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Emerson 381333122 E - page 1
381333–122 E 50 Hanove r Road, F lorham Park, New J ersey 07932–1591 USA For sales or service call 1 800 800–2726 (A SCO ) www .ascopower .com AS CO PO WER TECH NO LOGI E S CA NA DA PO Box 1238, 17 Ai rport Road , Brantf ord, O ntario, Cana da N 3T 5L3 Operator’s Manual Seri es 300 Automatic T ransfer S witc hes G d esi gn , 1000 thro ugh 3 ...
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Emerson 381333122 E - page 2
Namepl ate The T rans fer Switch nam epla te incl udes data for each sp ecific A SCO S eries 300 A TS. Use th e A TS only wit hin the limits show n on this namep late. Ca talog Num ber Identif ication A typ ica l Ca ta lo g Number is sho wn bel ow w it h it s elements ex plained . Th e example is fo r a G–desig n Seri es 300 A TS with swi tched n ...
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Emerson 381333122 E - page 3
SECTION 1 INST ALLA TION 1- - 1 A SCO Series 300 A utomatic T ransfer Sw itches (A TSs ) are Liste d under Underwriters L aboratori es UL 1008 Standa rd for Safe ty for A utomati c T ransfer Swit ches. Seri es 300s are also Liste d under CSA C22.2 No. 178 Sta ndard for A T Ss. All c ontrol features are UL C omponent R ecog nized, which assures tha ...
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Emerson 381333122 E - page 4
INST ALLA TION (continued) 1- - 2 Contr oller Ground A g rounding wire m ust be c onnected to th e control ler’s lower left mounting stud. Be cause the controller is mounted on the enclosure door, a conductive strap must be used between the enclosure and the door. Thi s connection provides prope r grounding which does not rely upon the door hinge ...
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Emerson 381333122 E - page 5
INST ALLA TION (continued) 1- - 3 F unctio nal T est The F unctional T est consists of thr ee chec ks: manual operation, v oltage checks , and elec trical operation. Do these che cks in the orde r pres ented to avoi d damagin g the aut omati c tran sfer sw it ch. R e ad all instructi ons on the W iring Dia gram and labels affixed to the autom atic ...
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Emerson 381333122 E - page 6
INST ALLA TION (continued) 1- - 4 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 swi tch; rated voltage m u s tb et h es a m ea sn o r m a la n de m e r g e n c yl i n ev o l t a g e s . V erify that t he feeders have been connected to the pro per l ugs. U s ee ...
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Emerson 381333122 E - page 7
INST ALLA TION (continued) 1- - 5 p r e s st h i sb u t t o n observe these l ights Figure 1–6. Standard control s and indicators. 3 – Electrica l Opera tion Th i s pr oce du re wi ll che ck t he e le ctr ica l o pe rt i on o f t he A utomatic T ransfer Switc h. Clos e the e nclosu re door fi rst ! T ransfer T est Both norm al and emerg ency so ...
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Emerson 381333122 E - 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 immediately (engine starts) and weekly thereaf ter . ³ blinks sl owly when button is r eleased (set) and d ...
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Emerson 381333122 E - page 9
SECT ION 3 TEST ING & SERVIC E 3 --- 1 PREV ENTIV E MAIN TENANC E F or high re liabil ity and long lif e for the A TS: Ope rate t he swi tc h at l east o nce a mont h .P e r f o r m t h i s 4–step Electrical Operat ion T e st (te st with load t ransfer). T ra nsfer Swit ch T est 1. Press and hold the door - mounted T ran sfer T est button unt ...
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Emerson 381333122 E - page 10
TEST ING & SERVIC E (continued) 3 --- 2 MANUAL L OAD TR ANSFER This pr oced ure wil l m anual ly tran sfer the l oad if the cont ro lle r is d i sco nne ct ed . Do no t manua ll y op erate the transfer switch until both po wer so urces are disconnected: open b oth circuit breakers. 1. Ope n normal a nd e mergency source circuit breake rs. 2. Us ...
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Emerson 381333122 E - page 11
SECT ION 4 ADJUST MENTS 4 --- 1 Ti me De lay A d j u st m e nt Standard ti me delays are set to customer specifi cations (if none specif ied, st andard factory set tings are used). T o change a set ting, follow procedure on page 4-2. Use T abl e 4-1 as a guid e to time del ay val ues and their corre- sponding adjustment DIP switch or potentiometer. ...
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Emerson 381333122 E - page 12
ADJUST MENTS (continued) 4 --- 2 Do not make any setting chang es 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 ourc e first, then the oth er, as foll ows : a. If the transfer s witch is in the No rmal position, ope n t he e mer gen cy sour ce ci rcui t bre a k ...
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Emerson 381333122 E - page 13
SECTION 5 CONTROL FEA TUR ES – ENGINE EXERC ISERS 5 --- 1 These timer s periodical ly exerc ise the emer genc y engine-g enerator pl ant. They can be set to exer cise with or w ithout load tr ansfer, or they can b e compl etely disabl ed. T he engine-g enerator sh ould be exerc ised under l oad once a week for a minimum time period of 20 minutes, ...
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Emerson 381333122 E - page 14
CONTRO L F EATURES (continued) 5 --- 2 Opt ion al Ac ce ssory 11BG – SOU RCE AV AILABILIT Y SIGNAL & P ROGRAMMA BLE ENG INE EX ERCIS ER MODU LE 2–line display 3 buttons connectio ns for source ava ila bilit y signal co ntacts Figure 5–2. Accessory 11BG module (mo unted behind operato r interface and connected to the contro ller) incl udes ...
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Emerson 381333122 E - page 15
Fa s t/ Sl o w A d j u st Dayl ight Savi ng Time A dj ust Date Time Start T Ime Engine Exerciser Run TIm e CONTRO L F EATURES (continued) 5 --- 3 How to Set Option a l Progra mm ab le En gin e Exe rcis er (p art o f Acc. 11B G module) Haz ardous v oltage ca pable of causi ng shoc k, burns, or death is used in this t ransf er switch. Deenergize bo t ...
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Emerson 381333122 E - page 16
CONTRO L F EATURES (continued) 5 --- 4 INPHASE M ONITOR FOR M OTOR LOAD TRAN SFE R Inphase monitori ng logic cont rols tran sfer and retransfer of motor loads, so that i nrush currents do not exceed normal st arti ng current s. It avoids nuisa nce tri pping of circ uit breaker s and mec hanical d amage to motor coup li ngs. The Motor Load T ransfer ...
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Emerson 381333122 E - page 17
CONTRO L F EATURES (continued) 5 --- 5 OPTIONAL STR IP HEA TER (Accessor y 44) A cc essory 44 Str ip Heater is design ed to keep ambient temp eratures w ithin the A utom atic T ransfer Sw itch en closu re a t a cce pt ab le lev els . T hi s a cce sso ry co ns i st s of a mou nting brac ket with strip heater, thermos tat, and terminal block. A trans ...
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Emerson 381333122 E - page 18
INDEX Printed in U .S.A . Copy right - - - ASCO Power T echnologies, L.P . 2009 A accessories, 5–2, 5–5 auxil iary cir cuits , 1–2 B battery , 4–2, 5–1 buttons, push, 3–1 bypass time delay, 1–5, 2–1, 3–1 C cable lugs, preparation, 1–1 cat alo g nu mber, ins id e co ve r cleaning, 3–1 connections engine control contact, 1–2 l ...
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