SERIES KDA
ENGINEERING DATA SHEET
RELAY - NONLATCH
3 PST/NO +AUX, 25 AMP
All welded construction
Contact arrangement
3 PST configuration with 1 PDT, 2
AMP auxiliary contacts in one inch
cube
MIL-PRF-6106
Designed to the
performance standards of
PRINCIPLE TECHNICAL CHARACTERISTICS
Contacts rated at
Weight
Dimensions
28 Vdc and 115/200 Vac, 400 Hz, 3Ø
0.188lb max
1.01in x 1.01in x 1.00in
APPLICATION NOTES:
102
007
APPLICABLE SOCKET:
SO-1061-8916
Hermetically sealed, corrosion resistant metal can.
Detail specifications and ordering data appear on the following
pages.
Contact factory for information on MIL-qualified part numbers.
CONTACT ELECTRICAL CHARACTERISTICS
Contact rating
per pole and load
type [1]
Resistive [2]
Inductive [3]
Motor
Lamp
Overload
Rupture
Load current in Amp
@28 Vdc
25
12
10
5
50
60
@115 Vac
400 Hz
25
15
10
5
80
100
@115/200 Vac
400 Hz, 3Ø
25
15
10
5
80
100
Resistive
2 Amp
@115/200 Vac
60 Hz, 3Ø [9]
2.5
2.5
2
1
N/A
N/A
Inductive
1 Amp
@230/400 Vac
400 Hz [11]
5
5
2
2
N/A
N/A
Lamp
0.5 Amp
Contact rating of auxiliary contacts
at 28 Vdc or 115 Vac 400 Hz
Featuring
LEACH
©
power and control solutions
www.esterline.com
AMERICAS
6900 Orangethorpe Ave.
P.O. Box 5032
Buena Park, CA 90622
.
.
Tel: (01) 714-736-7599
Fax: (01) 714-670-1145
EUROPE
2 Rue Goethe
57430 Sarralbe
France
.
.
Tel: (33) 3 87 97 31 01
Fax: (33) 3 87 97 96 86
ASIA
Units 602-603 6/F Lakeside 1
No.8 Science Park West Avenue
Phase Two, Hong Kong Science Park
Pak Shek Kok, Tai Po, N.T.
Hong Kong
Tel: (852) 2 191 3830
Fax: (852) 2 389 5803
Data sheets are for initial product selection and comparison. Contact Esterline Power Systems prior to choosing a component.
Date of issue: 07/10
- 167 -
Page 1 of 4
COIL CHARACTERISTICS (Vac)
Vac 400 Hz
CODE
Nominal operating voltage
Maximum operating voltage
Maximum pickup voltage
- Cold coil at +125° C
- During high temp test at +125° C
- During continuous current test at +125° C
Maximum drop-out voltage
Coil current maximum milliAmperes at +25° C
22
24.4
25.6
10
225
90
95.4
103.5
30
40
23
24.6
25.9
10
120
95
100
105
30
28
E
28
30
F
115
122
Vac 50-400 Hz
J
28
30
K
115
122
SERIES KDA
Vac 400 Hz
T [11]
230
248
180
185
195
60
22
GENERAL CHARACTERISTICS
Temperature range
Minimum operating cycles (life) at rated load
Minimum operating cycles (life) at 25% rated load
Dielectric strength at sea level
- All circuits to ground and circuit to circuit
- Coil to ground and coil auxiliary contact gap
Dielectric strength at altitude 80,000 ft
Insulation resistance
- Initial (500 Vdc)
- After environmental tests (500 Vdc)
Sinusoidal vibration (A, D and E mounting)
Sinusoidal vibration (J mounting)
Random vibration
- Applicable specification
- Method
- Test condition - A, D and E mounting
- Test condition - J mounting
- Duration
Shock (A, D, E and W mounting)
Shock (J mounting)
Maximum contact opening time under vibration and shock
Operate time at nominal voltage@25°C
Release time at nominal voltage@25°C
Contact make bounce at nominal voltage
- power contacts@25°C
- auxiliary contacts@25°C
Contact release break bounce at nominal voltage
Weight maximum
1 ms max
4 ms max
0.1 ms max [8]
0.188lb
MIL-STD-202
214
1G (0.4G
2
/Hz, 50 to 2000 Hz)
1E (0.2G
2
/Hz, 50 to 2000 Hz)
15 minutes each plane
200G / 6 ms
100G / 6 ms
10 µs
20 ms max
50 ms max
100 M
Ω
min
50 M
Ω
min
0.12DA / 10 to 70 Hz
30G / 70 to 3000 Hz
0.12DA / 10 to 57 Hz
20G /57 to 3000 Hz
1250 Vrms
1000 Vrms [4]
500 Vrms [5]
-70°C to +125°C
50,000 [3]
200,000
Date of issue: 07/10
- 168 -
Page 2 of 4
NOTES
[1] Standard Intermediate current test applicable.
