DATA SHEE T
AUTOMOTIVE RELAYS
EP2S/EP1S SERIES
LOW SOUND PRESSURE
DESCRIPTION
The NEC EP2S / EP1S series are PC-board mount type automotive relays suitable for various motor controls
and other applications that require a high level of quality and performance.
The sound pressure level of EP2S / EP1S series is 57 dBA nominal when the relay operates, and 49 dBA
nominal when the relay releases.
FEATURES
™
Less sound pressure (–10 dB at “operate” and –3 dB at “release” compared with EP2 / EP1)
™
For motor and solenoid reversible control
™
High performance and productivity by unique structure
™
Flux tight housing
APPLICATION
™
Power window control
™
Electrical door lock
™
Wiper system
EP2S SERIES
EP1S SERIES
Document No. ER0131EJ1V0DS00
Date Published April 1996 M
Printed in Japan
©
1996
EP2S / EP1S SERIES
SPECIFICATIONS
Items
Contact Form
Contact Material
Contact Resistance
Contact Switching Voltage
Contact Switching Current
EP2S
1 form C×2 (H bridge type and separate type) 1 form C
Silver oxide complex alloy
50 mΩ max. (measured at 7 A) initial
16 Vdc max.
25 A max.
20 A / regular type
(2 minutes max. 12 Vdc at 85˚C)
25 A / high carrying current type
(2 minutes max. 12 Vdc at 85˚C)
25 A / regular type
(2 minutes max. 12 Vdc at 85˚C)
30 A / high carrying current type
(2 minutes max. 12 Vdc at 85˚C)
EP1S
at 25 ˚C (77 ˚F)
Contact Carrying Current
Operate Time
Release Time
Normal Operate Power
Insulation Resistance
Breakdown Voltage
Shock Resistance
Vibration Resistance
Ambient Temperature
Coil Temperature Rise
Mechanical
G
Electrical
Approx. 5 ms (at 12 Vdc excluding bounce) initial
Approx. 2 ms (at 12 Vdc excluding bounce) initial
0.64 W (at 12 Vdc)
100 MΩ min. (at 500 Vdc) initial
500 Vdc min. (for 1 minute) initial
98 m / s
2
[Approx. 10 G] min. (misoperating)
10 to 300 Hz, 43 m / s
2
[Approx. 4.4 G] min. (misoperating)
–40˚C to +85˚C (–40 ˚F to +185˚F)
50 ˚C / W (without contact carrying current)
1×10
6
operations
Contact 1×10
5
operations (at 14 Vdc, Motor Load 25 A / 7 A)
Life Expectancy
Contact 1×10
5
operations (at 14 Vdc, Motor Load 20 A / 3 A)
L or N
Weight
Approx. 15 gr
Approx. 8 gr
SOUND PRESSURE LEVEL (for reference)
Sound Pressure level Fast (F)
∗
Operate (at 12 Vdc drive with diode)
Relese (at 12 Vdc drive with diode)
57 dBA nominal
49 dBA nominal
∗
Refer to the measuring condition in the figure of
sound pressure level distribution on page 7.
4
Motor Drive Control（Motor Control）
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