DSH 589 Spray-on insulation system

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DSH 589 + E9 h5 K. T$ z) m7 H   b: M  @- q/ s$ o5 c

Spray-on insulation system

General

61730-1(ed.1) & 61730-2(ed.1) ! D' D, m4 L3 Y" Q$ x

3 D0 O( s7 v+ F" T# z) Q6 IStandard(s)- IEC 61730-1, -2 Sub clause(s): DSH No 589
Page: 1(1)
Subject: Spray-on insulation
7 v; i# a5 n. J& Dsystem
* o+ k2 g, W0 O& Y6 AKey words:
/ O3 |' O/ e( M' M0 [$ z9 MSprayed insulation system
Decision approved by the CTL
during its 43rd meeting in
Johannesburg
1 ^5 Z6 r% G" X, p; C( s4 p6 YQuestion: A manufacturer has presented a new type of insulation (backsheet) for use on PVmodules.
The insulation material (plastic) is sprayed onto the back of the module. After it is hardened, a
- E& g! x" M& qsecond 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
$ N! p" G' [, {  @! z' Hinsulation. Spray-on insulation is something like paint but IEC 61730-1 and -2 say nothing against
such an insulation.
Is 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?
: o6 ]0 T$ n- W& d  ^" S+ VDecision:
; q) B8 {1 G0 x) s2 {: NRequirements 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
/ ?# n$ p0 M" L/ x* fmodules. 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
discretion of the NCB.
6 S# O: W& S2 ^6 J