Cembre ZETAmini User manual

series

ZETAmini

®

series

ZETApiù

®

series

ZETA

block

®

INDIRECT CLAMPING

TERMINAL BLOCKS

FOR THE CONNECTION OF CONDUCTORS IN ELECTRICAL

SYSTEMS FOR CIVIL, TERTIARY AND INDUSTRIAL USE

GENERAL FEATURES

AND PRACTICAL EXAMPLES OF USE

IN ACCORDANCE WITH THE STANDARDS EN 60998-1: 2004 and EN 60998-2-1: 2004

EN60947-1: 2007+A1: 2011: 2014 and EN 60947-7-1: 2002

Preface

Cembre S.p.A. has been designing and

manufacturing electrical connectors and in-

stallation tools since 1969.

Over the years, it has progressively expand-

ed its presence in the sector, now occupy-

ing an important position at European level.

From the experience gained in the man-

ufacture of products for the production,

transport and distribution of energy,

Cem-

bre

has developed a complete range of in-

direct clamping terminal blocks (ZETAmini,

ZETApiù

and

ZETAblock) for the connec-

tion of conductors in electrical systems for

civil, tertiary and industrial use.

What was the rationale behind

Cembre’s

development of

ZETAmini

terminal blocks,

ZETApiù

single pole terminal blocks

and

ZE-

TAblock

indirect clamping power distribu-

tion blocks?

Careful analysis into the products on the

market has evidenced that electrical system

connections are often made with technolog-

ically outdated terminals.

Their design features make it difﬁcult to cre-

ate stable and safe electrical connections

in compliance with standards.

This causes problems when preparing the

"Declaration of Conformity"

of the electrical

system with regard to terminal connections,

which the installer must prepare and which

entails civil and criminal liability on the part

of the declarant. (Italian Law 46/90, Italian

Presidential Decree 462/2001, etc.).

In this regard, please note that the use of a

terminal bearing the CE marking or a mark

issued by a third party such as IMQ, is not

sufﬁcient in its own right.

The execution of a "state-of-the-art“ system

is in fact dependent on the correct use of

terminals, which must be installed in com-

pliance with the manufacturer's instructions

regarding

"connection capacity".

1

Connection capacity

The "connection capacity" of a terminal

corresponds to the maximum section of

the conductor that can be used and the

number and section of the conductors

with which, in combination , it can be con-

nected.

It is certified by the IMQ according to the

product standards EN 60998-1:1993-08

+ A1:2001, EN 60998-2-1:1993-08,

EN 60947-7-1: 2002

and EN 60947-7-

2: 2002

and is indicated in the catalogues

and on the terminal packaging.

The verification supervisor should ascer-

tain whether this connection capacity has

been respected.

Only by using marked material, and there-

fore certified, and by respecting the man-

ufacturer's instructions for use, can a

system be created that conforms to the

regulations in force.

The improper use of a terminal, even with

IMQ marking, may lead to the implementa-

tion of a non-compliant system.

If, for example, in the presence of the

CE

marking or the IMQ mark , the manufac-

turer declares a connection capacity lim-

ited to combinations of conductors of the

same section, the use of the terminal to

connect conductors of different sections is

to be considered

improper ; in this case

any damage or inconvenience caused by the

connection will be attributable to the install-

er who has not complied with the manufac-

turer's instructions for use.

Thanks to their original construction fea-

tures the ZETA terminal blocks allow the

connection of a very wide range of con-

ductors and therefore facilitate the con-

struction of systems that comply with the

standards.

in accordance with the standards

EN 60998-1: 1993-08 + A1: 2001,

EN 60998-2-1: 1993-08

EN 60947-7-1: 2002 and EN 60947-7-2: 2002

series

ZETAmini

®

series

ZETApiù

®

Anchor plate

for indirect clamping

entry holes

with conical inlet

for easy and quick

insertion of the

conductor

Captive

screws

terminals

with stop ends

for unused

inputs

equipotential

connection

plate

series

ZETA

block

®

2

Connection capacity

•

Example of connections

in which

the installer DID NOT RESPECT

the connection capacity declared

by the terminal manufacturer.

• Examples of connections made

with ZETAmini terminals, charac-

terised by a large connection ca-

pacity.

Example of use of the Z25-1 and Z35-1 type ter-

minals inside junction boxes

• The product has been used im-

properly, the "IMQ" mark cannot

guarantee compliance with stand-

ards and the declaration of con-

formity is not truthful.

• The installer WAS ABLE TO RE-

SPECT the connection capacity

declared by Cembre, creating a

system in compliance with cur-

rent regulations.

Example of use of Z6-1, Z10-1

and Z16-1 type terminals inside junction boxes

3

Connection capacity

Comparative table of ZETAmini and other terminals on the market

CEMBRE

ARNO CANALI

a

BM

b

ELECO

c

SCAME

d

TYPE

Section

mm²

Connection capacity

**