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ASCO POWER TECHNOLOGIES Series 300 - page 1
381333–122 B ASCO P OWER T ECHNO LOGIES L.P . 50 Hanover Road , Florham Park, New Jersey 07932 USA www .asco.com Operator’s Manual Seri es 300 Automatic T ra nsfer Switc hes G de si gn 1000 thro ug h 3000 am ps 1000, 1200, 1600 amp. sizes DA NG ER is us ed in this m a nua l t o wa rn o f hig h voltages c apable of causi ng shock , burns, or dea ...
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ASCO POWER TECHNOLOGIES Series 300 - page 2
Namepl ate The T ransfe r Switch name plate i ncludes data for each spec ific A SCO Series 300 A TS. Use the A TS only with in the limits shown on t his nameplate. Catalo g Number Indentification A typ ica l C a ta log Numbe r i s s hown be lo w with i ts elements explain ed. Th e example is for a G–desig n Seri es 300 A TS with s witched ne utra ...
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ASCO POWER TECHNOLOGIES Series 300 - page 3
SECTION 1 INST ALLA TION 1- - 1 A SCO Series 300 A utom atic T rans fer Switches (A TSs ) are Listed unde r Underwriters L aboratori es UL 1008 Standard for Safety for A u tomatic T ransfer Switc hes. Al l control feature s are U L Component R ecognized, which assures tha t ASCO automatic transf er switches meet OSH A Safety R equ irements and will ...
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ASCO POWER TECHNOLOGIES Series 300 - page 4
INST ALLA T ION (continued) 1- - 2 Contr oller Ground A g rounding wire must be c onnected to the c ontroll er’s lower left mounti ng stud. Because the c ont roller is mounted on the e nclosure door, a c onducti ve strap must be used between the enclosure a nd the door. Thi s connection provides prop er grounding which do es not rely upon the doo ...
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ASCO POWER TECHNOLOGIES Series 300 - page 5
INST ALLA T ION (continued) 1- - 3 F unctional T est The F un ctional T est consists of three c hecks: manu al operation, v oltage c hecks, an d elec trical op eration. Do thes e checks in the ord er pre sente d to avoi d damaging t he autom atic t ransfe r swit ch. ! R ead all instructi ons o n t he W iring Di agram a nd labels affixed to the auto ...
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ASCO POWER TECHNOLOGIES Series 300 - page 6
INST ALLA T ION (continued) 1- - 4 Pres s until light FLASHES Pres s for 15 Se conds Flo rha m P ark NJ 07932 USA TRA NSFE R SWITC H TEST B YPA SS TIM E DELA Y SE T E N G IN E E X E RC I S E R observe these l ights Figure 1–5. Standard control s and indicators. 2–V o l t a g e C h e c k s First check nameplate on tra nsfer switch; rate d voltag ...
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ASCO POWER TECHNOLOGIES Series 300 - page 7
INST ALLA T ION (continued) 1- - 5 Pres s until light FLASHES Pres s for 15 Se conds Flo rha m P ark NJ 07932 USA TRA NSFE R SWITC H TEST B YPA SS TIM E DELA Y SE T E N G IN E E X E RC I S E R observe these l ights p r e s st h i sb u t t o n Figure 1–6. Standard control s and indicators. 3 – Electrica l Oper ation First check nameplate on tra ...
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ASCO POWER TECHNOLOGIES Series 300 - page 8
Hol d 15 sec .t o start t he engine generator and to transf er the load to emergency . Press to cancel the active exercise period (sto ps engine now or afte r cooldow n) Se e page 5– 1. Hol d 5 sec .t os e t 20 min. engine ex ercise perio d imm ediatel y (engine starts) and weekly thereafter . · blink s slowly w hen button is r eleased (set) and ...
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ASCO POWER TECHNOLOGIES Series 300 - page 9
SECTI ON 3 TEST ING & SER VICE 3- - 1 PREV ENTIV E MAINTEN ANCE R eas onabl e car e in prev entive m aintenanc e wil l ins ure high reliabilit y and long lif e for the automatic transfer switch. Ope rate t he swi tch at l east o nce a mont h .P e r f o r m t h i s four step El ectrical Operation T est. This is a test with load tr ansfer. Pres s ...
