NR-HD-5V Datasheet, PDF (5/8 Pages) Nais(Matsushita Electric Works) – LONG LIFE RELAY

NR
11.-(3) Electrical life
Tested Sample: NR-SD-12V, 10 pcs.
Load: 54 mA 12 V DC inductive load
with diode protection
(4 relay coils in parallel of NR-SD-12V)
Frequency: 50 cps
1,000
100
Max.
Min.
1,000
10,000
No. of operations, ×10⁴
12. Thermal electro motive force
Tested Sample: NR-SD-12V, 5 pcs.
Coil applied V: 12 V DC
Ambient atmosphere: 25°C 77°F, 60% RH
200
100
2 4 6 8 10 12 14 16
Hour
11.-(4)Electrical life
(327 mA 24 V DC relay coil load)
Tested sample: NR-SD-24V, 5 pcs.
Condition: HP2-DC24×6 pcs. in parallel,
diode protector provided
NR relay contact
16
Pick-up voltage
12
Max.
x
Min.
8
Drop-out voltage
4
Max.
x
Min.
0
100
200
300
No. of operations, ×10⁴
24 V DC
L1 L2 L3 L4 L5 L6
L1~L6: HP2-DC24V × 6 pcs. in parallel
Diode protector provided
100
80
60
Max.
40
x
20
Min.
100
200
300
No. of operations, ×10⁴
13. High temperature test
TEST CONDITION
Tested Sample: NR-SD-24V, 30 pcs.
Ambient temperature: 80°C 176°F
Humidity: less than 50% R.H.
Exposure time: 2,000 hours with relays deenergized.
TEST RESULT
Contact resistance: Fig. 1
All samples were measured less than
100 mΩ in contact resistance throughout this test.
N.C.
N.O.
14. Influence of adjacent mounting mm inch
Distance
Type
Magnetically
shielded type
Sealed type
0
(0)
±5%
—
5 10 15
(.197) (.394) (.591)
±1% 0
0
±10% ±6% ±2%
15. Resistive load test
TEST CONDITION
Tested Sample: NR-SD-24V, 10 pcs.
Load: 1 A 20 V DC Resistive
Cycle rate: 1.4 cps.
Contact resistance in life test
500
N.C.
N.O.
100
80
60
40
20
10
Max.
Max.
Min.
100
1,000 2,000
Exposure time, hr
100
50
20
1
Max.
Max.
Mean value
of N.O.
Mean value
of N.C.
Min.
Min.
2
5
10 15
No. of operations, ×10⁶
APPLICATION HINTS
Contact protection circuit
When using NR relays in inductive load circuits, a contact protection circuit is recommended.
Examples:
CR
CR
Diode
S Relay contact
rc
L
L : Inductive load
S
r
L
c
S
L
1. r = more than 20 to 30 ohms
2. In an AC circuit impedance of L is to be
somewhat smaller than impedance of r
and c.
Can be used for both AC and DC circuits.
Use 500 to 1000 ohms for r and 0.1 µF to
0.2 µF 200 V for c in a general 12 to 24 V
load circuit.
For DC circuits only.
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