16 Years Factory Miniature circuit breaker-FTG11 for The Swiss Factory
Exterior and dimensions
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|Rated current (A):||32,63,100|
|Rated operational voltage||400|
|Rated insulation voltage:||690|
|Rated short-time connecting capacity||conduction time:0.1s||30Ie|
|Rated short-time withstand current||conduction time:1s||20Ie|
|Rated connecting and breaking capacity||3Ie|
|Rated impulse withstand voltage Uimp(KV):||4|
o The ELB(Earth Leakage Breaker) is also called as RCD(Residual Current Device) and GFCI(Ground Fault Circuit Interrupter).
The inverters, which are widely used in washers, air conditioners, elevators etc due to their energy efficiency and detail control function, cause a lot of harmonics leakage current. This leakage current may flow through the wires of the building and thus cause malfunction to the connected appliances.
In the control rooms of factories, substations, IDC center powered from UPS, a large amount of leakage current is released and most of the time, the conventional leakage breaker(Io ELB) cannot handle the leakage and thus malfunction. Therefore, in most control rooms the leakage breaker(Io ELB) is either taken away or even never installed from the beginning, thus install MCCB instead of ELB. This is a very dangerous situation as resistive leakage current can lead to fire in these facilities.
The earth leakage breakers(ELB) operates based on Io(I zero), and therefore in the digital world of today, the breakers does not function properly in world-wide.
Therefore, our company has developed an IGR leakage breaker which can operate at the amount of resistive leakage current properly, but will not operate at capacitive leakage current properly. The innovative IGR breaker will operate more sensitively to effective factor of resistive leakage current than to non-effective factor of capacitive leakage current.
This is the IGR RCD(ELCB) specification explanation made by Korea.
IGR 누전차단기 규격 설명
A failed cutout 3 blocks away caused a surge and tripped the utility breaker. Procedure is to inspect the surge absorber for damage and reset. The reason I said leave the door open at ~0:36 is if there is a fault it will just blow out the open door rather than make a bomb out of it. This is a 1200A 120/208 service served by a 3.2Z 450KVA transformer 25 feet away (electricaly) with a 0.2 s clearing time on the load side an arcing fault is 19C. May seem a bit much but Im not the one to take a chance if there is a problem esp when dealing possible hidden damage due to surges and lightning. When surges and lightning happen they can leave conductive deposits and damage equipment in ways that dont show up untill its energized.
The noise in the background is the generator. The large grey cabinet is the automatic transfer switch, the small grey cabinet is the surge absorber, the silver cabinet contains the CT’s (current transformers) for the electric meter and the green cabinet is the transformer.