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ASCO POWER TECHNOLOGIES Series 300 - page 10
TEST ING & SERVI CE (continued) 3- - 2 MANUAL L OAD TR ANSFE R This pr ocedu re wil l man uall y transfer the l oad if th e cont ro ller i s d i scon ne cte d. Do no t manua lly o perate the transfer switch until both po wer so urces are d isconnected: open both circuit breakers. ! 1. Open normal a nd e mergency sourc e circuit breake rs. 2. Us ...
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ASCO POWER TECHNOLOGIES Series 300 - page 11
SECTION 4 ADJUSTMENTS 4- - 1 Ti me D e l ay Ad j u st m e n t Standard ti me delays are set to customer specifi cations (if none specif ied, st andard fa ctory sett ings are used). T o change a sett ing, follow procedure on page 4-2. Use T abl e 4-1 as a guid e to time del ay values and their cor re- sponding adjustment DIP switch or potentiometer. ...
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ASCO POWER TECHNOLOGIES Series 300 - page 12
ADJUSTM ENTS (continued) 4- - 2 Do not m ake a ny setting cha nges while the control le r is energized. ! How to Change a Setti ng 1. P revent the transfer switch from operating by discon - nec ting one s ource fir st, then the other , as foll ows: a. If the transfer s witch is in the Nor mal position, ope n t he e merge ncy sou rce ci rcu it bre a ...
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ASCO POWER TECHNOLOGIES Series 300 - page 13
SECTION 5 CONTROL FEA TURES – ENGINE EXERC ISERS 5- - 1 These timer s periodical ly exerc i se the em ergenc y engine-gen erator p lant. They can be s et to exerc ise w i th or w i thout load tr ansfer, or they can be com pletely disabled . The engine-g enerator should b e exerc ised under load once a week for a minimum time period of 20 minutes, ...
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ASCO POWER TECHNOLOGIES Series 300 - page 14
CONTRO L FE A TU RES (continued) 5- - 2 OPTIONAL PR OGR AMM ABLE E NG INE E XER CISER ( Ac c essory 11CD) The op tional p rog ramm abl e eng ine exer ciser provid es seven days of di ffere nt exe rcise periods. The t imer is connected and m ount ed below the controller. A perm anent bac kup battery maintains the setting; w hen power is lost to time ...
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ASCO POWER TECHNOLOGIES Series 300 - page 15
CONTRO L FE A TU RES (continued) 5- - 3 How to Set Optional P r ogram m able Engine E xerciser (A ccessory 1 1CD) Proceed with care! The a uto ma tic tr ans fe r sw itch is en erg ized . ! Setting the Clock (T i me and Da y) Step Press Button Display Mean ing 1 reset 1234567 (blink) 00 00 ¬ f after self -test, cl ears me mory 2 hold h ,t h e n ...
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ASCO POWER TECHNOLOGIES Series 300 - page 16
CONTRO L FE A TU RES (continued) 5- - 4 INPHASE M ONITOR FOR M OTOR LO AD TR ANSF ER Inphase monitori ng log i c controls transfer and retransfer of motor loads, so that i nrush currents do not exceed normal st arti ng currents. It avoi ds nuisa nce tri pping of circ uit breakers and mechan ical dama ge to motor coup li ngs. The Motor Load T rans f ...
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ASCO POWER TECHNOLOGIES Series 300 - page 17
CONTRO L FE A TU RES (continued) 5- - 5 OPTIONAL STR IP HEA TER ( Accessory 44) A cces sory 44 Strip H eater is designed to keep am bient temp eratures within th e A utomatic T ransfer Sw itch en closu re a t a ccep ta ble le ve ls. T hi s a cces sor y con si st s o f a mou nting brac ket with strip heater , therm ostat, and terminal block. A tra n ...
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ASCO POWER TECHNOLOGIES Series 300 - page 18
INDEX Printed in U .S.A . E 2001 ASCO Power T echnologies, L .P . A accessories, 5–2, 5–3, 5–4, 5–5 auxil iary circ uits, 1– 2 B barriers, 1–3 battery , 4–2, 5–1 buttons, push, 3–1 bypass time delay, 1–4, 2–1, 3–1 C cable lugs, 1–1 prepar ation, 1–1 spacers, 1–1 illustration of, 1–1 cat alo g nu mber, in si de co ve ...
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