-of-phase Earth Fault Breaking Current | kA | / | 17.3/21.7 | / | |
Partial Discharge | pC | ≤5 | |||
IP Rating | IP67 | ||||
Mechanical Endurance | times | 10000 | 10000 | 3000 | 3000 |