KYN61-40.5 Armoured removable AC metal enclosed switchgear

KYN61-40.5(Z) type armored removable AC metal-enclosed switchgear (hereinafter referred to as switchgear) is a three-phase AC capacity of 50Hz and rated voltage of 40.5kV

Complete set of indoor power distribution units. As a power plant, substation and industrial and mining enterprises to receive and distribute electric energy, the circuit control, protection and monitoring functions,

It can also be used in places with frequent operations. This switchgear complies with GB/T11022-1999, GB9306-2006 and DL/T 04-2007 and other standards.

Key features

The switchgear structure adopts the assembly type, and the circuit breaker adopts the handcart floor structure;

Equipped with a new type of composite insulation vacuum circuit breaker, and has the characteristics of good interchangeability;

The handcart frame is equipped with a lead screw nut propulsion mechanism, which can easily move the handcart and prevent damage to the propulsion structure due to misoperation;

All operations can be carried out with the switchgear door closed;

The interlock between the main switch, the hand car, and the switch switchgear door adopts the mandatory mechanical locking method to meet the "five prevention" function;

Ample space in the cable room, which can connect multiple cables;

Fast grounding switch for grounding and closing short circuit;

Enclosure protection level IP3X, hand car room door open, protection level IP2X;

The products comply with GB 9306-2006, DL/T 04-2007 and refer to the international IEC 928 standard.

Environmental conditions of use

Ambient temperature: upper limit +40°C, and the average value measured within 24h does not exceed 35°C, lower limit 10°C

Altitude: altitude does not exceed 1000m;

Relative humidity: daily average does not exceed 95%, monthly average does not exceed 90%;

Earthquake intensity: not more than 8 degrees;

Water vapor pressure: daily average does not exceed 2.2kPa, monthly average does not exceed 1.8kPa;

Surrounding environment: no fire, explosion hazard, serious pollution, chemical corrosion and severe vibration of the place.

Structural characteristics of switchgear

The switchgear is designed according to the armored metal-enclosed switchgear standards in GB3906-2006 and IEC298. The whole is composed of two parts: the switchgear body and the withdrawable part (handcart).

The switchgear structure is assembled, bolted and formed, and the switchgear is divided into circuit breaker room, main busbar room, cable room and relay instrument room with metal partition.

The enclosure protection level reaches IP3X, the protection level between each compartment is IP2X, and all metal structural parts are reliably grounded, and each compartment of the main circuit system has an independent exhaust pressure release channel.

Shell and partition Close The shell and partition of the switchgear are bolted by cold-rolled steel plate after processing and bending by CNC machine tools. Therefore, the assembled switchgear can ensure the structure

Uniformity of dimensions. The switchgear is divided into a circuit breaker room, a main busbar room, a cable room and a relay instrument room, and the parts are separated by grounded metal partitions.

Handcart

Handcarts can be divided into circuit breaker handcarts, voltage transformer handcarts, metering handcarts, isolation handcarts, etc. according to their use, and the external dimensions of all types of handcarts are the same.

Handcarts for the same purpose are interchangeable. The handcart has a test/isolation position and a working position in the switchgear, and each position is equipped with an interlock device to ensure that the handcart cannot be moved casually when it is in the above two positions.

Circuit breaker compartment Circuit breaker compartment A specific track is installed inside the circuit breaker compartment for the handcart to move. When the circuit breaker moves between the test position and the working position,

The isolation flap opens or closes automatically, ensuring that the staff does not touch the live body. The handcart can be operated with the switchgear door closed, through the viewing window

You can see where the handcart is located in the switchgear, as well as any functional signs on the handcart.

Busbar chamber

The main busbar leads from one switch switchgear to another by means of branch busbars and static contact box transformer, fixed with busbar sleeves when crossing adjacent switchgear side panels.

All busbars are insulated by composite.

Cable compartment

PT, grounding switch, lightning arrester and multiple cables can be installed in the cable room.

Relay room

Relay indoor panels and panels can be installed with control, protection components, metering, display instruments, live monitoring indicators and other secondary components.

Interlocking device

The switchgear has a reliable interlocking device to effectively protect the safety of operators and equipment;

When the grounding switch is in the open position, the handcart can be moved from the test/isolation position to the working position and the rear door cannot be opened, preventing the accidental entry of the live interval.

When the handcart is completely pulled out of the switchgear or the handcart is in the test/isolation position in the switchgear and the grounding opening association lock is locked, the grounding switch closing operation can be carried out; When the handcart is in the working position, no

The grounding switch can be closed, which prevents the live misclosing of the grounding switch and prevents the handcart from moving to the working position when the grounding switch is in the closed position.

The circuit breaker handcart can only operate the circuit breaker when it is in the test/isolation position or working position; And after the circuit breaker is closed, the handcart cannot move, which prevents the push and pull of the circuit breaker when the load is live.

Electrical interlocks can be installed between each switchgear.

Grounding device

In the cable room, there is a separate Φ6×50mm2 grounding busbar, which can run through the adjacent switchgears and make good contact with the switchgear.

Switch switchgear installation

Height of electrical room: ≥4500mm;

Distance from the wall behind the switchgear: ≥1500mm;

Flatness of the basic structure: ≤1mm/m2;

The embedded channel steel of the foundation is not more than 3mm above the ground;

Can be fixed on the foundation by bolt or welding;

The weight of the switchgear is about 1800kg;

Switchgear operation corridor width (single row): ≥ 3000mm, double row (face-to-face) ≥ 4000mm.