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canada

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  1. H

    HRC fuse adaptors?

    Does anyone know where I can get adaptors to fit HRC fuses into units whose fixing bolts are further apart than needed? I want to stick 125A fuses into a place that up until recently housed TKM 315 fuses. The trouble is that the 315A fuses' fixing holes are 133mm apart but I can't find an...
  2. C

    Computer circuits please help

    Hi I'm new so sorry if in wrong section, I have been asked to wire up a test rig, the customer wants to put power in for a test rig with 40 double sockets to test computers, till systems and kvrs anyone any recommendations on best way of doing it...
  3. G

    Power Factor Correction Capacitors

    Hi, i am looking to correct the p.f. on a number of individual motors. I hope to use a small capacitor bank position locally to each motor. Can anyone recommend a brand/shop where I can get hold of these? Thanks,
  4. A

    Abnormal sound from no load transformer

    Hi All, I face a strange problem in the converter transformers connected to 11 KV sub station. There is abnormal variation in humming sound of the Transformer 11KV/520 V, 2.25 KVA Dd0 feeding to converter/ inverter drive for rolling mill stand motors. Another transformer 11KV/520V, 4.5 KVA...
  5. johnboy6083

    E-stops

    Ive been on 2 different jobs in the last few days that have stand by generators. one genny has to be manually started, and the other has an ATS. There is one E stop inside the building on the main MCC, and multiple e-stops inside the generator container itself. The problem is that the E-stops...
  6. W

    Cable rating/MCB rating

    Morning guys, Preparing to be shot down here, but im a little confused regarding a MCB rating on a piece of machinery at work. Due to ongoing engineering projects that are taking place, i need to move on machine 15 ft or so furhter down the warehouse to free up space for some new ones coming...
  7. S

    Danfoss VLT FC51 Convertor programming

    I'm new here so Hi everyone I have a Danfoss VLT Micro Drive FC51 to use a three phase motor on single phase , I'm not sure about setting it up. Using the Quick Setup I've set the basics 2.2KW, 400V, 50Hz, 5.30A and 1420RPM. Automatic Motor Tuning is set to off there are 4 other settings...
  8. W

    What do I need

    Hi Peeps I am a electrical maintance engineer, I love working on machinery all I have is a c&g 2323 I want to start my own buisness working on the industrial side of things ie fault finding service repair what other qualification will i need been doing this for a number of years. Any info will...
  9. W

    removing & reinstalling tap off box for overhead industrial busbar 400v

    I have to remove a tap off box from a 400v overhead industrial busbar system , just need to know if there is a set procedure for the removal and installation of the tapin box
  10. M

    Siemens S7 PLC SD memory card

    Hi guys, i've been trying to copy the program on an S7 EPROM mmc and backing it up to another, I'm using a siemens field pc to read the program, i can Copy but not paste, I can't find any way to duplicate what's on it, for some reason the plc will not let me communicate through the mpi. Any ideas?
  11. C

    inverter with batteries v generator

    Hi, I run a catering vehicle with a generator but I want tofind out if I can run it off an inverter with batteries but don’t know how manybatteries I would require which would probably be 6 or 12v @280 ah which Iwould need to last for upto nine hours without dropping below the 80% dischargeper...
  12. S

    Handy Electrical Bible

    I always try to plug this ebook as it is a fantastic and handy reference for most involved in industrial electrics. It contains references to: Switching, control, visualization Electronic motor starters and drives Pilot devices Cam switches Contactors and relays Motor-protective...
  13. U

    How To Connect ATS (Automatic Transfer Switch)

    Hi, I need to know How To connect 3 Phase Power supply + automatic transfer switch + Generator please give me a Complete diagram . Thanks In Advance.
  14. W

    Setting timer from star contactor change to delta contactor

    Hello everyone. I would like to know how many second we need to set on timer to change the star contactor to delta contactor. Is it depend on motor rating. let's say i have 10hp motor. so how many second should i set on timer? Thanks
  15. K

    Marina socket size for pleasure craft

    hello, I am looking for information with regards to size of pleasure craft to its power supply. The boat sizes are 13m,16m and 32m I have googled this and have had no luck, Any help with this would be really appreciated.
  16. S

    Mechanical Protection vs RCD Requirements

    Hi, being asked to look at an existing commercial setup where 3 large rooms are rented out to different commercial tenants (picture rooms 1, 2 and 3 adjacent and in order left to right). The point of supply is inside room 1 and is single phase with a main board. Room 1 is occupied by a tenant...
  17. johnboy6083

    lighting design

    hi fellas, ive been trying to learn how to design lighting, as its an area i have almost no knowledge in, other than installing the fittings ect. Im trying to decipher ho to get UF factors, and MF factors, in order to calculate how many fittings are required to illuminate the fictional fire...
  18. M

    convenience store install

    Hello all, Wondering if anyone has any experience of Arneg Panama commercial fridge units? I have been asked to quote for a full new installation in a convenience store and this will include provision for 5 of these units AND (I'm told) the condensing units that come with them. I have surveyed...
  19. S

    Control panel indicators.

    Hi just a quick question here, i have to make a small control panel which will have a N/C contactor which will open by the use of a keyswitch to test the batteries of a charging unit. The consultants have asked for a power on indicator from the two supplies operated by the contactor, which is...
  20. dlt27

    3 phase meter

    The company I work for sent out some guys to connect up some temps through a 3 phase meter. Now the circuit was fed via an existing board with a 63A breaker and the existing board was backed up by a 160 amp mccb.(plus an rcd for the sub-main). The 3 phase meter so I have been told went up in...

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