Discuss Industrial Floor Sander not getting enough current? in the UK Electrical Forum area at ElectriciansForums.net
Yes it was; The first attempt replaces a 13A faceplate on a confirmed 'ring' in the main hall. They attached a 16A commando socket into the back of the socket to test and the voltage was measured there.Ze and Zs aren't hugely relevant because the integrity of the earthing doesn't make any different to whether the machines work. It's Zp-n that you want to know. A high resistance on the neutral serious enough to stop the machines working would probably cause other effects with lights and appliances interacting and possibly failing, because when one P-N voltage goes down, the others go up. A localised high resistance e.g. bad connection, as opposed to an excessively long thin circuit, would tend to overheat under load.
Could you please explicitly confirm that the 238V mentioned in post #6 is measured L-N on the circuit with the machine operating?
are of this and of the significant sta
The moral of the story - trust your first instincts and ensure the contractor has checked and unblocked his machine!I have an at my local scout group. They have employed a company to sand & varnish their hall floor. the company is using a couple of Lagler Hummel machines 230v 50Hz each requiring a 16A supply. (as a screenshot).
A 16A fused socket has been connected to the hut ring main (by replacing a faceplate) to bypass the need for a 13A plug. This was tried but obviously, the startup current blew the 13A fuse.
With both of the machines, they start but the bag refuses to inflate (only one machine tried at a time). The company suggested this was a supply issue..
A separate 16A socket supply was then configured from the consumer unit, from a different phase, using what would have been the cooker circuit but the issue persisted.
The scout group then borrowed a 5KVA generator and again the problem exists. Post the generator test you would assume that the issue was with the machine.. but there are 2 of them identical.
Anyone any thoughts or seen this behaviour before and can provide any pointers?
The company is adamant is not their machines - they were fine on their last job a couple of days ago!
My god, that is almost identical a story to one I witnessed on Tuesday, this one a concrete planer.I have an at my local scout group. They have employed a company to sand & varnish their hall floor. the company is using a couple of Lagler Hummel machines 230v 50Hz each requiring a 16A supply. (as a screenshot).
A 16A fused socket has been connected to the hut ring main (by replacing a faceplate) to bypass the need for a 13A plug. This was tried but obviously, the startup current blew the 13A fuse.
With both of the machines, they start but the bag refuses to inflate (only one machine tried at a time). The company suggested this was a supply issue..
A separate 16A socket supply was then configured from the consumer unit, from a different phase, using what would have been the cooker circuit but the issue persisted.
The scout group then borrowed a 5KVA generator and again the problem exists. Post the generator test you would assume that the issue was with the machine.. but there are 2 of them identical.
Anyone any thoughts or seen this behaviour before and can provide any pointers?
The company is adamant is not their machines - they were fine on their last job a couple of days ago!
I did wonder if that was the issue here, these appliances are quite aggressive.We had similar problems at work with scarifier.
The OPs were starting it engaging with the floor.
Turns out it needed to be tiped back and upto speed before it was engaged with the floor.
If engeged straight off it would overload and trip breaker it thr DB or tripped the trany
With the concrete scarifier flat on the floor it was to much draw.I did wonder if that was the issue here, these appliances are quite aggressive.
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