Col­umn – Al­lan Hill, NZEI

DEMM Engineering & Manufacturing - - CONTENTS - Al­lan Hill, Na­tional sec­re­tary/man­ager New Zealand Elec­tri­cal In­sti­tute

The New Zealand Elec­tri­cal In­sti­tute has been rec­om­mended by the EWRB to par­tic­i­pate in a tech­ni­cal com­mit­tee to pro­vide feed­back to the EWRB on the re­view and rec­om­men­da­tions re­gard­ing the elec­tri­cal worker au­dit regimes.

In 2013 the Elec­tri­cal Work­ers Reg­is­tra­tion Board (EWRB) ap­proached JAS-ANZ to seek its view on the ad­e­quacy of the ex­ist­ing au­dit frame­work for mon­i­tor­ing the com­pe­tency lev­els of elec­tri­cal work­ers.

In par­tic­u­lar the EWRB has been con­cerned that the au­dit regime may no longer be fit for pur­pose fol­low­ing re­cent changes to the Elec­tri­cal (Safety) Reg­u­la­tions which came into ef­fect on 1 July 2013.

Fur­ther, the EWRB is aware of a need and op­por­tu­nity to tighten the au­dit regime in some crit­i­cal ar­eas un­af­fected by those reg­u­la­tory changes.

JAS-ANZ has con­ducted its as­sess­ment of the EWRB au­dit frame­work and pro­vided a draft re­port and pre­lim­i­nary rec­om­men­da­tions to the EWRB. That draft re­port con­cludes that the ex­ist­ing au­dit frame­work re­quires a num­ber of changes to meet the EWRBs obli­ga­tions, and that those changes would nat­u­rally have ef­fects else­where in the elec­tric­ity sec­tor.

The EWRB is in­ter­ested in re­ceiv­ing in­dus­try feed­back by way of a project tech­ni­cal com­mit­tee on the JAS-ANZ re­port and rec­om­men­da­tions prior to wider in­dus­try com­ment be­ing sought.

Stan­dards up­date

DR AS/NZS 4024.3610 Safety of ma­chin­ery – Part 3610: Con­vey­ors – Gen­eral re­quire­ments (Re­vi­sion of AS 1755-2000 (in part)) – to pro­vide guid­ance and clar­ity in ap­ply­ing the prin­ci­ples ar­tic­u­lated in the AS 4024.1 se­ries of Stan­dards to con­vey­ors. Pub­lic com­ment on this draft stan­dard closes on 18 Fe­bru­ary.

DR AS/NZS 4024.3611 Safety of ma­chin­ery – Part 3611: Con­vey­ors – Belt con­vey­ors for bulk ma­te­ri­als han­dling (Re­vi­sion of AS 1755-2000 (in part)). To pro­vide guid­ance and clar­ity in ap­ply­ing the prin­ci­ples ar­tic­u­lated in the AS 4024.1 se­ries of Stan­dards to BMH belt con­vey­ors. Com­ments are in­vited un­til 18 Fe­bru­ary.

AS/NZS 3000 amend­ment 3 Elec­tri­cal In­stal­la­tions; (AU/NZ Wiring Rules), work has com­menced on the prepa­ra­tion of amend­ment No. 3. The de­tailed draft­ing work of the amend­ment will not start un­til for­mal ap­proval of the project is re­ceived from Stan­dards Aus­tralia, this is ex­pected in late Fe­bru­ary.

The con­tent of the amend­ment is mainly for the clar­i­fi­ca­tion of the ex­ist­ing AS/NZS 3000 text pro­vi­sions along with some up­dat­ing re­quired to cater for new or re­vised IEC, AS/NZS stan­dards.

It is ex­pected that a pub­lic com­ment draft of the AS/NZS 3000 amend­ment 3 would be re­leased mid year.

AS/NZS 3010 Elec­tri­cal In­stal­la­tions – Gen­er­at­ing Sets re­vi­sion. Work on draft­ing of this re­vi­sion is largely com­plete .

The lay­out of AS/NZS 3010 has been changed so that the main text of the stan­dard will cover gen­er­at­ing sets con­nected to an elec­tri­cal in­stal­la­tion by in­stal­la­tion wiring only and the con­nec­tion to an elec­tri­cal in­stal­la­tion by a sup­ply lead and plug/ socket ar­range­ments. The scope of the stan­dard has been in­creased to cater for 1 + 1, N + 1 gen­er­at­ing sets ar­range­ments and to pro­vide for closed tran­si­tion load changeover switches.

It was orig­i­nally pro­posed that AS 2790 Gen­er­at­ing set, would have been up­dated to cater for a wider range of gen­er­at­ing sets cur­rently avail­able and for the con­nec­tion of por­ta­ble ap­pli­ances by a plug /socket ar­range­ments.

The Stan­dards Aus­tralia com­mit­tee re­spon­si­ble for the con­trol of AS 2790 has been un­will­ing to re­vise this old stan­dard to take in the wider scope re­quire­ment.

The AS/NZS 3010 project com­mit­tee is now propos­ing to cover the con­nec­tion of por­ta­ble ap­pli­ances to a por­ta­ble gen­er­at­ing set in an ap­pen­dix. It is also propos­ing to a cover the en­gine and set con­struc­tion re­quire­ments in an ad­di­tional ap­pen­dix. The cov­er­ing of this ad­di­tional ma­te­rial in AS/NZS 3010 will re­sult in AS 2790 be­ing with­drawn from the Stan­dards Aus­tralia cat­a­logue when the re­vised AS/NZS 3010 is is­sued.

