I have found one reference in our codebook. CEC
Quote:
"26-220 Transformers supplying capacitors
The volt-ampere rating of a transformer supplying a capacitor shall not be less than 135% of the capacitor voltampere rating."
I don't know why this rule was written. Maybe someone has a technical...
I have been told by one supplier of power factor correcting capacitors that you can not put more than 20% of the transformers kva size. (Plant voltage is 3ph 600 volts)
Assume that we are talking about fixed capacitor banks not an automatic system.
What is the maximum kvar in relationship to the...
We have a table saw with a HSD P260 I/O controller and a HSD RTU500. The machine manufacturer has not supplied any information.
Does anyone have information about these units. Wiring instructions, programming or service manuals.
I have searched the internet without any luck.
Any information...
We have been asked to build a machine that will be exported to India. Can someone supply information or a reference to the codes or regulations for India.
We are also looking for information such as colour codes for control panel wiring. Types of fuses that are common in India.
In the end, we...
Modula2: Your reference to rogowski coils forced me to do my homework. Turns out that the the probes I have(Ampflex) are based on the rogowski coils.
The PA-9 analyzer can measure up to the 63rd harmonic, so higher frequencies are not a concern.
A new question has just entered my mind...
I would like to purchase some new current transformers for a metrosonics(Avo/Megger) PA-9 power analyzer. Problem is that this analyzer like most others have manufacturer specific plugs on them, and their pricing seems very high. Is there an adapter that will enable me to use another suppliers...
I would like to thank everyone for their input to my problem. In summary, the most practical solution would be to purchase a design D motor.
I will look into Vector Variable Frequency Drivers.
Reading the manual on correctly programming a vector Frequency drive for this application will be a...
We have a number of chip spinners that use a Design D motor due to the initial high torque required to start.
An outside contractor was asked to refurbish one of these spinners and returned the spinner with a Design B motor that utilized a soft start. When we tried the unit, it failed to start...
You have not specified the motor nameplate frequency?
If it is 380 volts 50Hz then that would be equivalent to a 456 volt 60Hz. So a 440 or 460 volt transformer would do the job. One problem that should be investigated on the machine is the control transformer. Check that the output voltage of...
By code in Canada, control transformers must have there secondary side grounded. I have come across a number of installations in the food industry where the secondary side of the control transformer is not grounded. This is only on machinery that has large amount of water used in the process...
