Overview
KYN28A-12 Series switchgear panel is a MV air-insulated switchgear (AIS) for primary distribution, with vacuum circuit-breaker has been designed for the various operating requirements in public and industrial medium-voltage distribution systems. This panel applies to 3.6~12kV 3 phase AC 50Hz / 60Hz network for receiving and distributing power energy and also for control, monitor and protection. It can be arranged for single bus, single-bus sectionalizing system. It accords to IEC62271-200 <>, IEC694<>, GB3906<<3~35kV AC Metal Enclosed Switchgear>>, DL404<>, DIN.VDE0670<> and so on. It has perfect and reliable prevention function against false-operation.
Operating Conditions
Normal operating conditions, according to the IEC International Standards listed below, for indoor switchgear.
Ambient air temperature
• Less than or equal to 40°C
• Less than or equal to 35°C on average over 24 hours
• Greater than or equal to -5°C (-25°C on request)
Altitude
• Less than or equal to 1000 m;
• Above 1000 m, a derating coefficient is applied (please consult us)
Atmosphere
• No dust, smoke, or corrosive, or inflammable gas and vapor, or salt
• Earthquake intensity: Magnitude 8
Humidity
• Average relative humidity over a 24 hour period ≤ 95%
• Average relative humidity over a 1 month period ≤ 90%
• Average vapor pressure over a 24 hour period ≤ 2.2 kPa
• Average vapor pressure over a 1 month period ≤ 1.8 kPa
Model
Technical Characteristics
| Item | Unit | Data |
|---|---|---|
| Rated voltage | kV | 3.6, 7.2, 12 |
| Rated insulation level | ||
| 1 min. P.F. withstand voltage (phases to ground / gaps) | kV | 42 / 48 |
| Lightning impulse withstand voltage (phases to ground / gaps) | kV | 75 / 85 |
| Rated frequency | Hz | 50 / 60 |
| Rated current | A | 630, 1250, 1600, 2000, 2500, 3150, 4000, 5000 |
| Rated short-time withstand current (4s) | kA | 16, 20, 25, 31.5, 40, 50 |
| Rated peak withstand current※ | kA | 40, 50, 63, 80, 100, 125 |
| Protection class | Enclosure: IP4X, IP2X (VCB Door opened) | |
| Outline dimension (width × depth × height) | mm | 800 (550, 650, 1000) × 1500 (1300, 1670, 2000) × 2200 |
| Weight | kg | 800–1200 |
Construction
