Proposal for  amendment to the legal inspection r egulation for  explosion 
proof motors 
 
By the Bur eau of  Standards, Metrology and Inspect ion (BSMI) , Ministry of  Economic Affairs 
 
 
 
Backgr ound : 
At the request of industry  and the objective of  ensuring protection of workers in the working 
place, the Bureau of S tandards Metrology and Inspection (BSMI), having coordinated with the 
Council of La bour Affairs (CLA), the regulator y autho rity of safety  of workers, would li ke to re quire 
that explosion proof m otors pass legal inspection before they  are marketed. 
Currently , explosion proof  motors are subject to m andatory inspection b y BSMI , but t he origi nal 
inspection standard CNS 1 1799  is dif ferent from  CLA. In order to  make consistency  of inspe ction 
standard, the BSMI will refer to the CLA's explos ion proof m otors series st andard of CNS 3376 or 
IEC 6007 9 as new safety  testing standard . 
 
Proposed date of implementation:   
January  1, 2013 
 
Table of explosion pr oof e lectri c motor s (HS/CC CN codes) cover ed and their  applicable 
inspection st andards: 
 
C.C.C. C ode 
(the first 6 digits 
are the s ame as 
HS Code) Descripti on of Good s Inspec tion Standar ds 
8501.40.10.00-8 Other explosion proof AC motors, 
single-phase (inspection scope: only 
below 22.5kW  and withou t other 
device) CNS 1057 (2001), CNS 3618 
(1992), Series of CNS 337 6 or 
IEC 60079 
8501.51.10.00-4 Explosion proof AC motors, 
multi-phase, of an output exce eding 
37.5W  but not exceedi ng 750W  
(inspectio n scop e: withou t other 
device) CNS 1056 (1999), CNS 14400 
(2003), Series of CNS 337 6 or 
IEC 60079 
8501.52.10.00-3 Explosion proof AC motors, 
multi-phase, of an output exce eding 
750W  but not exceedi ng 75kW  
(inspectio n scop e: on ly below 22 .5kW 
and without other device) CNS 1056 (1999), CNS 14400 
(2003), Series of CNS 337 6 or 
IEC 60079 
 
Conformity Assessment Scheme 
The applicable conform ity asse ssment sc heme for explosion proof motors list ed in the Table is  
Registration of Product Ce rtification (RPC) Schem e (Module II+III)  
 
Notes: 
Module  II & III of Regist ration of Pr oduct Certifi cation (RPC) Scheme 
Under this pr ocedure, domestic manufacturers or im ports m ust hav e their produc ts type-tested in 
advance (Module II) befor e apply ing for registration of  their products. Manufacturers or im porters will 
also be required to ensure by declaration that a ll products made at their manufactu ring facilities are in 
 1conform ity with the prot otypes subm itted for t ype test at Module II stage, and the declaration 
procedure is called Module III (conformity -to-type declaration). The conform ity-to-type dec laration 
shall be drawn up by the manufacturer or the aut horiz ed local repre sentative, dec laring that the  
products m ass-produced will com ply with the prot otype as describ ed in the t ype-test report. Products 
will be allowed to use the RPC Certification Mark  with designated letter “R” and the identific ation 
number given by  the BSMI, after they  are certified an d registered with the BSMI. Both the application 
fee and annual fee for RPC is NT$5,000 f or each ty pe of product, and a RPC certi ficate is generally  
valid for thre e years. 
 
Other  inspection r equirements for  the explosion p roof motors listed in the Table: 
1. The standard CNS 1 1779 (1993) will be not appli cable to the m andator y inspe ction of expl osion 
proof m otors from  January  1, 20 13 
2. For those explosion pro of produc ts which have been certified befo re date of im plementation, the 
transient m easures are as follows: 
(1) These RPC certification can still be used until their expiry  dates. 
(2) These certifi cation holders can apply  for the ex tension of validity of their certifica tes according 
to current requirem ents if the expiry  dates of these certificates  fall before De cember 31, 2012,  
and their terms of validity are 3 years starti ng from  the respe ctive re-issue date; but if the 
expiration dates fall after January 1, 2013, these certificates c an not be  used to apply for the  
extension of validit y. 
(3) These certification holders can still apply for adding serial model(s) registration according to  
current requirem ents before Decem ber 3 1, 2012. 
3. The explosio n-proof  type test according to CNS 3 376 or  IEC 6 0079  shall b e perform ed by the 
institute recognized by the  Council of  Labor Af fairs. The ot her safety  and performance ty pe tests 
shall be im plem ented at th e BSMI or BSMI- designated Testing Laboratories. 
4. The ti meframe for co mpleting the review of i ssuing RPC certificate is 14 working da ys, excluding  
the tim e peri od, if necessary , of waiting for anothe r sample and/or necessary  docu ments for review 
and evaluation. Another  7 working day s will be  needed t o take another sam ple for the 
above-mentioned review and evaluation process. 
5. The obligato ry applicants  can print or af fix the RPC Certification Marks on the produc ts by  
themselve s. 
6. The inspection standards shall be the version as listed in this public noti ce. When the applicabl e 
standards are  revised or a mended, the date of  applying these revised or am ended standards for  
inspection sh all be further decided and annou nced b y the BSMI. 
7. The technical docum ents required for t ype test (excluding ex plosio n proof  test) shall be prescribed  
by the BSMI. 
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