Product type and meaning
Use
1.KYN-10 indoor AC metal-clad transfer switchgear (hereinafter referred to as trolley cabinets) trolley cabinets are suitable for AC 50Hz rated voltage of 3-10KV center ungrounded single busbar and single busbar sectionalized system of the indoor sets of power distribution equipment for all types of power plants, substations and industrial and mining enterprises as the acceptance and distribution of network power to control, protect and monitor the circuit. Power plants, substations and industrial and mining enterprises as the acceptance and distribution of network power on the circuit control and protection monitoring.
2.KYN-(F-C)-type indoor armored double-layer mobile open AC metal-enclosed switchgear is a 3.6~12kV three-phase AC 50Hz, single-bus and single-bus sectionalized system of the indoor switchgear, mainly used as a high-voltage power distribution equipment for power plants, substations, metallurgy, paper, petrochemicals, textiles, and industrial and mining enterprises, and is used for control and protection of electric motors, transformers and capacitors. It can be used for the control and protection of motor, transformer and capacitor.
3.KYN-12/1250-31.5 indoor armored open-type AC metal-enclosed switchgear called switch, is a 3.6-12KV, three-phase AC 50Hz single busbar and single busbar sectionalized system of the complete set of power distribution equipment. Mainly used in power plants, small and medium-sized generators to send power, industrial and mining enterprises and utilities power distribution and electrical system of the secondary substation power receiving, sending power and large high-voltage motor starting, etc., the implementation of control and protection, monitoring purposes. The switchgear meets the requirements of IEC298, GB3906 and other standards.
Structural features
1.KYN indoor AC metal-clad transfer switchgear (hereinafter referred to as the trolley cabinet) is based on the "3-35KV AC metal-enclosed switchgear," according to the IEC298 "AC metal-enclosed switchgear and control equipment" standard design and manufacture, but also to meet the Ministry of Water and Electricity, the Ministry of high-voltage switchgear should be with the five anti-functional requirements.
2.KYN-(F-C) type indoor armored double layer moving open type AC metal-enclosed switchgear is a part of KYN-(F-C) indoor armored double layer moving open type AC metal-enclosed switchgear, which can be used in conjunction with KYN-(F-C) indoor armored double layer moving open type AC metal-enclosed switchgear to form a combined power distribution unit. The switchgear cabinet is a double armored F-C cabinet, one side of the switchgear cabinet can accommodate two F-C trolleys, equivalent to the function of two single-decked cabinets, and covers an area of about the same as a single-decked cabinet. For the user to save a lot of floor space and equipment investment. The vacuum contactor used in this product is specially designed for the double-deck cabinet structure, with simple structure, small size, beautiful shape, high insulation level, long life and other advantages, there are two kinds of structure of electric keep and mechanical locking.
3.KYN-12/1250-31.5 indoor armored open type a.c. metal-enclosed switchgear, the cabinet is armored structure, adopts the middle arrangement, divided into disconnecting room, main bus room, cable room and relay instrumentation room, in order to make the cabinet has the ability to withstand the internal fault arc, in addition to the relay room, the function of compartments are equipped with exhaust channel and sink pressure window, the primary contact is a bundled round contact. The primary contacts are bundled round contacts.
The switchgear can be installed against the wall or back-to-back by adopting the front-maintenance type structure according to the user's requirements. The switchgear is equipped with safe and reliable interlocking devices, fully meeting the requirements of the five-proof interlocking.
a, the circuit breaker trolley can not be closed in the process of pushing or pulling out;
b, the circuit breaker trolley can only be operated in the test position or in the working position for closing and breaking operations and the trolley can not be pulled out from the working position when the circuit breaker is closed;
c, the circuit breaker trolley can be moved from the test position to the working position only when the earthing switch is in the opening position; the trolley can be moved from the test position to the working position only when the earth switch is in the opening position. The earth switch can be operated only when the trolley is in the test position or outside the cabinet;
d,The rear door cannot be opened when the earth switch is in the tripping position;
e,When the trolley is in the working position, the secondary plug is locked and cannot be removed.
Besides the chassis frame of the breaker room, there are fixed guide rails for the movement of the trolley, in order to facilitate the observation and inspection of the circuit breaker, there are special extension rails which can be withdrawn from both sides of the fixed guide rails, when the circuit breaker is opened, the two extension rails can be pulled out to the outside of the cabinet, so that the trolley can be moved from the cabinet directly to the outside of the cabinet on the extension rails.
