What are the usege & different between UPS & batteries
with charging system in in Substation?( UPS 120V AC &
battery charger is 120v DC)
Answer Posted / v.venkata ramana
Batteries, are the one of the part of UPS ups are supplies
the continuous power to load. In substation control voltage
24v dc ti supplies the UPS
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is the difference between single core 2 wire and single core 3 wire system? Which application we are using this? and for What purpose we are using this?
what is sevice settings for mccb?How can be it setted?
Why saturation region slowly shifted in the left side?
1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ?
The electromagnetic torque developed is proportional to what in a D.C series motor?
What is EHT tariff or Power factor Tariff ????
What is the unit of charge and current?
what is PID control in VFD drives?
Starting Time of LT & HT Motor
How is the resonant peak, resonant frequency, and bandwidth determined from nichols chart?
hey guys help me out.....what are the industrial uses/functions of nozzles in industries
What are the major reasons for balancing hydro-thermal mix?
What is inrush current?
what is the usage of microcontroller in the panel board?
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<