[2] For full rated load, max. temp. and altitude use no. 12 wire or larger.
Relays to be mounted to limit mounting bracket temp. to 135° C.
[3] DC inductive load 10,000 cycles. AC inductive load 20,000 cycles.
[4] Dielectric of auxiliary contact gap after life tests: 750 Vrms.
[5] 500 Vrms with silicone gasket compressed, 350 Vrms all other conditions.
6. Reference military specification: MIL-PRF-6106, and MIL-PRF-6106/13.
7. Special models available: dry circuit, established reliability testing, etc.
[8] Applicable to power contacts only.
[9] 60 Hz load life, 10,000 cycles.
[10] Time current relay characteristics per MIL-PRF-6106.
[11] Temperature range:
Non-operating -62°C to +95°C
Operating -54°C to +71°C
SERIES KDA
NUMBERING SYSTEM
KDA- A
4
F
Basic series designation__________________________|
|
|
|
1-Mounting Style (A,D,E,J)____________________________|
|
|
2-Terminal Types (1,2,4) [1]______________________________|
|
3-Coil Voltage see coil characteristics (E,F,J,K or T)________|
MOUNTING STYLES
.156
.040
1.015
1.000
1.000
1.396
FULL R
6 PLACES
1.015
1.015 .937
.150
3 PLACES
.625
1.446
1.718 MAX
.312
1.015
MOUNTING STYLE A
MOUNTING STYLE D
(THIS MOUNT WILL NOT
MATE WITH LEACH SOCKET)
1.396
FULL R
8 PLACES
.156
1.000
1.015 .937
.625
.150
4 PLACES
.040
1.015
1.446
1.015
1.396
FULL R
8 PLACES
1.015
.937
.625
.040
1.015
.150 TYP
1.446
1.718 MAX
1.718 MAX
MOUNTING STYLE E
MOUNTING STYLE J
Date of issue:
07/10
- 169 -
Page 3 of 4
TERMINAL TYPES
SERIES KDA
STANDARD TOLERANCE: .XX ±.03; .XXX ±.010
Date of issue: 07/10
- 170 -
Page 4 of 4
Application notes
RELAYS AND TEMPERATURE VARIATIONS
N°102
Most relay parameters are specified as maximum values over the rated temperature range of the specific relay. Users often
find that key parameters differ significantly at ambient temperature (20-25°C) and sometimes fall into the trap of specifying
their system around these ambient parameters. Additionally the actual temperature experienced by the relay can be far in
excess of existing ambient temperatures due to the heat generated by the coil current and the contact load. Figure 1 is the
summary of temperature effects on relay electrical characteristics.
Temperature
Increase
Decrease
Resistance
UP
DOWN
Current
DOWN
UP
Operating
Voltage
UP
DOWN
Release
Voltage
UP
DOWN
Operate Time
UP
DOWN
Release Time
UP
DOWN
Fig. 1
The following formulas are sometimes useful in calculating the effects shown above.
1. Change in coil resistance due to change of ambient temperature can be calculated by the following formula.
R = R
20
[1 + .0039 (T-20)]
Where: R = Coil resistance at given temperature
R
20
= Coil resistance at 20°C
T = °C Ambient temperature
"Rule of Thumb" : For each 10°C change of temperature, coil resistance will change approximately 4%.
2. High and low temperature pick up voltage:
E
2
= E
1
K
2,
Where: E
2
= Pick Up Voltage at T
2
temperature
E
1
= Pick Up Voltage at 20°C
K
2
= Coefficient of correction found on the graph in Fig. 2 at T
2
Date of issue: 6/00
- 15 -
Page 1 of 2
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