It can meet the requirements of IEC62271-200, GB3906 and other standards. The mechanical and electrical locking is reliable, realizing the function of "five defenses" and ensuring the safety of users. It can be used in various power plants, substations, industrial and mining enterprises, civil and commercial buildings and other medium voltage power systems.
Structural characteristics of i-AY1-40.5 switch cabinet: armoured removable type.
Switchgear is composed of fixed cabinet body and extractable parts (handcart for short) two parts (see Figure 1 for the outline size and structure of switchgear). Circuit breaker room, bus room, cable room and relay instrument room are all separated by grounded metal partitions to form a fully enclosed armored equipment.
The switchgear cabinet body is made of aluminium-zinc coated sheet and cold-rolled steel sheet. It is processed by NC machine tool and assembled after bending. The assembled switchgear can ensure uniformity in size and high mechanical strength.
The cabinet shell parts are made of aluminium-zinc coated sheet, which not only have beautiful appearance but also have strong corrosion resistance.
| No | Name | unit | parameter | ||
| 1 | Rated current | A | 630、1250、1600、2000、2500 | ||
| 2 | Rated voltage | kV | 40.5 | ||
| 3 | Rated Frequency | Hz | 50 | ||
| 4 | Rated peak tolerable current | kA | 80 | ||
| 5 | Rated switching current (peak value) | ||||
| 6 | Rated short circuit breaking current (RMS) | kA | 31.5 | ||
| 7 | icw | ||||
| 8 | Rated short circuit duration | s | 4 | ||
| 9 | Rated insulation level | Rated impulse withstand voltage (peak value) | Relatively and alternately | kV | 185 |
| Isolation fracture | 215 | ||||
| 1 min power frequency withstand voltage (RMS) | Relatively and alternately | 95 | |||
| Isolation fracture | 110 | ||||
| 10 | Auxiliary Control Loop | Rated voltage | V | DC: 110、220、AC: 110、220 | |
| 1 min power frequency withstand voltage | 2000 | ||||
