- Low voltage switch cabinet
- Power distribution cabinet
- Non standard distribution box
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- High voltage switch cabinet
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- High voltage arc suppression cabinet
- Constant pressure water supply equipment
- American box type substation
- European box type substation
- Lighting distribution box
- DC screen
- Integrated distribution box and console
- Product classification：High voltage switch cabinet
- Product specification：
- product price：￥0.00
- Order Hotline：13635605151
Kyn28a-12 (GZS1-12) indoor AC metal armored central switchgear
Describe
Kyn28a-12 (GZS1-12) indoor AC metal armored central switchgear (hereinafter referred to as switchgear) is an advanced medium voltage switchgear developed and provided by Xi'an Senyuan company for technology transfer. It is applicable to three-phase AC power system with rated power of 12kV and rated frequency of 50Hz. It is used to receive and distribute electric energy and control, protect and temporarily test the circuit.
Compliance with standards:
GB3906 3 ~ 35kV AC metal enclosed switchgear
Gb11022 general technical conditions for high voltage switchgear
IEC298 (1990) AC metal enclosed switchgear and control equipment with rated voltage above 1kV and below 50kV
Dl404 technical conditions for ordering indoor AC high voltage switchgear
Product model and meaning
Service environmental conditions
1. Ambient humidity: maximum temperature + 40 ℃, minimum temperature - 10 ℃
2. Ambient humidity: daily average relative humidity ≤ 95%
Monthly average relative humidity ≤ 90%
3. Altitude: below 1000m;
4. Earthquake resistance: the earthquake intensity shall not exceed 8 degrees;
5. The surrounding air does not contain corrosive or combustible gas, water vapor and other obvious pollution;
6. There is no serious pollution and frequent violent vibration, and the severity design meets class I requirements under severe conditions;
7. When it is used under normal environmental conditions beyond those specified in GB3906, it shall be negotiated between the user and the manufacturer.
Note: ① when the relative humidity is greater than 70%, turn on the electric heater.
② Places with an altitude of more than 1000m shall be treated according to JB / z102.
Technical parameter
1. See Table 1 for technical parameters of switchgear
Table1
| Project | Unit | Parameter | |||
| Rated voltage | kV | 3.6 | 7.2 | 12 | |
| Rated frequency | Hz | 50 | |||
| Rated current of circuit breaker | A | 630,1250,1600.2000,2500,3150 | |||
| Rated current of switch cabinet | A | 630,1250,1600,2000,2500,3150 | |||
| Rated thermal stability current (4S) | kA | 16,20,25,31.5,40,50, | |||
| Rated dynamic stability current (peak) | kA | 40,50,63.80,100,125 | |||
| Rated short-circuit breaking current | kA | 16,20,25,31,5,40,50, | |||
| Rated short-circuit making current (peak) | kA | 40,50,63,80,100,125 | |||
| Rated insulation level | 1min power frequency withstand voltage | kV | 24 | 32 | 42 |
| Lightning impulse withstand voltage | kV | 40 | 60 | 75 | |
| Degree of protection | The enclosure is IP4X, the compartment is IP2X when the fixed door of the circuit breaker is opened | ||||
2、Technical parameters of VD4 and VS1-12 vacuum circuit breaker
a、See Table 2 for technical parameters of VD4 and vs1-12j5 vacuum circuit breakers
Table2
| Project | Unit | Parameter | |
| Rated voltage | kV | 12 | |
| Rated frequency | Hz | 50 | |
| Rated current of circuit breaker | A | 630,1250,1600,2000,2500,3150 | |
| Rated thermal stability current (4S) | kA | 16,20,25,31.5,40,50, | |
| Rated dynamic stability current (peak) | kA | 40,50,63,80,100,125 | |
| Rated short-circuit breaking current | kA | 16,20,25,31.5,40,50, | |
| Rated short-circuit making current (peak) | kA | 40,50,63,80,100,125 | |
| Rated insulation level | 1min power frequency withstand voltage | kV | 42 |
| Lightning impulse withstand voltage | kV | 75 | |
| Rated operating sequence | Opening -0.3s-closing and opening-180s-closing and opening | ||
| Rated short-circuit breaking current breaking times | second | 50 | |
| Mechanical life | second | 20000 | |
b、See Table 3 for the mechanical characteristics of VD4 and VS1 vacuum circuit breakers
Table3
| Name | Unit | numerical value | |
| Contact opening distance | mm | 11 ±1 | |
| Overtravel | mm | 4±0.5 | |
| Interphase center distance | mm | 210±0.5,250±0.5,275±0.5 | |
| Closing contact bounce time | ms | ≤2 | |
| Three phase opening asynchrony | ms | ≤2 | |
| The switching time is as follows: | tiptop | ms | ≤50 |
| rated | ms | ≤50 | |
| minimum | ms | ≤60 | |
| Opening time | ms | ≤100 | |
| Average opening speed | m/s | 0.9-1.2 | |
| Average closing speed | m/s | 0.6-0.8 | |
| Conductive circuit resistance of each phase | UQ | ≤40 | |
| Contact pressure | N | 3200±100 | |
When the circuit breaker is used to control 3-10kV motor, if the starting current is less than 600A, metal zinc oxide arrester must be installed. The specific requirements shall be negotiated by the user and the manufacturer: when the circuit breaker is used to disconnect the capacitor bank, the rated current of the capacitor bank shall not be greater than 80% of the rated current of the circuit breaker.
3、See Table 4 for technical parameters of operating mechanism
Table4
| Name | Unit | numerical value | |
| Rated operating voltage | Closing coil | V | DC220,110,AC220,110 |
| Opening coil | V | AC220,110,DC220,110 | |
| Coil power | Closing coil | W | 245 |
| Opening coil | W | 245 | |
| Energy storage motor power | W | 50 | |
| Rated voltage of energy storage motor | V | DC220,110,AC220,110 | |
| Energy storage time | S | ≤10 | |
