je.st
news
Tag: voltages
Load Coefficients (Load Varying with Voltages)
2014-06-26 17:04:00| Transmission & Distribution World
It is crucial to comprehend how the electric load reacts to changes in the supply voltage, especially when voltage reduction is now being utilized more often by utilities as means to reduce electric stress and demand response. The Grid Optimization Blog read more
Single Case Contactors cover all global network voltages.
2014-06-02 14:31:02| Industrial Newsroom - All News for Today
With rating of 9–2,700 A, AF Range Contactors feature 4 coils that cover 24 Vac, 20 Vdc to 500 Vac/Vdc. Electronic system rectifies AC or DC control voltage to DC control voltage that is applied on coil; contactor operates safely and is always in optimized condition, making it free of noise. Suited for limited space applications, AF Range contactors are equipped with built-in surge suppression, eliminating need to use external surge-suppression devices. This story is related to the following:Contactors |
Tags: case
single
network
global
Single Supply LDO operates from voltages as low as 1.4 V.
2014-05-30 14:31:06| Industrial Newsroom - All News for Today
Supplied in RoHS-compliant and halogen-free, 10-pin, 3 x 3 mm DFN package, XR71211 provides 1.5 A from voltages as low as 1.4 V and dropout voltage of 250 mV at max junction temperature without requiring external bias voltage or internal charge pump. LDO Regulator, targeted for 1.5 to 1.2 V and 1.8 to 1.5 V conversions, has operating input voltage range of 1.4–2.625 V and provides output voltages down to 0.6 V with accuracy of 0.5% using ceramic capacitors.<br /> This story is related to the following:Controls and ControllersSearch for suppliers of:
DC/DC Converter concurrently covers all railway bus voltages.
2014-05-02 14:31:01| Industrial Newsroom - All News for Today
MGDDI-60 Series has 12–160 V input range and covers all typical battery/bus voltages — 24, 28, 48, 72, 96, 110 V — with same device, which is enabled via switching techniques that also keep efficiency over 90%. With 2 outputs (5, 12, 15, and 24 V) for parallel, serial, or symmetrical operation, converters can cover diverse needs. This 60 W series, which comes in 2 x 3 in. housing and operates from -40 to +100°C, is potted to fit rugged transportation environmental conditions. This story is related to the following:DC To DC Converters
Tags: covers
bus
converter
railway
Calculating Touch Voltages and Electric Shock Risk in Low-Voltage Systems
2014-04-16 18:35:59| Electrical Construction & Maintenance
By Massimo Mitolo, PhD, P.E., Eaton Corp., and Haijun Liu, PhD, P.E., ETAP The analysis of magnitudes and durations of touch voltages in cable installations can provide electrical professionals with a better understanding of the requirements of Art. 250 of the NEC regarding the protection against electric shock. read more
Tags: systems
risk
touch
electric