Products » New standard IEC 61439 » MENNEKES standard values

MENNEKES standard values in accordance with Table C of IEC 61439

The information below represents specified standard values for MENNEKES catalogue assemblies. If there are deviations from this standard or in the case of special project planning, appropriate coordination must take place beforehand between user and manufacturer. These agreements must be arranged between MENNEKES and the user / customer during the quotation phase (prior to production and prior to sale).
The table below is a "blank" that is applicable for approximately 98% of the MENNEKES devices. Special project planning is not covered by the specifications, and must be separately disclosed by the user prior to project planning. In these special cases, it is required that additional details be considered with the aid of the standards cited and their product sub-standards (see Section 7.2, in Part 1).

Characteristic

Standard value

Normative option

MENNEKES standard

System according to type of
earth connection

Design in accordance with the local requirements

TT / TN / IT

TN

Rated voltage

In accordance with local
installation conditions

max. 1000V AC or 1500V DC

400V AC

Transient overvoltages

determined through the
electrical system

Overvoltage category
I / II / III / IV

Cat. III / plugs and sockets
Cat. II

Occasional overvoltages

min. rated voltage
+ 1200V

See Table 8 + 9 or 10 for the values

1890V (AC)

Rated frequency

in accordance with installation conditions

DC / 50Hz / 60Hz

50 Hz

Short circuit resistance

determined through the
system

N + PE max. 60% of the outer conductor values

Icc max. ≤ 10 kA

SCPD in the supply

in accordance with installation conditions

yes / no

no

Coordination between shortcircuit protection devices inside or outside of the switchgear and control gear assembly

in accordance with installation
conditions

present / install / integrate

Item-dependent

Information of loads that
could possibly contribute to
short-circuit current

No loads are permitted that
could possibly contribute to
the short-circuit current

none

none

Type of protection against
electric shock – basic
insulation

Basic protection

Comply with local
requirements

Basic protection

Type of protection against
electric shock – earth fault
protection

Protection against indirect contact / comply with local
requirements

Automatic shutdown /
protective disconnect /
protective insulation

Item-dependent

Installation site

Execution of the manufacturer

Indoors / outdoors

Item-dependent

Protection type

Indoors min. IP 2x /
outdoors min. IP 23

IP xx (A-D)

IP 44

Protection against mechanical effects

if necessary specification of the IK code (IEC 62208)

Information on request

Resistance to UV radiation

Required for enclosures in
outdoor installation

Information on request

Resistance to corrosion

For indoor and outdoor
installation

none

Standard values!
see product for deviations

Ambient temperature limit
values

Indoors: min. -5 °C
Outdoors: min. -25 °C
High limit (both): +40 °C
max. average value (24h):
+35 °C

Outdoors:
100% at max. +25 °C
Indoors:
50% bei +40 °C

Standard values!
see product for deviations

Pollution degree

Industrial environment 3

1, 2, 3, 4

3

Altitude

≤ 2.000 m

Pay attention to the factors

≤ 2.000 m

EMC environment

A or B

A / B

B

Special operating conditions
(vibration, Ex-zone, strong
magnetic fields or
contamination)

No particular conditions

none

Not defined!

External structural shape

in accordance with
manufacturer's specifications

Open / closed / standing/ in-wall installation & on-wall
installation / console

closed

Mobile or stationary

in accordance with
manufacturer's specifications

yes / no

Item-dependent

Dimensions and masses

in accordance with
manufacturer's specifications

none

Item-dependent

Type of conductors introduced from outside

Cables

Cables / busbar trunking
systems

Cables

Materials of the conductors
introduced from the outside

Copper

Copper / aluminum

Copper

Cross-sections of the outer
conductors, PE, N & PEN
conductors

As specified in the standard

none

none

Special requirements imposed on the marking of
connections

in accordance with
manufacturer's specifications

none

Manufacturer execution

Requirements imposed on
storage & transport (type of
transport, deviating ambient
conditions, max. dimensions, packaging requirements)

Standard of the manufacturer

none

Information on request

Operability (access, activation rights, disconnect)

Easy reachability

Authorized persons, ordinary persons, etc.

Item-dependent

Requirements imposed on
accessibility for operation,
inspection, maintenance or
extension

Inspection, component
replacement, extension,
maintenance, etc. only by specialized persons (requirement)

none

Inspection, replacement, extension, maintenance, etc. only through specialized
persons

Separation of the outgoing
electric circuits

in accordance with manufacturer's specifications

Individually / in groups / all

Item-dependent

Type of interior subdivision

in accordance with
manufacturer's specifications

Form 1, 2, 3, 4

none

Rated current of the
switchgear and control gear
assembly

Manufacturers standard; in
accordance with the
application

none

Item-dependent

Rated current of the electric
circuits (InC)

Manufacturers standard; in
accordance with the
application

none

Item-dependent

Rated diversity factor
(RDF)

STANDARD specification

RDF for electric circuits/ RDF
for the entire switchgear and
control gear assembly

Item-dependent

Cross-section ratio between outer conductor and N

Ø ≤ 16 mm² = 100%
Ø > 16 mm² =   50%
(min. 16 mm²)

For currents in N to 50% of the outer conductors, otherwise a special agreement is necessary!

Outer conductor = neutral
conductor cross-section

 

 

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