KYN28A-12 (GZS1-12) Model Indoor AC Metal Clad Intermediate Switchgear
Product Description
1. General
1.1 Ratings: system voltage 3.6—12kV, rated current up to 3150A, AC 50/60Hz.
1.2 Application: applicable for power receiving and distribution and for control, protection and
measurement of circuit.
1.3Standards: IEC 62271-200
3.Working Condition
3.1 Ambient air temperature: -15°C~~ 40°C (-25°C~~ 45°C available as customized products)
3.2 Altitude: W4000m
3.3 Relative humidity:
Daily average <95%, daily average water vapor pressure <2.2kPa
Monthly average W90%, monthly average water vapor pressure W1.8kPa
3.4 Earthquake intensity: W magnitude 8
3.5 Applicable in places without corrosive, flammable gas and steam and places no regular severe shock. Note: Customized products available.
4. Feature
3.1 KYN28A-12(Z)(GZS1) and KYN28A-12(Z)(NB) available.
3.2 Reliable “anti-5” mechanical latch, convenient and safe maintenance,
3.3 Both VCB of ZN63n -12 developed by our company and VD4, VB2 AND 3AH manufactured by other companies around the world can be matched with the switchgear.
5. Main Technical Parameter
| Item | Unit | Data |
| Rated voltage | kV | 3.6,72,12 |
| Rated frequency | Hz | 50 |
| Ratedcurrent of circuit braker | A | 630,1250,1600,2000,2500.3150,4000,5000 |
| Ratedcurrent of switchgear | A | 630,1250,1600,20002500,3150,4000,5000 |
| Rated short time withstand current(4s) | kA | 16.20.25,31.5,40,50 |
| Ratedwithstand current (peak) | kA | 40,50,63,80,100,125 |
| Rated short circuitbreaking current | kA | 16.20.25,31.5,40,50 |
| Ratedshortcircuit closing curent(peak) | kA | 40,50,63,80,100,125 |
| 1 min power frequency Between poles,pole to earth | kV | 24,32,42 |
| H3TPn withstand voltage Between open contacts | kV | 24,32,48 |
| nsulation Lightming impul etween poles,pole to earth | kV | 4,060.75 |
| "vel withstamdvoltage(peak)Between open contacts | kV | 4,670.85 |
| Protectionleve | Shell:IP4X IP2Xwhen theCPT and CB doors are open | |
| Note:1.The short circuit capacity of the current transformer should be separately considered. 2.See techmical parameters ofZN63A-12 in relatedcatalogues ofourcompany |
||
6. Structural diagram of switchgear
Product Overview
lt is suitable in a 50Hz 12kV three-phase AC power system, for recieving, distributing, controling, protecting andmonitoring electrical circuit energy.
This product complies with GB3906 "3-35kV AC metal-enclosed switchgear", GB/T11022 "Common technicalreguirements for high-voltage switchgear and control equipment standards", lEC60298"AC metal enclosure switchgearand control equipment with rated voltage above 1kV and 52kV and below", DL/T404"indoor AC high voltage switchgearbooking technical conditions"standard requirements.
Model meaning:
Conditions of use:
Altitude: no more than 1000m;
Ambient temperature: upper limit +40℃, lower limit-15℃(under special process,up to-45 ℃)Relative humidity: daily average <95%,Monthly averages90%;Seismic intensity: Anti-seismic:the seismic intensity does not exceed 8;Environmental conditions: The surrounding air should be free of corrosive or fammable gas.water vapor and other obviousoollution:
No serious pollution and frequent severe vibralion,Slrict design under severe condilions meels Class 1 requiremenls;Jseage under conditions specitied in GB3906 is to be negotiated betwen the user and manufacturer
| Project | Unit | Parameter | |||
| Rated voltage | kV | 3.6、7.2、12 | |||
| Rated frequency | Hz | 50 | |||
| Circuit breaker rated current | A | 630、1250、1600、2000、2500、3150 | |||
| Switch cabinetrated current | A | 630、1250、1600、2000、2500、3150 | |||
| Rated dynamic current(4s) | kA | 16、20、25、31.5、40、50 | |||
| Rated steady curent(peak) | kA | 40、50、63、80、100、125 | |||
| Rated short-circuit breaking current | kA | 16、20、25、31.5、40、50 | |||
| Rated short-circuit closing current(peak) | kA | 40、50、63、80、100、125 | |||
Rated insulation level |
1min Power frequency withstand voltage |
kA | 24 | 32 | 42 |
Light impulse withstand voltage |
kV | 40 | 60 | 75 | |
| Protection level | IP2Xfor enclosureIP4X,isolation compartment,and cirouit breaker compartment door | ||||