Overview
KYN28A-24 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 13.8~24kV 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 <<AC Metal Enclosed Switchgear and Control Equipment above 1kV and below 52kV>>,
IEC694<<Standard Common Clause for HV Switchgear and Control Equipment>>,
GB3906<<3~35kV AC Metal Enclosed Switchgear>>,
DL404<<Order Specification for Indoor AC HV Switchgear>>,
DIN.VDE0670<<AC Switchgear at Rated Voltage over 1kV>> 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
Storage conditions
In order to retain all of the functional unit’s qualities when stored for prolonged periods, we recommend that the equipment is stored in its original packaging, in dry conditions, and sheltered from the sun and rain at a temperature ranging from -25°C up to +55°C.
Model
Technical Characteristics
| Item | Unit | Data |
|---|---|---|
| Rated voltage | kV | 13.8, 15, 17.5, 20, 22, 24 |
| Rated insulation level | ||
| 1 min. P.F. withstand voltage (phases to ground / gaps) | kV | 50 / 60 |
| Lightning impulse withstand voltage (phases to ground / gaps) | kV | 125 / 145 |
| Rated frequency | Hz | 50 / 60 |
| Rated current | A | 630, 1250, 1600, 2000, 2500, 3150 |
| 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 | 1000(800) × 1800 × 2400 |
| Weight | kg | 840–1500 |
Construction
