DCR contents are modified as follows in order to incorporate the latest comments and agreements made by the Manufacturers (LEACH, REL STPI) and CNES.
The DCR attachment is changed to be 3602/004 draft 3D which includes all the changes in the final version of this DCR.
Note: This DCR now also implements the use of alternate publishing software for this specification (was: GlobalView; is now: WORD2010).
Item 4) Table 1(a), Figure 2
Delete item and replace with the following:
The description of package & terminals for all Variants is amended as follows (to be consistent with MIL terminology):
• “Horizontal Flange Mount” changed to “Raised Vertical Flange Mount”
• “Vertical Flange Mount” changed to “Horizontal Flange Mount”
• “Straight Terminals” changed to “Solder Pin Terminals”
• “Hook Terminals” changed to “Solder Hook Terminals”
Item 6) Figure 2(c), 2(d), 2(f)
Delete item and replace with the following:
Dimensions as follows are amended (as requested by Leach) (see attachment for details)(see also DCR369)
Variants 04, 14: P Q
Variants 06, 16: P Q
Variants 09, 19: N2 P Q
C D are new dimensions in figures 2c, 2d, 2f
B is a new dimensions in figure 2f
N2 is deleted in figure 2f
Dia.G clarified to be the inner diameter in figures 2d, 2f
Item 13) Para 4.7.1 & Table 4
Delete item and replace with the following:
Miss Test is renamed ‘Run-in’ and Table 4 is used to specify Parameter Drift Values.
Miss Test Contact Resistance limit is deleted from Table 4 and replaced by Latch Voltage & Reset Voltage drift values.
Drift value limits are not specified at this time. Drift values are to be recorded for information purposes only in order to amass data so that suitable drift value limits can be specified at a later date (in a later revision).
Item 15) Delete item and replace with the following:
For Latch Voltage & Reset Voltage delete all minimum limits. Tests are performed at both high and low (-65C) temperatures.
Note 2 is deleted.
For Latch & Reset voltage, the maximum limit for UR=28V is amended to be 18V (was 19.8V).
Item 22) Table 6
Add the following note to this item and delete reference to +/-15%:
Note - Drift value limits are not specified in the table at this time. Drift values are to be recorded for information purposes only in order to amass data so that suitable drift value limits can be specified at a later date (in a later revision). Note 1 is added to clarify this position.
Item 24) Table 6
Delete item and replace with the following:
The following Contact Voltage Drop limits are amended or clarified:
• Overload: 2.8V maximum during monitoring (clarification only; no actual change); 0.015 x ITEST (= 225mV) (was 175mV) maximum during final measurements.
• Intermediate Current: 175mV, 30mV, 18mV, 6mV (as applicable to the 4 Poles per the generic spec) during monitoring (clarification only; no actual change); 0.015 x ITEST (= 225mV) (was 175mV) maximum during final measurements.
• Operating Life Resistive (= Resistive Life): 2.8V maximum during monitoring (clarification only; no actual change); 0.015 x ITEST (= 225mV) (was 175mV) maximum during final measurements.
• Inductive Life: 2.8V maximum during monitoring (clarification only; no actual change); 0.015 x ITEST (= 225mV) (was 175mV) maximum during final measurements.
• Mechanical Life: 0.015 x ITEST (= 225mV) (was 175mV) maximum during final measurements.
Add New Item 27) Para 4.2.4
Add new deviation to Chart F4 Deviations from Qualification and Periodic Tests High Level Mechanical Shock as follows: The mechanical shock test condition peak value shall be 500g (as requested by REL STPI & agreed by CNES/ESA)
Add New Item 28) Table 2
Latch Voltage and Reset Voltage minimum values is amended to be 8V (was 9.1V) (as requested by Leach).
Add New Item 29) Table 2 & Table 3
Contact Voltage Drop test current is amended (= 100mA minimum to 15A maximum, to be consistent with the generic spec). The VD max limit is specified as 0.01 x ITEST (based on 10mOhm value from Table 1(b) for contact resistance and the test current of 100mA to 15A)(as requested by Leach).
Add New Item 30) Appendix A for Leach International Europe
Add Appendix to detail the following deviations:
• Deviation to Materials & Finishes – Terminals: To specify a different terminal material for Leach relays: Iron-Cobolt (was type H); plus to allow a modification to finish type 3 such that: tin-lead plating shall have a composition of 85 to 95% tin (remainder lead) (was 30 to 70% tin (remainder lead)) (as requested by Leach).
• Deviations to Chart F4 High Level Sine Vibration & High Level Mechanical Shock tests which shall be not applicable for Leach (as requested by Leach due to the increased level in the Generic spec not yet having been fully assessed).
• Deviations to Chart F4: Coil Life subgroup test sequence (under Endurance Subgroup 1): Coil Life and the subsequent tests shall only be performed for Qualification. They are not required for Periodic Testing except in the case of any significant change to the design (as confirmed by Leach)
Add New Item 31) Appendix B for REL STPI
Add Appendix to detail the following deviations:
• Deviations to Chart F4: Coil Life subgroup test sequence (under Endurance Subgroup 1): Coil Life and the subsequent tests shall only be performed for Qualification. They are not required for Periodic Testing except in the case of any significant change to the design (as requested by REL STPI)
In the Justification section:
Item d) Delete item and replace with the following:
d) Implement drift measurement for Latch Voltage & Reset Voltage during Screening (over Run-in) and during Qualification and Periodic Testing on specific tests (see items 13 & 22 above). Limits have not been specified at this time due to lack of applicable performance data. Measurements will now be recorded for information purposes so that suitable drift value limits can be specified at a later date in a further revision of this specification.
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