The KYN61-40.5(Z) Armored Removable AC Metal-Enclosed Switchgear is a high-performance indoor power distribution unit designed for three-phase AC 50Hz systems with a rated voltage of up to 40.5kV. It is widely used in power plants, transformer substations, industrial and mining enterprises for receiving and distributing electrical energy, as well as for control, protection, and monitoring of power circuits. The switchgear is suitable for frequent operation locations and ensures reliable and safe power management in demanding environments.
This product is fully compliant with international and national standards, including GB/T11022-2020, GB3906-2020, DL404-2020, and IEC 62271-202: High-voltage switchgear and control equipment – Part 202: HV/LV prefabricated substations, ensuring outstanding performance, safety, and reliability.
Main Features
The KYN61-40.5(Z) switchgear adopts a modular, assembled cabinet structure. Its circuit breaker uses a floor-mounted handcart design, offering excellent flexibility and operational convenience. The system integrates advanced mechanical and electrical safety interlocks to guarantee secure operation under all conditions.
Key Advantages:
+ Assembled cabinet structure with removable handcart design for flexible installation and maintenance.
+ Equipped with a new composite insulated vacuum circuit breaker that provides superior reliability and easy replacement.
+ Built-in lead screw nut propelling mechanism ensures smooth movement of the handcart and prevents damage due to misoperation.
+ All switching operations can be safely performed with the cabinet door closed.
+ Interlocking among the main switch, handcart, and cabinet adopts a compulsory mechanical locking system to achieve the “five-prevention” function (preventing misoperation, grounding errors, and access to live parts).
+ The spacious cable chamber allows multiple cable connections, enhancing installation convenience and reliability.
Applications
The KYN61-40.5(Z) armored removable AC switchgear is ideal for medium and high voltage power distribution systems in industrial plants, substations, commercial facilities, and mining operations. It provides stable, safe, and intelligent power control for both new and upgraded power networks.
Technical Standards
Compliant with GB/T11022-2020, GB3906-2020, DL404-2020, and IEC 62271-202 for high-voltage switchgear assemblies.
Type description
Performance parameters
| Name | Unit | Value |
| Rated voltage | kV | 40.5 |
| Rated current | A | 1250/1600/2000 |
| Rated frequency | Hz | 50 |
| Rated short-time withstand current | kA | 20/25/31.5 |
| Rated peak withstand current | kA | 50/63/80 |
| Rated power frequency withstand voltage | kV | 95/1min |
| Rated lighting impulse withstand voltage | kV | 185 |
| Rated short-circuit duration | S | 4 |
| Degreeofprotection | P3X |
| Name | Unit | Value |
| Bated yoltage | kV | 40.5 |
| Bated frequency | Hz | 50 |
| Rated power frequency withstand voltage | kV | 95/1min |
| Rated lightning impulse withstand voltage | kV | 185 |
| Rated current | A | 1250/1600/2000 |
| Rated short-time withstand current | kA | 20/25/31.5 |
| Rated short-time breakingcurrent | kA | 20/25/31.5 |
| Rated peak withstand current | kV | 50/63/80 |
| Rated short-circuit duration | ms | 4 |
| Openingtime | Ms | 30≤t≤60 |
| Closingtime | S | 50≤t≤100 |
| Rated short-circuit breaking current times | times | 20 |
| Mechanicallife | times | 10000 |
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