DCR contents are modified as follows in order to incorporate the latest comments and agreements made by the Manufacturer (LEACH) and CNES.
The DCR attachment is changed to be 3601/003 draft 5C 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 Manufacturer:
- Leach International Europe/F (is willing to support procurement of all variants and is ESCC qualified for variants 01 to 08).
Item 3) 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):
• “Plain Case” changed to “Plain Case (No Mount)”
• “Horizontal Shoulder Brackets” changed to “Raised Vertical Flange Mount”
• “Vertical Shoulder Brackets” changed to “Horizontal Flange Mount”
• “Plug-in Terminals” changed to “Solder Pin Terminals”
• “Hook-end Terminals” changed to “Solder Hook Terminals”
Item 5) Deleted
Item 6) Deleted
Item 9) Para 4.4.1
Delete item and replace with the following:
Case details are amended (to be consistent with other ESCC Relay Detail Specs); 2nd sentence, “electro-deposited tin shall not be used”, is deleted (as it is considered redundant). 3rd sentence is amended to read ”Tin lead alloy plating may be used”.
Item 11) Deleted
Item 12) 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 14) Table 2 & Table 3
Delete item and replace with the following:
Contact Voltage Drop test current is specified (=100mA maximum to be consistent with the generic spec).
The VD max limit is specified as 0.05 x ITEST (based on 50mOhm value from Table 1(b) for contact resistance and the test current of 100mA maximum).
Item 15) Deleted
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 25) Table 6
Delete item and replace with the following:
The following Contact Voltage Drop limits are amended:
• Overload: 1.4V maximum during monitoring (clarification only; no actual change); 0.1 x ITEST (= 10mV) (was 20mV) maximum during final measurements.
• Intermediate Current: 300mV maximum during monitoring (clarification only; no actual change); 0.1 x ITEST (= 10mV) (was 20mV per DCR 157) maximum during final measurements.
• Operating Life Resistive (= Resistive Life): 2.8V maximum during monitoring (clarification only; no actual change); 0.1 x ITEST (= 10mV) (was 20mV) maximum during final measurements.
• Operating Life Low Level Load and Mechanical Life (= Low Level Life): 0.1 x ITEST (= 10mV) maximum during final measurements (clarification only; no actual change).
Add New Item 27) Table 1(a), Figures 2(g), 2(h), 2(j)
Variants 07, 08, 10 are deleted (as requested by Leach)
Add New Item 28) Table 1(b), Table 2, Table 3, Para 4.5.4
Delete the 6V option for coil voltage (as requested by Leach; see also DCR424).
Add New Item 29) Figure 2
Dimensions as follows are amended (as requested by Leach) (see attachment for details):
Variant 01: D E
Variant 02: D E H K
Variant 03: D M
Variant 04: D E
Variant 05: D
Variant 06: D H K
Variant 09: D
Dia.G clarified to be the inner diameter in Figures 2c, 2e, 2f.
C is a new dimension in figures 2b, 2f
Add New Item 30) Para 4.4.2
Lead material and finish types F4 and D3, D4 are added as equivalent options to current type F3 (as requested by Leach) (as requested by Leach) (see also Item 33 below)
Add New Item 31) Table 2
For Pick-up voltage, only the maximum limits apply (minimum limits are deleted)(as requested by Leach; to be consistent with other similar ESCC specs).
Add New Item 32) Table 3
For Pick-up voltage, the maximum limits are amended to be 19.8V (for UR=26.5V) & 9.9V (for UR=12V)(was 18V & 8.4V respectively)
For Drop-out voltage, the maximum limits are amended to be 14V (for UR=26.5V) & 6.5V (for UR=12V)(was not specified previously)
(as requested by Leach)
Add New Item 33) Appendix A for Leach International Europe
Add Appendix to detail the following deviations:
• Deviation to Materials & Finishes – Terminals: 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 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 requested by Leach)
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 12 & 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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