 |
1, capacity safety factor
AC voltage regulator is based on the output apparent power (kVA) nominal rated capacity, and under normal circumstances the load is not purely resistive, that is, the power factor COS ¢≠1, the actual output power of the regulator can be kW = Capacity (kVA)×COS¢. Therefore, in the actual selection of power equipment according to the rated power, power factor and load type and other specific conditions to reasonably select power supply, the output power should be left with a reasonable margin, especially when the impact of load selection To be bigger, the specific selection safety factor is shown in the following table
Load Properties Equipment Type Safety Factor Select Regulated Power Supply Capacity
Pure resistive load incandescent lamp, resistance wire, electric furnace and other equipment 1.25~1.5 1.25~1.5 times the total load power
Inductive, capacitive load fluorescent lamps, fans, motors, pumps, air conditioners, computers, refrigerators, etc. 2 ~ 3 ≥ 2~3 times the total load power
For large inductive and capacitive loads (such as motors and computers), the load starting current should be taken into consideration when selecting a type (up to 5 to 8 times the rated current). Therefore, when selecting the regulator capacity, it should be the load power. 2.5 to 3 times.
Such as: three-phase motor 2.2kW 1, 5.5 kW 1, when the regulator is selected, capacity ≥ (2.2kW +5.5 kW) × 2.5 = 19.25 kVA, that is, at least three-phase SJW-20 kVA above the stability of the product Pressure device.
2. Uncompensated power supply output capacity curve
Self-regulating regulator (single-phase 0.5kVA~3kVA, 10k horizontal and below, three-phase 9kVA and below) When the input phase voltage is lower than 198V, the output capacity begins to drop; when the input phase voltage is equal to 160V, it drops to Regulator rated capacity of 50 [%]. Therefore, in the low end of the power supply voltage, special attention should be paid to reducing the use of load derating to avoid overloading the regulator.
The auto-regulator can output both 220V and 110V voltages. However, even when all outputs are from 110V, the load imposed by the regulator must not exceed 50 [%] of the rated capacity, otherwise it is overloaded.
- Stunning crystal surface decorates, add your room with an extra touch of elegance
- Mirror surface stainless steel frame, bringing the fixture with extra shines
- Flush mounted base, keeping the fixture firmly placed
- Easy light ON/OFF/color change with remote control
- Offering 55W soft led light; 3 color lights available
- Perfect for home living rooms, kitchens, dining areas, bedrooms; Also for commercial use in hotels, restaurants, clubs, etc
Decoration Lighting,Bathroom Mirror With Lights Built In,Circle Light Mirror,Makeup Vanity Mirror
JIANGMEN LEDERLIGHT LIGHTING Co.,LTD , https://www.floodlightsled.com