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 3601/007 draft 4E 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).
Amend note on Manufacturer support to read as follows:
Note: known support for active procurement against this specification includes the following Manufacturers:
- REL-STPI/F (is willing to support procurement of variants 03 04 06 and is ESCC qualified for variants 03 04 06).
- STPI/F (is willing to support procurement of all variants and is ESCC qualified for all variants).
- Leach International Europe/F (is willing to support procurement of all variants and is ESCC qualified for variants 03 04 06).
Item 3) Table 1(a), Figure 2
Variant 05 is reinstated (in spite of DCR291; at the specific request of Leach/F who states that such a design is procured by their customers for space applications, and therefore dispute the case put in DCR291 that such a design is a bad solution for mounting)
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”
• “Plug-in Terminals” changed to “Solder Pin Terminals”
• “Solderable Hook-end Terminals” changed to “Solder Hook Terminals”
• Polarizing pin is added to the description for Variants 03 & 05
Item 6) Figure 2(c) 2(d) 2(e) 2(f)
Delete item and replace with the following:
Dimensions as follows are amended (as requested by Leach) (see attachment for details)(see also DCRs 254, 369, 479, 624; however this DCR takes precedence):
Variant 03: A B1 C D D1 E F G H M P Q
Variant 04: A C D E F G H M P Q
Variant 05: A B1 C D D1 E F G H M P Q
Variant 06: A C D E F G H M P Q
Dimension B1 plus the gasket are deleted for figure 2c, 2e
Dia.G clarified to be the inner diameter for figures 2d, 2f
Polarizing pin is identified in the figures 2c, 2e
Item 7) Figure 2(c), 2(e)
Add Variant 05 (fig 2(e)) to this item.
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 Pick-up Voltage & Drop-out 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) Table 2 & Table 3
Delete item and replace with the following:
Contact Voltage Drop test current is specified (= 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).
Item 16) Deleted from this DCR
Item 22) 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) maximum during final measurements (clarification only; no actual change).
• 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) maximum during final measurements (clarification only; no actual change).
• Inductive Life: 2.8V maximum during monitoring (clarification only; no actual change); 0.015 x ITEST (= 225mV) maximum during final measurements (clarification only; no actual change).
• Mechanical Life: 0.015 x ITEST (= 225mV)(was 175mV) maximum during final measurements.
Item 23) Table 6
Delete the new test “Random Vibration” (as it does not apply to relays >= 5A)
Item 24) 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.
Delete the new test “Random Vibration” (as it does not apply to relays >= 5A)
Add New Item 25) Table 3
For Pick-up voltage, the maximum limit for UR=12V is amended to be 9.9V (was 8.5V respectively) (as requested by Leach)
Add New Item 26) Table 6
Amend the Voltage Proof minimum Voltage limit to be 1000V (was 1250V per Table 2) for the following tests: Overload, Intermediate Current, Operating Life Resistive (= Resistive Life) & Inductive Life.
Add New Item 27) 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 28) 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 Pick-up Voltage & Drop-out Voltage during Screening (over Run-in) and during Qualification and Periodic Testing on specific tests (see items 13 & 24 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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