Attached to some of the market existence of high-voltage cabinets:
①GR series:
Purpose
GRC1-type high-voltage power distribution cabinets for 3 ~ 10kV substation as a way to improve the power factor of the power grid. This series of cabinets for high-voltage electrostatic capacitor cabinets, by the capacitor cabinets, transformer cabinets, measurement and discharge cabinets.
Program classification
1.GRC1 type for the general type, by the capacitor cabinet and transformer cabinet. The capacitor bank is divided into four programs, and the transformer bank is divided into three programs.
2. GRC1C type for the cross-differential protection type, that is, when the cabinet of a capacitor trip, relying on the current transformer connected to the cross-differential line to drive the main circuit switch trip. This type also has four programs.
3. GRC1Y type for the inhibition of high harmonics, reactor type, that is, with series reactor capacitor bank.
Structure
The cabinet is made of angle steel and thin steel plate bent and welded together, and is laid out in three layers, with the oil tank board installed on the bottom layer, measurement and discharge cabinets, voltage transformers in the middle layer, and reactor installed on the bottom layer, and a steel plate door on the front side, on which can be installed instrumentation, switches, and signal lamps.
②GGX2 series:
Purpose
GGX2C10 high-voltage vacuum switchgear is suitable for rated voltage 3 ~ 10kV, frequency 50Hz three-phase alternating current grid, as the acceptance and distribution of power, and the circuit control, monitoring and protection of the complete set of power distribution equipment.
Structural features
The power distribution cabinet is a metal enclosed box shell, all the charged bodies are enclosed in the cabinet, and according to the function is divided into the bus room, circuit breaker room, cable room, instrumentation box is a separate structure, installed in the cabinet; vacuum circuit breaker and electromagnetic operating mechanism or spring operating mechanism is a whole car structure, pushed into the cabinet after the bolts are fixed. Main wiring program 24 kinds.
Main technical data (see table)
Parameter name
Unit
Value
Rated voltage
kV 3 6 10
Maximum voltage
kV 3.5 6.9 11.5
Rated frequency
Hz 50
Rated insulation level
Rated frequency
Hz 50
One-Minute Frequency Withstand Voltage
Relative to Ground, Phase-to-Phase
kV 24 32 42
Inter-break
kV 26 36 48
Full Wave Frequency Withstand Voltage
Relative to Ground, Phase-to-Phase
kV 40 60 75
Inter-break
Rated Frequency
Hz 50
Rated Frequency
Hz 50
Hz 50
Hz 50
Hz 50
kV 43 66 85
Rated current
A
6301000
Rated breaking current
kA 2031.5
Rated operating cycle
Minute -- 0.3s --Combine Minute -- 180s --Combine Minute
Rated Dynamic Stabilizing Current (Peak)
kA 5080
Rated Thermal Stabilizing Current
kA 2031.5
Rated thermal stabilization time
s
4
③GGX2 series:
Use
GSGC1A double busbar high-voltage switchgear is suitable for regional substations, large industrial and mining enterprises substations and electrical equipment test stations with voltage of 3,6, 10kV, AC 50kV. 10kV, AC 50Hz double busbar system, can also be used in single busbar with bypass busbar power supply system, as the acceptance and distribution of power.
Structure
The cabinet system is welded by thin steel plate and angle steel, the base is welded by channel steel, there is a single protective mesh door in front of the cabinet, and a double protective mesh door in the back, and the top busbar is exposed.
The cabinet is divided into two rooms, the front room is equipped with standby (starting) bus isolation switch, line isolation switch and cable head, etc., the top of the front room is equipped with standby (starting) bus. The rear compartment is equipped with main (working) busbar disconnecting switch, oil circuit breaker, main (working) busbar disconnecting switch on the top, and current transformer can be installed in the lower part between the front and rear compartments. The oil circuit breaker and disconnecting switch operating mechanism are mounted on the front of the cabinet. At the back of the cabinet, there is a single steel door on the left side, inside which is the relay room. Between the rooms, between the primary and secondary electrical equipment are separated by a thin steel plate. It is possible to repair the secondary electrical equipment without stopping the power supply of the primary electrical equipment.
The cabinet is equipped with programmed electrical interlocking devices to prevent misuse by staff.