Take a visit to http://www.microhydropower.net
and http://www.energy-alliance.spb.ru/ - English version.
This Russian company offers also submerged type.
B.r.
Fenec, to minimize cost you can :
1. Use aluminium busduct instead of copper
2. Try to aviod elbow element as well as any flexible or any non-straight.
3. Chesk the number of conductors whether is it possible to use 3 conductor instead of 4.
The manufacturers have two main technologies - sealed...
Hi,Kagiso
Normally we use extensible RMU in two cases :
1. The future network structure is unknown and the client
expects that in will be 1-3 additional feedes in RMU but
the client doesn't know how many.
2. Since each manufacturer of RMU has limited line of non-extensible RMU and the...
Iknow SE manual http://www.cn.co.kr/cnuser/power/power/pdf/ect158.pdf
with an example of fault level calculation at the end of it.
It is "Cahier technique # 158. Calculation of short-circuit currents" (English)
Best regards
Hi spars22222,
You can find some simple and cheap ways on site http://www.epanorama.net/links/motorcontrol.html
look at section "Using three phase motor on single phase supply.
B.r.
cfordyce,as you posted the grill has 133A 220V,it means
that current in the primary winding 600 V 1 phase will be
not less than 50 A , even if you don't consider inrush current, 30A CB is not suitable.
If you havn't the secondary winding protection of your
installation and the grill if dead...
It's possible to use LC1-F500 by Telemecanique designed
for switching capacitor banks.It has 400-440V, 50/60Hz,
300 kVAr rating. You may find it in Schneider or in Scuare D
catalogues,or site http://www.schneider-electric.com
B.r.
France Transfo states,that connection in parallel is permissible if :
1. The power output of the largest Tfo should not be more than twice that of the smallest unit.
2. Transformers must be supplied by the same network.
3. Connections must be the same length and have similar characteristics...
Merlin-Gerin has RMU named RM6 DIDI 12kV .It means 2 CBs
for Tfo protection ( function D -disjoncteur I - interrupteur) and 2 switches. You can find it on site
Schneider Electric.
Regards
STR 23SE trip unit has two settings in overload protection:
-coarse setting Io between 0.5 and 1
-fine adjustment between 0.8 and 1
You can choose Io = 0.8, Ir= 1 and obtain the same setting 630 x 0.8 x 1 = 504 A as you had in old TM trip unit.
There is one...
Non-linear magnetazing impedances of transformers,reactors,
fluorescent lamp balasts cause harmonics.The harmonic-generating devices are also static convertors,inverters,
speed controllers etc.
qawsed,I know a little about this point. I refer to Schneider products,because I know them, but I am sure that the others have their's own decision.
If you take the ÌASTERPACT or COMPACT catalogues,you will find that they comply with the marine specifications ( Veritas,Lloyd's Register of...
don01,you are right I work for Schneider in Russia
cctdiag,I can propose www.squared.com/us/products/ or
www.schneider-electric.com for more information about
Compact NS
Best regards
cctdiag, Io designates coarse adjusment ( function of In),Ir - fine adjustment - both for long time protection against overloads for electronic trip unit STR 22SE,22GE,
23SE,43 ME,53UE.The adjusment is defined as multiplication Io x Ir.
But if you have NS with termal magnetic trip unit TM-D or...
dydt,MGE advises to follow the sequence of turn on the CBs ( I refer to user manual GALAXY PW E-51028230XT/DC,article
" system start up") :
close Mains 1 input switch Q1,the system powers up
the rectifier/charger automatically starts,then close:
1/ QF1- battery is on
2/ Q5N - load is...
prc, I try to clarify.The manufacturer of single core cable
insists on using non-magnetic clamps and bolts for fixing
the single core cable to the steel enclosure of 10 kV RMU whereas the manufacturer of RMU ( ring main unit)uses steel for these details. My question is :do any documents...
Hi bahram, you can find this information in Telemecanique catalogue Contactors ( for example July 98) page1/30. The rated current depends on categories of utilization - DC1 to DC 5 . For the DC-2 to DC-5 you have
12 A for 24 V DC - I mean the contactor LC-1,LP-1 - D09.
If you connect 3 poles...
bab1, as addition to the other mails,I know that each manu
facturer has it's own calculation for the diferent types of
swithdoad,presented in the table form for convenience.
For example, Schneider Electric in it's catalog for PRISMA P swchb proposes for 1000 A 1 bar/per phase with cross-section...
