 | *****Never edit in here...the xls sheet is the origin******** |
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| Fake devices and its risks. |
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| Earthleakage:- This button – what does it do? |
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| And we thought resetting a CB is easy? |
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| Watch out, for this thing might just explode one day. |
| Does circuit breaker kA realy imply the product can can handle thousands of amps? |
| My compressor circuit breaker is tripping… |
| You did know CB trip point changes according to temperature right! |
| You did know CB have different kA ratings for different standards , right? |
| You did know circuit breakers have different kA ratings at different voltages right? |
| What is a current limiting circuit breaker? |
| Selecting the correct circuitbreaker… |
| What is circuit breaker cascading/coordinating… |
| Selecting a circuit breaker for motor starting? |
| So you want to use the moulded case circuit breaker (mccb) to protect the motor? |
| Don’t know about yours, but this is how my earthleakage behaves… |
| An earthleakage without a neutral …what’s up with that? |
| Over sensitive earthleakages? |
| Fuses in 3-phase circuits…Why? |
| Now this is something I never considered – Using fuses in parallel. |
| Surge arrestors – Should they also have protection fuses/circuit breakers |
| Motor starting with a generator(limited supply) |
| Star delta starter – It saves money/energy in many ways.(A) |
| Star-Delta saving more money… |
| A star delta starter will not work here, really? |
| I called everyone, noone knows…What class are these overloads? |
| How can I know a soft starter will prevent pulling the generator down? |
| Are all softstarters equal breeds… |
| Softstarter protection and warranty conditions? |
| Soft starter forward / reverse control. |
| Softstarters and power factor correction systems… |
| Softstarter -Why did the starting time stay the same irrespective of the adjustment? |
| Can anyone tell me if there is an instance where a softstarter (for motor)can control current from zero and ramp up to full speed? |
| Thermal overload in a soft starter…calculated! |
| A neat trick to check if generator can take the starting current of motor. |
| Motor starting graphs…it will help with confirming if the softstarter will do the trick! |
| Lovato ADX sosftstarter panel selection considerations. |
| A caution Lovato provided for their soft-starters – Parallel connected Softstarter . |
| Softstarter for multiple motors…thats cool. |
| This current monitor will not work with a star delta starter… |
| Relay docs…is this unfair or what? |
| The REAL difference between a relay and a contactor? |
| Are all relays equal? |
| What temperature does energised relays operate at then? |
| I knew Finder 40 series relay could carry 10A and I can switch max 250Vac. Uhhh…wroong! |
| So the relay is marked 85DegC, dont take for granted the cheap base will last. |
| Relays: I hope you remember this because I always forget… |
| How to select the correct relay? |
| Can Lovato contactors be used in DC load applications? |
| Why does this AC solid state relay(SSR) not work? |
| Do not make this mistake with a 3 phase SRR! |
| Save some money because of higher voltages. |
| What are these signs I found in Hager catalog 2015 |
| This is when a DIRECT current sensing device(relay) will pop on connection… |
| And here I thought it is simple…current monitoring. |
| Conveyor belt tracking/monitoring – timers. |
| Simplicity in conveyor management control. |
| Operating a pump 200mtrs away? |
| Selecting a replacement encoder? |
| Temperature probes…deciphering who is who. |
| How to confirm what temperature sensor this is? |
| This useless proximity sensor does not want to work… |
| I bought this sensor – it says Namur – and it does not work? |
| This 63Amp isolator is obliterated…can’t be! |
| What is the difference between a loadbreak switch, an isolator and a switch. |
| Changeover switches – what is the story with late break contacts? |
| Changeover switches – Whats up with the auxiliaries having to be late break? |
| Electrician – Is there a different definition for every country? |
| When are we going to have one standard…marking and termination. |
| I vote this to be the most confuxing IEC standard…IEC 60664 Pollution degree? |
| Different electrical test standards in this day and age, WHY? |
| Schneiders “Electrical Installation Guide 2015” and how it relates to SANS (South Africa) |
| Heating and the selection of the type of enclosure? |
| Electrical panels, Condensation and electronic equipment. |
| Electrical panel air intake/outlet positions? |
| Air ventilation for heatsinks…since when? |
| I bet there is no better way to explain power factor. |
| Earthing introduction… |
| Supply earthing systems… |
| So what is the difference between grounding, bonding and earthing? |
| What to do when I don’t trust electrical utilities /the grid supply? |
| Manufacturer- Should we not have any say in product migration? |
| Is Fuji committed or what? |
| Why these manufacturers? |
| I send an email for technical info to a multinational mnf, guess what the response was? |
| Thermal overload phase failure trip features – when will it trip/ |
| Selecting the correct PLC? |
| Transformer VA- what exactly is that? |
| A quick kWh meter reading confirmation check…on the spot! |
| Why is this maximum demand meter no working? |
| Sharing CT outputs between equipment…why not? |
| The challenges of markets with limited stock content… |
| Beautiful products |
| Design and select components:- Sparky, lets not reinvent the wheel…it is already done for you…remember! |
| Panel assembly considerations -We normally get too busy with the job and forget the simple things |
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NEW blog topics:
| Socomec changeovers: Can use it on PV- automatic ones, manual ones, motorised ones. |
| add to the transormer protection the DF charts |