PS Magazine - TB 43-PS-487

PS, The Preventative Maintenance Monthly

ISSUE 487

JUNE 1993
PS Magazine - TB 43-PS-487 - Page 41 of 43
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\
hen you operate the distrIbuTion illumInaTIon system, eLectr±cal (O²SE) ±n the
summer³ you'lL need to decrease the electrIcaL Load because h±gh TemperaTures Tr±p
The tHermal-magneTic cIrcuIT breakers.
·
CIrcuIT breaKers heaT up when They caRry currenT´ When The aIr Temperature is
highµ The breaKer heaTs up more¶ ·hen ±t Trips at a Lower amperage than IT¸s rated f¹rº
Power»O¼SE equipmeNT has hydrau½ic-magneT±c cIrcu¾T brea¿ersÀ whIch are less
sensitIve To h±gh temperatures¶
When you use The D²SE To power equIpmenT thaT must hAve an un±nterrupTed
power supplY³ The load caÁacÂTy oF The cIrcuÂT breaker should be reduced
and³ ià necessaÄyÅ The Load shouLd be red±sTribuTedÆ
·he load can be redIsTrIbuTed by movIng Loads to dIÇÃerenT circu±T breakersÅ addIng
another DÈSE box or usIng a D²SE box w±Th a higher ampere ratIng¶ ÉM
9-6Ñ50Ò
22ÓÒÔ3
and ÊË
2ÕÖ×Ô
have The InÌrmat±on on Load baLancingÍ
ÎememberÏ no maTTer whaT The TemperaTure³ never Ðoad The cIrcu±t breaKers To
The±r FuLL capac±Ty because oÑ load ýucTuaTIons during sTarT±ng and stoppingº
·Äy to avoId exposing the D²SE To dIrect sunl±ghTÒ ÓuT D²SE boXes ±n The shade
or maKe shade ùr The boXesÍ Be sure The D²SE boxes are welL veNTILatedÔ
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