The latest edition of the Elektro Tipp elaborates on the new draft of IEC 60364-7-712 concerning requirements for PV systems.

1. THE ELEKTRO
Customer information for electro-technical specialists 2/2011
Dear Readers,
Collection of new ideas in the Electrotechnical Industry
As far as we know, no other com-
pany in the industry has expanded as
systematically into the photovoltaic
(PV) market as Hensel.
The requirements for safe PV instal-
lation have risen continuously pri-
marily because it has recently been
discovered that in many parts of the
world some grave errors were made
in installation which will have a long-
Published: The new draft
lasting impact on the life cycle and/
or the performance of PV plants. We
have also heard of damage that has
of the IEC 60364-7-712!
led to the destruction of important Requirements for Photovoltaic (PV) power systems
components.
In today’s Elektro-Tipp, we want to The dynamic development of es already mentioned, photovolta-
emphasize our expertise in generator equipment technology and the ic equipment is being used in more
junction box solutions for both on-grid expansion of areas where pho- and more new application areas.
as well as off-grid and only grid re- tovoltaic plants are used make it
quirements. We would love to talk Thus the draft of IEC 60 364-7-712
necessary to re-examine the regu-
to you about the specifics involved. was expanded for the first time to
Please call us! lations governing their electrical
regulate photovoltaic equipment
installation.
The many and successful projects which may supply as an alterna-
98 17 0654 02.10/101/12
indicate the enormous amount of A lot experience gained in the
tive to a public grid and those sup-
trust system suppliers for photovolta- years since the last edition of
ic plants have in us. plying an installation which is not
IEC 60 364-7-712 in 2002 was in-
troduced in its current version. connected to public grid (stand-
alone) and where no public grid is
The requirements governing light-
ning and surge protection, protec- available.
tion against electric shock and fire The following pages will illustrate
F.G. Hensel. protection were especially impor- how the application of this stand-
Managing Director tant. ard shall be implemented on pho-
Gustav Hensel GmbH & Co. KG
In addition to the technical chang- tovoltaic equipment in practice.

2. These application areas for PV systems are now defined by the
new IEC 60364-7-712 (Draft):
Grid-connected operations Off-grid operations Power storage
GRID System ON GRID System OFF GRID System Power storage operate
PV system used to provide PV system for consumer power PV system for consumer power PV system with power storage independently of n in PV systems for consumer power production
grid support production production with power storage the power grid. in alternative to a system for distribution of
electricity to the public.
„PV systems for supply to an installation „PV systems for supply to an installation „PV systems for supply to an installa- „PV systems for supply to an installation which is not
n and for stand-alone supply to an installation
in parallel with a system for distribution in parallel with a system for distribution tion as an alternative to a system for connected to a system for distribution of electricity to
which is not connected to a system for distributi-
of electricity to the public“ of electricity to the public“ distribution of electricity to the public.“ the public (stand alone)“
on of electricity to the public.
PV generator PV generator PV generator PV generator Example: Battery
direct current
PV generator junction boxes PV generator junction boxes PV generator junction boxes Battery distributor
Centralized solar inverter String solar inverter Solar inverter Stand-alone inverter
DC
Source: Kostal Source: SMA Solar Technology AG
AC
alternating
current Source: Kostal
Source: SMA Solar
Technology AG
Solar inverter collector Solar inverter collector Solar inverter collector
ENYSUN photovoltaic distribu-
tors from Hensel for DC and AC
areas in PV plants work reliably
and conforming to standards in
all ranges of applications!
Electrical installation or public power supply Electrical installation

3. Phtotovoltaic solutions from Hensel:
safe, conforming to standards, DK Cable junction boxes
pre-fabricated!
2
1.5 to 240 mm , IP 54-67
Email: info@hensel-electric.in ∙ www.hensel.in
Safe ENYSUN distribution boards of Hensel for the DC and AC area in PV
systems for all applications! KV Small-type distribution
boards up to 63 A,
All ENYSUN distributors ful- n uitable for the unprotected
S
n Impact resistant: IK 08
3 to 54 modules, IP 54- 65
n tainless steel external brack-
S
Phone: +91-44-3727 0202
fill the requirements of the new outdoor installation:
Fax: +91-44-3727 0200
IEC 60364-7 - 712 (Draft). UV and korrosion resistant ets for box fixing
High quality materials ensure long- n ust and waterproof:
D
n accordance with
In
term effective functioning. Degree of protection IEC 61 439-1/-2
IP 54/IP 65 Distribution boards
Combinable enclosure system
PV Generator junction boxes Battery distributors Solar inverter collectors with door up to 250 A, IP 65
Sriperumbudur - 631 604 ∙ Kanchipuram Dist, Tamil Nadu
Mi Distribution boards
up to 630 A, IP 54-65
Sunguvachathram - Walajabad Road
4th km behind Samsung/Flextronics
Cable entry systems
n Protection class: II  n Protection class: II  n Protection class: II 
n ready for connection n eady for connection resp.
r
n omplete enclosure sets, which
c
n rated current: up to 400 A complete enclosure sets can be individually adapted to
n rated voltage: n ith protective devices for out-
w
each environment
DC 1000 V (UOC STC) going circuits to solar inverters n ptional with AC overvoltage
o
Construction board panels
n up to 24 PV strings
for n ith disconnect switch to dis-
w
protection device up to 630 A, IP 44-65
n ptional with DC overvoltage
o
connect the battery from the n solar inverters up to 11 kW, 1~
for
protective device for PV plants distributor for solar inverters up to 33 kW, 3~
n rated current: up to 400 A n ax. rated operating current:
m
n rated voltage: DC 120 V 48 A
n rated power: 70 kW, 140 kW
Photovoltaik distributors
that meet the standards
Would you like to know more about the innovative products by Hensel?
Stay one step ahead … think along new lines …let’s meet and talk.
Industrial Electric Power Distribution Systems
5th RENEWABLE ENERGY
INDIA 2011 EXPO
International Exhibition &
Hensel Electric India Pvt Ltd
Conference Solarcon India 2011 Inter Solar India 2011
Pragati Maidan, New Delhi Hyderabad Mumbai
10-12 August 2011 9-11 November 2011 14-16 December 2011
35 Kunnam Village
Booth 13, Hall 7E Booth 305 Booth 1368
Delivery in India via Hensel authorized distributor network R. Rajesh
spanning 130 cities and industrial centers. Managing Director
Hensel Electric India
Delivery in South East Asia via Hensel authorized distributor Pvt Ltd
network in all ASEAN countries. info@hensel-electric.in
www.hensel.in