EGN.2F.319.XLM LEMO, EGN.2F.319.XLM Datasheet - Page 41

• Manufacturer Part Number: EGN.2F.319.XLM
• Description: Circular Push Pull Connectors 19P RECEPT FEMALE CRIMP CONTACTS
• Manufacturer: LEMO
• Series: F Seriesr

Specifications of EGN.2F.319.XLM

• Product Type: Connectors
• Contact Style: Socket (Female)
• Shell Style: Receptacle
• Number Of Contacts: 19
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Thickness comparison between the outside and the inside of female contacts
Crimp contacts
The square form crimp method is used (MIL-C-22520F,
class I, type 2) photo 1 for unipole contacts.
For multipole contacts the standard four identer crimp
method is used, (MIL-C-22520F, class I, type 1), photo 2.
The crimp method requires a controlled compression to
obtain a symmetrical deformation of the conductor strand
and of the contact material. The radial hole in the side of
the contact makes it possible to check whether the
conductor is correctly positioned within the contact. A
good crimping is characterized by only slightly reduced
conductor section and practically no gap.
For optimum crimping of bronze or brass contacts they are
annealed to relieve internal stress and reduce material
hardening during the crimping process.
Only the crimping zone is annealed with the help of an
induction heating machine designed by the LEMO
Research and Development Department (see photo 3).
Test voltage
Test voltage (Ue):
(measured according to the IEC 60512-2 test 4a standard)
It corresponds to 75% of the mean breakdown voltage.
Test voltage is applied at 500 V/s and the test duration is
1 minute.
This test has been carried out with a mated plug and soc-
ket, with power supply only on the plug end.
Operating voltage (Us):
It is proposed according to the following ratio: Us =
Caution:
For a number of applications, safety requirements
for electrical appliances are more severe with regard
to operating voltage.
In such cases operating voltage is defined according
to creepage distance and air clearance) between live
parts.
Please consult us for the choice of a connector
by indicating the safety standard to be met by the
product.
www.lemo.com
2.5
2.5
P
P
Ue
3
Note: P = inspection point
Advantages of crimping
– practical, quick contact fixing outside the insulator
– possible use at high temperature
– no risk of heating the insulator during the conductor-
– high tensile strength
Crimp contacts are available in standard version (form 1)
for mounting maximum size conductors.
For some dimensions, these crimp contacts can be pro-
duced with reduced crimp barrels (form 2) for mounting
reduced size conductors.
Voltage values are given in the table on insulator types for
each series.
They correspond with values measured at sea level.
They are adapted to all applications up to an altitude of
2000 m.
In case a device is used at a higher altitude, air clearance
between live parts has to be multiplied by the following
coefficients.
It means also that test voltage has to be divided by this
coefficient.
1
Contact
altitude (m)
(mm)
contact fixing
ø A
0.5
0.7
0.9
1.3
2000
3000
4000
5000
male
(µm)
1.0
1.0
1.0
1.0
coefficient
Gold thickness
1.00
1.14
1.29
1.48
outside
2
(µm)
1.5
1.5
1.5
1.5
female
inside
(%)
65
70
75
75
3
®
39
®