EP2S Datasheet, PDF (7/8 Pages) NEC – AUTOMOTIVE RELAYS LOW SOUND PRESSURE

EP2S / EP1S SERIES
TECHNICAL DATA
Coil Temperature (EP2S-3L1)
150
100
Vcoil = 12 V, IC = 25 A
Vcoil = 7.5 V, IC = 25 A
100
50
50
Vcoil = 12 V, IC = 0 A
Vcoil = 7.5 V, IC = 0 A
IC = 0A
0
10
20
30
Energized Time (minutes)
0
0.5
1.0
1.5
2.0
Applied Power (W)
Operate Time (EP2S-3L1)
Release time (EP2S-3L1)
10
10
With Diode
Mean
5
5
Mean
0
0.5
1.0
1.5
Applied Power (W)
Without Diode
0
0.5
1.0
1.5
Applied Power (W)
Distribution of Sound Pressure Level (for reference)
50
50
EP2S – 3L1
n = 80
40
40
EP2 – 3L1
n = 80
30
30
20
20
Release
Operate
10
10
0
40
50
60
Sound Pressure Level (dBA)
70
0 ₄₀
50
60
70
Sound Pressure Level (dBA)
Measuring Condition
Measuring Equipment : Precision Sound Meter
Detector-indicator Characteristic : Fast (F) specified in IEC 651
Relay Drive : 12 Vdc (Diode clamped)
Distance between Microphone and Sample : 50 mm
Background Noise : less than 35 dB (A)
(A) : Frequency Weighting Characteristic specified in IEC 651
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