I am playing around with induction heating at present.
I have a couple of Chinese-built royer oscillator drivers, one good for ~100W and its big brother (~1000W). Both of these will easily heat steel, stainless steel, copper, aluminium, lead, the 1000W driver even comes with a carbon crucible...
Hi,
I am building a new production line for the small electric heating factory that employs me.
This is a multi-station line where the heat pads are moved between stations as they are assembled, by a PLC control system.
The end station is a vacuum press where the heat pads are pressed, load...
I was contemplating the you-beaut software features that are packed into today's PLC hardware, how if one had a mind to in an application with motors, it would presumably be quite feasible to code the thermal overload function if the line current was available as an input.
Feasible, maybe, but...
My employer is a distributor of electrical components (circuit breakers etc), enclosures and switchboards.
We are considering the purchase of a Power Quality Analyser set such as the Fluke 433, Amprobe DM-4 etc, for use in tracking down problems such as nuisance-tripping circuit-breakers and the...
I am a New Zealand engineer employed by a switchboard manufacturer and component supplier.
We have been approached by a customer with a US-based parent company, and they wish to specify US-spec RCDs/GFCIs in an aircraft maintenance installation here.
One issue that is not clear is the...
Hi All,
I am the engineer in charge of quality control at a company which distributes circuit breakers, motor overloads, contactors etc.
We have a need for an AC current source for testing and would like to roll our own if possible.
What I am seeking here are suggestions on a suitable...
Hi All.
My employer is a New Zealand-based distributor of electrical switchboards and accessories. A question arose recently, and I would be interested to see if our normal practice is also normal elsewhere.
We sell lots of switchboards with security locks. Normal practice here is that...
Greetings all,
I am engineer for a distributor of switchboards and components for same. One of my functions is QC.
We have accumulated a pile of RCDs (GFIs if you are American) which have been returned to us as faulty by numerous electricians who have found that they are mostly...
My employer is a distributor of electrical switchboards and switchgear.
A customer recently returned to us a set of some 1/2 dozen small (2.2KW @ 415V) 3-phase contactors with the complaint that they were 'chattering'. We tested and found nothing but a humm that could just be heard over the...
