Maintenance Bypass
Product Overview
2
Switch Module
Quick Guide
V. 1.0
Introductio n
1
Th e modul e is used as a n exter n al main tenanc e bypas s switch t o provi de cont inuous
po wer wit h out shu tting d own the c o nnect ed loads d uring U PS sched uled ma intena nce
or b atter y repla cement . It’s perfe ct to use in c onjun ction wi th 6K/10 K VA UP S.
Ra c k M ount the Uni t
Th e m o d u l e c a n be mount e d t o a 1 9 ” e n c losure . P l e a s e f o llow bel o w c h a r t
fo r r a c k m ount ins t a l l a t i on.
1
Diagra m 1: Rea r Panel View
1
Input/O utput t ermina l
(refer t o Diagram 2 for t h e detai ls) UPS o utput te rmina l
2
UP S input b reake r UPS in put term inal
Ma inten ance byp ass swi t ch Uti lity in put term inal
3
4
Co ntrol o utput s ignal sl ot
2
3
4
5
6
7
8
Diagra m 2: Ter minal Overv iew
Ou tput te rminal
5
6
7
8
Installatio n
3
Unpack ing an d Inspectio n
Un pack th e packag e and che ck the pac kage co ntents . The ship ping
pa ckage c ontain s:
Ma inten ance byp ass swi tch modu le x 1
Qu ick gui de x 1
Co ntrol s ignal c able x 1
NOTE: Before in stalla tion, pl ease in spect th e unit. B e s ure tha t nothin g insid e the
pa ckage i s damage d durin g trans porta tion. Do n ot turn o n the unit a nd noti fy the
ca rrier a nd deale r immedi ately i f there is a ny dam a ge or lac king of so me part s.
Pl ease ke ep the or iginal p ackag e in a safe p lace fo r futur e use.
Initia l Setu p
Th e Insta llatio n and wir ing must b e perfo rmed in a ccord ance wit h the loca l elect ric
laws/re gulat ions and e xecut e the fo l lowin g instru ction s by prof ession al pers onnel.
1) M ake sure the mai ns wire a nd brea kers in t he build ing are e nough for the rated
ca pacit y of UPS to a void th e hazar ds of elec tric sh ock or fire.
NOTE: Do n ot use the wall re c eptac le as the in put pow er sourc e for th e UPS, as i t s
rated cu rrent i s less tha n the UPS ' s maxim um input c urren t. Othe r wise, t he rece ptacle
may be burn ed and de stroy ed.
2)Switch o ff the ma ins swi t ch in the b uildin g befo re insta llati o n.
3)Turn of f and shu t down the c onnec ted UPS.
4)P repar e wires b ased on th e follo wing ta ble:
UPS Mode l Wiri ng spec ( AWG)
6K /6KL 10
10 K/10K L 8
NOTE 1: Th e cable for 6K/6K L shoul d be able to w ithst a nd ove r 40A current. It i s
recomme nded to us e 10AW G or thic ker wir e for safety an d effic iency.
NOTE 2: Th e cable for 10K/1 0KL sho uld be abl e to with s tand over 63A cu rrent . It is
recomme nded to us e 8AW G or thicker wire for safety and e ffici ency.
NOTE 3: Th e select ions fo r color o f wires sh ould be f ollow e d by the lo cal ele ctrica l
laws and re gulat ions.
Operation
4
Transf er to Ma intenance B ypass
To tra nsfer t o mainte nance b ypass from UPS, follo w the belo w steps :
Step 1: Pr ess “OFF ” butt o n of UPS un it to transfe r to bypas s mode.
Step 2: Op en the mai ntena nce swit ch door. If step 1 is no t execu ted firs t, then U PS
un it will transfer to byp ass mod e automa tical l y with co ntrol ou tput si gnal co n necti on
wh en open ing the ma inten ance swi tch door.
Step 3: Trans fer rot ary swit ch to “BP S” posit ion and sw itch of f UPS inp ut breaker
on t he modu le. Then , all dev i ces are d irect ly powered by uti lity an d there i s no
cu rrent t hroug h the UPS. The outp ut and in put of UPS a re isol ated fr om the sy s tem.
You m ay now se rvice or m ainta in the UPS b y shutt ing dow n the bat teries o f UPS.
5) Remo ve the te rmina l block cover on t he rear pa nel of th e module . Then co nnect
th e wires a ccord ing to th e follow ing ter minal bl ock dia grams :
Connec t UPS an d External Ma intenance B ypas s Switch Modu le
Remove the term inal bl ock cov er on the r ear pane l of the mo dule. Th en conn ect
ou tput te rminal s of UPS to o utput te rmina l s of swit ch modul e. Conn ect util ity
in put ter minals o f UPS to UP S input te rmina l s of swit ch modul e. Conn ect sign al slot s
of U PS and sw itch mod ule with c ontro l signa l cable attache d to the pa ckage.
Refer t o the fol lowing t ermina l block d iagrams:
UPS
Mainte nanc e
Bypass S witc h
Module
Ou tpu t Line
Ou tpu t
Ne utr al
NOTE : Mak e sure th at the wires are co nnect ed tight ly with t he termi nals.
Pu t the ter minal bl ock cover back t o the rea r panel.
Input N eutral
Input L ine
Transf er to UP S Protectio n
Af ter mai ntenan ce servi ce is don e, foll ow below s teps to t ransfer back t o UPS
op erat ion.
Step 1: Sw itch on t he input b reaker of the mo dule an d reconn ect UPS b atter y input
breake r. Then UPS w ill ente r to bypa s s mode.
Step 2: Trans fer rot ary swit ch to “UP S” posit ion. The n, all de vices ar e power ed by
ut ility t hroug h UPS byp ass mode .
Step 3: Cl ose back m ainte nance sw itch doo r and pre ss “ON” b u tton o f UPS unit . Then,
al l devic e s are protecte d by the UP S.
NOTE: If m ainten ance wi l l be exe cuted in a nothe r place, b efore removi ng the UP S
an d the mod ule, ple ase fol low ste p s of “Transf er to Mai ntenan ce Bypa s s” and th en
di sconn ect all wi res bet ween UPS a nd the mo d ule fo r comple te isola tion.
Specificati ons of Critical Compon ents
5
Parame ter Ma x.
Input bre aker
By pass sw i tch
Input/O utput t ermina l
Cu rrent 6 3 A
Volt age 250 V
Cu rrent 6 3 A
Volt age 690 V
Cu rrent 7 6 A
Volt age 600 V
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