DSH 589 Spray-on insulation system

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DSH 589 / c; @) t. C4 K0 o6 }

Spray-on insulation system

General 4 o3 M" f8 D. t! p6 u

61730-1(ed.1) & 61730-2(ed.1)   x. D' ^$ k! z" g

Standard(s)- IEC 61730-1, -2 Sub clause(s): DSH No 589
+ p6 _0 J( n. R; Q" OPage: 1(1)
Subject: Spray-on insulation
system
! g/ W6 f+ F2 T2 LKey words:
Sprayed insulation system
. S8 V. }2 ?- o5 X# x5 k, mDecision approved by the CTL
during its 43rd meeting in
Johannesburg
Question: A manufacturer has presented a new type of insulation (backsheet) for use on PVmodules.
) q8 k* Y  y7 h9 N+ [) F% KThe insulation material (plastic) is sprayed onto the back of the module. After it is hardened, a
second layer is sprayed onto the module. These 2 layers passed all tests of IEC 61730-1 and -2.
Basic standards (e.g. IEC 60364-4-41 clause 4.12.1) do not allow varnish/paint to be used as
insulation. Spray-on insulation is something like paint but IEC 61730-1 and -2 say nothing against
such an insulation.
7 _1 n: o& ?7 ]+ L& v( SIs the use of a spray-on, or similar type of electrical and environmental coating system allowable
for certification to IEC 61730-1 and IEC 61730-2?
Decision:
: h, r" _' @  Z8 i# C8 w9 sRequirements for construction and performance as specified in IEC 61730-1:2004 and IEC 61730-
2:2004, respectively, are sufficient for evaluation of unique insulating systems on photovoltaic
1 w3 T& ?7 T; \modules. Although these standards provide suitable rationale for evaluating the construction and
performance of the samples obtained by the CBTL, the issue of certification remains at the
" \6 D- D; X% Q# o( I  adiscretion of the NCB.
. P  F+ r3 s. ^2 g% X% R' _
9 e% q( j  d( |2 H, h6 v' x: t7 g. v