65
UTS Series
64
UTS Series
IEC 61984
The norm is dedicated to connectors with rated voltage above 50V and up to 1000V and rated currents up to 125A per contact. But
depending of your application connectors should be compliant with another standard. This has to be double checked with the customer.
There are lot of constructional requirements and performances specied in that standard. Most of them are illustrated in greater details
hereafter.
Provisions for earthing:
The UTS connector is intended to be used on Class II systems. Even if the purpose of our connector is not to interrupt current, we often
see a need to add a protective earth contact. Then this one shall be a “First mate, last break” style. Critically, among all of the normal
assumptions we make in designing a connector, this contact has to be considered as a live part and must be protected against electric shock
by double or reinforced insulation.
IP Code:
IP is a coding system dened by the IEC 60529 to indicate the
degrees of protection provided by an enclosure. The aim of this is to
give information regarding the accessibility of live parts against ingress
of water and other foreign bodies.
1st digit Degree of protection 2nd digit Degree of protection
0No protection against accidental contact.
No protection against solid foreign bodies.
0No protection against water.
1Protection against contacts with any large area by hand and
against large solid foreign bodies with a diameter bigger than
50 mm.
1Drip-proof.
Protection against vertical water drips.
2Protection against contacts with the ngers.
Protection against solid foreign bodies with a diameter bigger
than 12 mm.
2Drip-proof.
Protection against water drips up to a 15° angle.
3Protection against tools, wires or similar objects with a diame-
ter bigger than 2.5 mm.
Protection against small solid bodies with a diameter bigger
than 2.5 mm.
3Spray-proof.
Protection against diagonal water drips up to a 60° angle.
4As 3 however diameter is bigger than 1 mm. 4Splash-proof.
Protection against splashed water from all directions.
5Full protection against contacts. Protection against interior
injurious dust deposits.
5Hose-proof.
Protection against water (out of a nozzle) from all directions.
6Total protection against contacts. Protection against
penetration of dust.
6Protection against temporary ooding.
7Protection against temporary immersions.
8Protection against water pressure.
Pressure to be specied by supplier.
9K High pressure hose-proof.
Protection against high pressure water (out of a nozzle) from
all directions.
IP 6 8
First digit
(foreign bodies
protection)
Second digit
(water
protection)
Code letters
(international
Protection)
UTS offers high sealing
performance IP68 / 69K…
Even in dynamic situations.
In addition to the IEC 60529 we conjointly use the DIN 40050 part 9
which are dedicated to road vehicles. The main differences are:
• First digit: 5 replaced by 5K, 6 by 6K. In the DIN the tested
equipment is not depressurized as it is in the IEC.
• Second digit: 5K and 6K has been added and are equivalent
respectively to 5 and 6 but with higher pressure.
9K which represents the High pressure cleaning.
IEC 61984 ed.2.0 “Copyright © 2008 IEC Geneva, Switzerland.www.iec.ch"
IEC 60664-1 ed.2.0 “Copyright © 2007 IEC Geneva, Switzerland.www.iec.ch”
Technical information
IEC 61984
Overvoltage
Pollution degree
UTS connectors are qualied to be used on systems rated at Overvoltage category III
Per the IEC 60664-1 (formely VDE 0110) each category is linked to the end application and where the device will be implemented:
• Category IV (primary overcurrent protection equipment):
Origin of the installation
• Category III (Any xed installation with a permanent connection)
Fixed installation and equipment and for cases where the reliability and the availability is subject to special requirements
• Category II (Domestic applicances):
Energy consuming equipment to be supplied from the xed installation
• Category I (Protected electronic circuit):
For connection to circuit in which measures are taken to limit transient overvoltage.
Per the IEC 60664-1 (formerly VDE 0110) the environment affects the performance of the insulation. Particles can build a bridge between
two metal parts. As a rule dust mixed with water can be conductive and more generally speaking metal dust is conductive. Finally, the
standard denes 4 levels of pollution:
• Degree 1 (Air conditioned dry room):
No pollution or only dry, non conductive pollution occurs. The pollution has no inuence.
• Degree 2 (Personal computer in a residential area):
Only non conductive pollution occurs except that occasionally a temporary conductivity caused by condensation is to be
expected.
• Degree 3 (Machine tools):
Conductive pollution occurs or dry non-conductive pollution occurs which becomes conductive due to condensation which is to
be expected.
• Degree 4 (Equipments on roof, locomotives):
Continuous conductivity occurs due to conductive dust, rain or other wet conditions.
Finally, the harsher the environment is, the longer clearance and creepage distances should be. Nonetheless, according the IEC 61984,
enclosure rated at IP54 or higher can be dimensioned for a lower pollution degree. This applies to mated connectors disengaged for test
and maintenance.
Marking
The marking should give enough details to the user to know what the main characteristics are and without going deep in technical
documentation. Below examples identify the suitability of the connector:
• Example 1:
Marking of a connector with rated current 16A, rated voltage 400V, rated impulse voltage 6kV and pollution degree 3, 2 and 1 for
use in any system, preferably unearthed or delta-earthed systems:
16A 400V 6kV 3
• Example 2:
Marking of a connector with rated current 16A, rated insulation voltages line-to-earth 250V, line-to-line 400V, rated impulse
voltage 4kV and pollution degree 3, 2 and 1 for use in earthed systems:
16A 250V 400V 4kV 3
16A 400V 6kV 3
16A 250V 400V 4kV 3