DIN 56905

from Wikipedia, the free encyclopedia
Logo of the German Institute for Standardization DIN 56905
Area Electrical engineering
title Event technology, stage lighting - two-pole stage connectors 63 A, ~ 250 V, 50/60 Hz
Brief description: Stage extension or stage suspension plug from the Eberl system
Latest edition 2005-08
ISO
Eberl connector, type M
Identical connectors on both sides of an extension cable
Eberl connector, type A

The DIN 56905 defines a reverse polarity protected two-pole connector system with earthing contact for the transmission of electric current , also known as Eberl connector is known and by the VDE since 1977 for 250  V and 63  A is allowed. The assignment is determined by DIN VDE 0100 .

The formerly valid DIN 56906 for two-pole special extension sockets with protective contact and cover cap was withdrawn in August 2005 and integrated into DIN 56905: 2005-08.

distribution

The Eberl plug-in system was developed for use on the stage and mostly only used in theaters. Due to the high permitted currents, the connections are suitable for single-phase AC consumers (e.g. stage spotlights) with a connection value of more than 16 A. At the time of approval, Eberl filled a gap because no comparable plug connections were available. Only since the introduction of the new sockets or plugs according to the CEE standard can these connectors be replaced by the blue ones according to CEE 16 (1PNE) or CEE 32 (1PNE). Since the conversion is not always possible 1: 1 - among other things because of the much larger space requirements of the CEE sockets - other plug families, such as PowerCon from Neutrik , are now being considered.

Specialty

As the only connector with European distribution, the Eberl system is asymmetrically hermaphroditic, so plugs and sockets are identical. Nevertheless, the user is protected from electric shock through direct contact, since one of the two poles is designed as a socket. Pay particular attention to the assignment when making extension cables: The poles are crossed, i.e. the pin on one side is connected to the socket on the other side and vice versa. As a control, when an extension cable is plugged together to form a ring, it can be measured whether there is no continuity between the two poles. The protective conductor must not be crossed and is connected to the housing and the two pole covers on both sides.

Designs

There are two different designs, each made of plastic or die-cast aluminum.

Mobile stage connector, form M

This form, standardized in accordance with DIN 56905, Section 3.1, is used as a plug or coupling on the cable. This type used to be standardized in DIN 56906 and known as the HST stage hanging plug .

Stage attachment plug-in device form A

This type, standardized according to DIN 56905, Section 3.2, serves as a socket . It is suitable for cultivation and is usually attached to the wall or in a floor displacement flap. In addition, this design can be used as a connector on the headlight. This design used to be known as the AST stage connector .

criticism

  • Causes of the accident:
    • Incorrectly assigned extension cables mean that the live conductor can be touched.
    • If two cables that are connected to voltage, i.e. two power sources, are plugged together, there are short circuits and, depending on the voltage and environment, short arcs .
  • Cross-section: Although the plug is approved for up to 63 A, conductors with the corresponding cross-section do not fit under the contacts. Cables suitable for 10  kW (around 45 A) are difficult.

Web links