Overcurrent Relay RAS70-3B - Industrial X Supply Co.,Ltd. Website
Overcurrent Relay RAS70-3B - Industrial X Supply Co.,Ltd. Website
Overcurrent Relay RAS70-3B - Industrial X Supply Co.,Ltd. Website
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<strong>Overcurrent</strong> <strong>Relay</strong><br />
<strong>RAS70</strong>-<strong>3B</strong><br />
Made In Japan
The KASUGA <strong>Overcurrent</strong> <strong>Relay</strong> is specially designed to monitor and detect current in each phase<br />
of a 3-phase system and provide a relay operation when an overcurrent condition occurs.<br />
This relay is simple in design, robust in construction and small in size.<br />
Special Features of KASUGA <strong>Overcurrent</strong> <strong>Relay</strong> <strong>RAS70</strong>-<strong>3B</strong><br />
> RAS 70-3 <strong>Overcurrent</strong> <strong>Relay</strong> is designed based on the combination of RAS 70 with a timer.<br />
> Easy wiring constitution for compact panel mounting.<br />
> A manually test button is provided for periodical inspection and product checking.<br />
> Build-in delay timer with adjustable range of 0 ~ 1.0 second, optional : 0 - 10 sec. on request.<br />
> Adjustable current setting from 2 ~ 7 Amps.<br />
> Three Red and one Green LEDs are provided to indicate the status of each phase current<br />
and the auxiliary power supply.<br />
> A manually reset button is provided.<br />
> A lockable front cover is provided to ensure that unauthorized personnel cannot tamper with<br />
the set point.<br />
SPECIFICATIONS<br />
1. Type <strong>RAS70</strong>-<strong>3B</strong><br />
2. <strong>Supply</strong> Voltage AC 230V, 50/60Hz - 15 ~ +10%<br />
3. Current Setting 2 ~ 7 A.<br />
4. Delay Time Setting 0 ~ 1.0 sec.<br />
5. Operating Time With 105% Input < 300 msec<br />
With more than 200% Input < 100 msec.<br />
6. Reset Current value More than 90% of operating value.<br />
7. Output 2C. AC 250V, 5 A (cos 0 = 1)<br />
Approval : UL and CSA recognised.<br />
8. Indication Green LED (auxiliary power supply).<br />
Red LED (relay tripped).<br />
9. Life Electrical : > 100,000 operation.<br />
Mechanical : > 100,000 operation.<br />
10 Protection Structure IP50 (dust protection)<br />
11. Enclosure :<br />
Standard DIN case DIN 96x96x98mm.<br />
Material ABS resin complying with UL94VO.<br />
Weight Approx. 500g.<br />
Knob (:R)<br />
Red LED<br />
(0.C. trip)<br />
Knob<br />
(time setting)<br />
Green LED<br />
(power supply)<br />
TEST button<br />
Red LED<br />
(0.C. trip)<br />
Knob (:S)<br />
Red LED<br />
(0.C. trip)<br />
Knob (:T)<br />
RESET<br />
button
CHARACTERISTICS<br />
<strong>Overcurrent</strong> <strong>Relay</strong> <strong>RAS70</strong>-<strong>3B</strong><br />
Voltage Accuracy Less than 3%<br />
Repeat Accuracy Less than1%<br />
Setting Accuracy Less than 5% of full scale<br />
Temperature Accuracy Less than 5% at ±20°C<br />
Insulation resistance >1000MΩ<br />
<strong>Overcurrent</strong> Withstand 10 times for 3 sec.<br />
Power <strong>Co</strong>nsumption Approx. 2VA<br />
C.T. Power <strong>Co</strong>nsumption Approx. 0.5VA<br />
Voltage withstand<br />
Insulation<br />
IEC 255-5<br />
2kV rms for 1 minute between all case terminals<br />
connected together and the case earth terminal.<br />
2kV rms for 1 minute between independent circuit<br />
including contact circuits.<br />
Impulse test<br />
IEC 255-5<br />
5 KV peak, 1.2/50μs (0.5J) between all terminals and<br />
case, earth and between adjacent terminal.<br />
Environmental withstand<br />
Temperature<br />
IEC 68-2-1 / 68-2-2<br />
Storage and transit - 25°C to +70°C<br />
Operating -25°C to +55°C<br />
Humidity<br />
IEC 68-2-3<br />
56 days @ 93% RH and +40°C<br />
Enclosure protection<br />
IEC 529<br />
IP50 (dust protected)<br />
Vibration<br />
IEC 255-21-1<br />
0.5g between 10 Hz and 150Hz<br />
Electromagnetic wave<br />
Non-operation for radio frequency at 130 ~ 180 MHz<br />
and 400 ~ 500 MHZ (by Walkie-talkie of 5W).<br />
92 ± 0.5<br />
96<br />
PANEL CUTOUT<br />
92 ± 0.5<br />
DIMENSIONS (mm)<br />
96<br />
108<br />
11 80<br />
90
<strong>Overcurrent</strong> <strong>Relay</strong> <strong>RAS70</strong>-<strong>3B</strong><br />
RAS 703<br />
Operating current (A)<br />
Operating current (A)<br />
7<br />
6<br />
7<br />
6<br />
R<br />
S<br />
T<br />
N<br />
Voltage characteristics<br />
(7A, 1 sec.)<br />
70 80 90 100 110 120<br />
<strong>Supply</strong> voltage (%)<br />
Temperature characteristics<br />
(7A, 1 sec.)<br />
-20 0 20 40 60 80<br />
Temperature (°C)<br />
(A)<br />
sec.<br />
KASUGA ELECTRIC WORKS LTD<br />
3-11 Shimorenjaku 8-Chome,<br />
Mitaka Tokyo 181-8518, Japan<br />
Tel: 0422-47-5881<br />
Fax: 0422-44-6277<br />
CONNECTION DIAGRAM<br />
(A)<br />
sec.<br />
RAS 70 - 3<br />
K L<br />
1.1<br />
1.0<br />
1.1<br />
1.0<br />
Operating time (sec.)<br />
Operating time (sec.)<br />
K L<br />
K L<br />
K L<br />
Operating time (sec.)<br />
Power consumption (VA)<br />
1.0<br />
0.9<br />
0.5<br />
0.4<br />
0.3<br />
0.2<br />
0.1<br />
0<br />
Exclusive Agent:<br />
RASP18NB<br />
Operating time-overcurrent<br />
(1sec.)<br />
100 200 300 400 500<br />
<strong>Overcurrent</strong> (%)<br />
CT power consumption<br />
5 6 7<br />
Current (A)<br />
8 9<br />
600 700<br />
51 Kim Keat Road, Unit 05-02<br />
Mun Hean <strong>Industrial</strong> Building, Singapore 328821<br />
Tel: (65) 6250 0522 Fax: (65) 6253 6885/(65) 6253 5879<br />
E-mail: munheansing@munhean.com.sg<br />
<strong>Website</strong>: http://www.munheansingapore.com<br />
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