Hi, i need help.i have digital temp controller typre sdc21 from yamatake, it controls the temp of fuel system using pid, there is an EV1 , EV2 and EV3 setting,i wonder if this is the alarm setting ? How can i set up the high and low temp alarm, i tried to play these EV but no success. Thanks in...
Hi, i need some advice, we have generator rated 300 kw , 440 v 60 hz, brushless type. when we start eh generator it only gives 50 volts from the main terminal instead of 440 v, avr have changed already, rotating rectifier changed also, all meggered ok. but same result. freq is ok. any other...
hello guys! i need some technical advice about our generators problems. we got 3 gen rated 230 kw each using mechanical governor, brushless self excitation. if 2 gen are in parallel, the sharing of kw not continously stable. sometimes ok then after several mins the diff is too big, say 45 kw. we...
is there any rules regarding the support bracket for the pipes around dry area like engine room ( angle bar ) to be made galvanize??
please need your help guys. I'm trying to check some rules but could not find any. thanks in advance.
Hi guys, Is there any particular items to be inspected for the ship's installation cables, i.e. solas rules or any other class rules. thanks in advance.
Pls any anybody who could give me some causes/reasons of generator losing its excitation. every time we start generator, there is no 440 volts coming in and we need to flush with 12 v battery to attain 440 volts, once the gen is loaded , say 30 kw or more, the gen load starts seesawing while in...
Is anyone can tell & explain to me what is the proper of load test of the generator using water resistance bank. we have 3 gen set, are we going to test individually and take all the parameters ( voltage, current, kw, freq, pf, engine datas such as cooling water temp, exhaust etc) with 25%, 50%...
Hi guys, i need some advise about the proper way of cleaning ac electric motor winding which is contaminated by sea water. Can you guys give me some steps to be followed to restore the stator coil into normal state, why is the sea water is dangerous for the coils compare with the fresh water...
Hi everybody, i need some help. Does anybody knows what is mean by "spillover valve in a hydraulic system, what is the function of this. Is this same with pressure relief valve.
thanks in advance.
Hi guys, need some help. i got generator rated 315 kw, 400 v, 50 hz. is it normal that when the load is on max, the voltage is seesawing from 380-460 volts. I noticed the KW & ampere meter is fluctuating which i think normal, the frq is almost constant. I wonder why the voltage palying too much...
Hi to everyone, i need some technical assistance regrading my project, i have small genset rated 230kw, during operation underload the frequency is hunting.
Can anyone advise me what are the possible causes of this, still the genset is working but the frequncy is not steady.
thanks in advance.
Hi! I need some help about choosing the right space heater to be used inside the forcastle space of the ship. The space heater to be used just to warm up the space when the ship sail in cold place. I preffered electric type. I anyone can give me how to choose the right one like capcity in KW to...
Hi! pls i need some help re AVR of generator. I have 1 unit of gen set rated 140kw, 400volts , 50 hz.I dont know what is the reason why the AVR always damaged. I already changed 2 times but now again damaged, i noticed that the voltage has increased. I adjusted the trimmer to 400 volts during...
Hi to everyone! I need some help. Is anyone csan tell me the real cause of hanging-up the whole fire alarm control panel. When we turn-off the power source , then turn it on again, the system back to normal. During hang-up all keypad & display at halt, no response to any commant and the LCD is...
Hi! is there anybody who can tell me why the pressure trnasmitter connected to our ups 24 vdc showing low insulation alarm in in the UPS panel. ups is supplying 24vdc to signal acquisition unit (plc) if we disconnect all the sensors (pressure trnasmitter- p/I converter) alarm is gone but if we...
how can we produce N (neutral) & PE (potential earth in the three pahse system. I got one panel eqpt needs 3 phase power supply 400 v(l1,L2,L3) and N, PE. these N & PE going to control circuit. Can I use Neutral of main generator set for N, how about PE? The terminal block board has 5 for...
