dear all,
I am reading BP sphoto voltaic specification BP380 and found at note 1 about STC (standard Tes condition). it is said that STC is conducted in 1000 W/m2 and cell temp 25 dec C to get warranty output 75 W. Efficiency is 0.12.
If in area, the insolation is 4.5 kW/m2/day and daylight...
all,
I am in the middle of a project which involving fuel gas heater selection. The specification said that it should be controlled by thyristor either zero crossover or phase vector control in all range. Anyone can help me detail explanation (advantage or disadvantage)?
I also understand that...
all,
I am working on safety audit on our shiping contractor. I didn't find any ELCB/RCD to protect their seaman. They use 3 phase generator with 3 cables only to the main busbar.Is it possible to install ELCB/RCD for 1 phase outlet/receptacle (hand tools purposed)on this installation? All ELCB...
I appreciate for your help for the following:
We are planning to modification of 11 kV distribution network. This network has 2 branches, to production area (2.5 MVA) and non-produstion area (1.8MVA). We have two option
opt 1. Insert LBS(Load breaker switch) to non-production branch, the...
dear all,
This month, we have expanded our power system with additional 5 x 1.2 MW Genset at MINING area. The first power plant is at PORT area, 15 km far from the location with 19 MW installed capacity. We use 11/70 kV transformer for tranmission line. Before gensets are installed the flow of...
dear all,
Our power station want to decrease the cost of oil waste handling. They are intender to change the waste lubricating oil as boiler fuel. Is it possible? The boiler is designed as fired coal.
I am electrical engineer, and I am not familiar with fuel-mechanincal-environmetn issue. I...
all,
I am looking for information related using CT 1000V rating in 3300V rating. I plan to use RING type of CT to cable with heatshrink insulation. This CT will be input for transformer protection unit and display unit. This choices should be taken since the electric panel doesn't have space...
all,
We have a conveyor which need to be changed its drive. From DOL starting 3.3 kV motor into VSD. This modification require additonal transformer 3.3/0.6 kV. The old motor is protected with MCHN02 motor relay protection. I want to ask for your help:
1. Anyone know where I can find the manual...
I read an handbook about squirrel cage motor class. I am confusing with the explanation about class A, B,C and D induction motor. Could anybody explain to me the difference between them. Suppose I design a system with motor drived by VSD, should I consider this class?
Thanks you.
rgds,
pamungkas
dear all,
I am investigating of a leakage condenser which use sea water as cooling water. I plan to measure the sacrificial anode (Zn) protecting the tubes (Al Brass) using Ag/AgCl. I know the correct value Cast Iron protected by Al against Ag/AgCl is about -0.85 V. Could any one tell me the...
hi all,
The condensers of our 5 MW steam turbine has problem decreasing in thickness/leakage. We use sea water as cooling water. The condenser have 2 inlet of cooling water, NORTH and SOUTH. The NORTH side is higher in pressure rahter than the SOUTH. Eddy Current Test showed that the SOUTH side...
