BS EN 60512-9-3:2011 pdf download.Connectors for electronic equipment – Tests and measurements.
The specimen shall consist of a component with its terminations and cables according to Clause 5. a), unless otherwise specified in the detail specification. Any preconditioning given in the detail specification shall be applied.
3.2 Mounting
The specimen under test shall be mounted per the manufacturer’s instructions or as described
in the detail specification.
4 Test method
4.1 General
The specimen shall be subjected to any electrical load and mechanical operational endurance test in accordance with the requirements of the detail specification or other applicable specification.
The specimen shall be operated (engaged/separated) to make and break the current load as specified in the detail specification or other applicable specification.
In the case of specimen(s) having more than one circuit, the circuits shall be wired in parallel, with appropriate duplication of other circuit components.
A circuit diagram, typical of that which may be specified, is shown in Annex A.
4.2 Electrical load
The type of electrical load, current. d.c. or a.c. voltage and frequency shall be stated in the detail specification or other applicable specification.
An ‘equivalent circuit’ is intended to simulate a typical wiring installation including electrical load and cable.
The equivalent circuit is specified by a resistance R, a capacitance C and an inductance L. A typical circuit diagram is shown in Annex A.
In the case of specimen(s) having more than one circuit, the circuits shall be wired in parallel, with appropriate duplication of other circuit components.
During the mating cycles, the current and open-circuit voltage tolerances shall be within +5 % of the rated values specified in the detail specification.
4.3 Mechanical operation
The specimen shall be operated (engaged and separated) to make and break the current load as specified below.
Speed, duty cycles and number of operations shall be stated in the detail specification or other applicable specification. One engaging and one separating constitutes one operation.
Mechanical aids which simulate normal operation without introducing abnormal stresses may be used unless otherwise specified by the detail specification.
The engaging and separating speed shall be (50 ± 5) mm/s. if not otherwise specified in the detail specification or other applicable specification.
There will be a pause between operations of not less than 20 s if not otherwise specified, in the detail specification or other applicable specification.
4.4 Environmental test conditions
These shall be standard conditions according to IEC 60068-1. unless otherwise stated in the
detail specification.
This test may be required at low air pressure. In this case, the atmospheric conditions shall be in accordance with test M: Low air pressure of IEC 60068-2-13. The severity shall be as specified in the detail specification or other applicable specification.
4.5 Measurements
4.5.1 Initial measurements
Before testing according to 4.1 above, the following tests shall be performed:
a) visual examination (IEC 60512-1-1):
b) contact resistance — Millivolt level method (IEC 60512-2-1)
C) insulation resistance (IEC 60512-3-1)
d) voltage proof (IEC 60512-4-1);
e) sealing (IEC 60068-2-13), if applicable.
4.5.2 Measurements during the test
Contact resistance may be monitored during the test according to Contact resistance — Specified current method (IEC 60512-2-2).
4.5.3 Final measurements
a) Visual examination (IEC 60512-1-1).
b) Contact resistance — Millivolt level method (IEC 60512-2-1).
c) Insulation resistance (IEC 605 12-3-1).
The values and requirements shall be in accordance with those details referenced in Clause 5
below.
5. Details to be specified
When this test is required by the detail specification, the following details shall be given:
a) Preparation of the specimen, type size and length of wire (cable) to be used.
b) Any mounting of the specimen.
c) Type of electrical load(s) e.g. resistance, capacitance and inductance.
d) Voltage, a.c. or d.c. value, waveform type e.g. harmonic content and crest factor,impedance etc., as appropriate.
e) Electrical current value.
f) Atmospheric pressure, if other than standard;
g) Number and duty cycle of engaging and separating cycles.
h) Requirements for final measurements and/or allowable change from initial measurements.
i) Any mechanical aids.
j) If any contact lubricant shall be used and, if so, its specification.
k) If low pressure testing is required.
I) Any deviation from the standard test method.BS EN 60512-9-3 pdf download.