AS/NZS 3012 Elec­tri­cal In­stal­la­tions– Con­struc­tion and De­mo­li­tion Sites: Amend­ment No. 1; A cor­rec­tive amend­ment has been un­der de­vel­op­ment for some time to make mi­nor changes to the re­quire­ments for Por­ta­ble Socket Out­let As­sem­blies and the min­i­mum light­ing level for ac­cess ways un­der power fail­ure con­di­tions. Con­sid­er­able dis­cus­sions and site mea­sure­ments have taken place to come to a suit­able min­i­mum level of light­ing on ac­cess ways.

The amend­ment is to be dis­cussed in Syd­ney this month and it is ex­pected the amend­ment will be ap­proved for pub­lish­ing shortly af­ter the meet­ing.

EL-042 com­mit­tee

Rapid ad­vances and some de­lays in the Photo Voltaic (PV) equip­ment ap­provals for grid con­nect in­verter sys­tems to IEC 62109 have con­tin­ued to oc­cur in the In­ter­na­tional and in Aus­tralia and New Zealand ar­eas and this has re­sulted in de­lays in the com­ple­tion of AS/NZS 4777 se­ries and the AS/NZS 5033 stan­dards.

The vol­ume of pub­lic com­ments re­ceived for th­ese three stan­dards were high and cov­ered a wide area of the cov­er­age of each stan­dard. To re­solve all com­ments and cater for new pro­vi­sions re­quired for new equip­ment be­com­ing avail­able, have made the is­sue of a sec­ond pub­lic com­ment doc­u­ment nec­es­sary be­fore for­mal ap­proval to pub­lish of the stan­dards was sought

To date AS/NZS 5033 has been pub­lished, and the non-avail­abil­ity of in­vert­ers to IEC 62109 to date was

the cause of the re­cent amend­ment No.2 to AS/NZS 5033:2012. The need to cater for re­cently avail­able mi­cro-in­vert­ers has re­sulted in an AS/NZS 5033 pub­lic com­ment doc­u­ment be­ing re­leased in mid-2013. The pub­lic com­ments re­ceived have now been in­cor­po­rated into the base AS/NZS 5033 and com­mit­tee fi­nal ap­proval to pub­lish is be­ing sought to pro­ceed to pub­li­ca­tion.

As a mat­ter of in­ter­est, AS/NZS 5033 is be­ing used as the ba­sis for an IEC stan­dard for PV ar­rays.

To date AS/NZS 4777.1 and AS/NZS 4777.2 Grid con­nec­tion in­verter sys­tems drafts have been re­leased for pub­lic com­ment and this has re­sulted in a large vol­ume of pub­lic com­ment.

It has taken some time for the com­mit­tee to work through the pub­lic com­ments re­ceived and has re­sulted in some ex­ten­sive changes in some ar­eas of the draft doc­u­ment be­ing nec­es­sary.

As a fi­nal check, it is pro­posed to re­lease the re­vised drafts of AS/NZS 4777.1 and AS/NZS 4777.2 for a short pe­riod (ap­prox. six weeks) of fur­ther pub­lic com­ment.

Hope­fully, the pub­lic com­ment re­ceived will be very small and the fi­nal com­mit­tee ap­proval to pub­lish the stan­dards is able to pro­ceed af­ter the for­mal Stan­dards New Zealand and Stan­dards Aus­tralia ap­provals in early this year.

NZ Stan­dards

Elec­tri­cal In­stal­la­tions Co-or­di­na­tion com­mit­tee meets on an “as re­quired” ba­sis and will also be used as the equal of a “State com­mit­tee” for the vet­ting of the NZ only “AS/NZS 3000 Amend­ment No. 3” pro­pos­als, some of the Sec­tion 7 amend­ments from all EL-001 mem­bers will also be checked by this com­mit­tee.

For the pur­poses of this vet­ting, face to face meet­ings may not be re­quired.

LV sup­ply re­port com­mit­tee

Some help­ful pub­lic com­ments where re­ceived and th­ese have been in­cor­po­rated into the re­port to be pre­sented to En­ergy Safety, which had com­mis­sioned the re­port.

Un­til the de­ci­sion is made to adopt all rec­om­men­da­tions, or only partly adopt the re­port in a mod­i­fied form, the work of the orig­i­nal draft­ing com­mit­tee has been com­pleted.

The draft­ing com­mit­tee is be­ing re­tained to­gether, and may have oth­ers may be co-opted to com­plete any work re­quired; one of those func­tions may be the draft­ing of a “TT re­quire­ments sup­ple­ment to AS/NZS 3000”.

The com­mit­tee is mind­ful that some ma­te­rial suit­able for the “up skilling” of elec­tri­cal work­ers on the TT sys­tem of sup­ply will be re­quired if this rec­om­men­da­tion of the re­port is adopted.

Dairy sheds P 6117 com­mit­tee

The pub­lic com­ments on the Dairy shed doc­u­ment where con­sid­ered at a meet­ing of the com­mit­tee on the 12 De­cem­ber 2013.

Fur­ther dis­cus­sions be­tween Stan­dards and En­ergy Safety (now WorkSafe) are in hand.

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