TAR  -   SOLID STATE RELAYS FOR CAPACITOR SWITCHING    

WITH PIV 1600V -1800V

  • High PIV- Specially designed for capacitor discharge application with high PIV 1600V/1800V and ultra-low zero crossing switching and high I2t rating.

  • Back to Back SCR - The use of extra large Thyristor chips enables high surge current rating. Surge current rating of 4700 Amps and RMS current of 300 Amps.

  • DCB Technology – DCB (direct-copper bonded) Technology virtually eliminates mismatching and repeated expansion at solid interface. The thermal expansion co-efficient of the bonded unit closely matches with that of semiconductor device. This method provides lower thermal junction to case resistance

  • High dv/dt rating 

  • High isolation voltage of 4000V input and output, 2500V between heatsink and terminals

  • Contact-less switching and built-in drive circuitry reducing EMI generation and maintenance cost.

  • Faster response time and can connect capacitors within same cycle when trigger is received.

Current

ITSM (A)

I2t (KA2s)

IRM (mA)

VTM  (V)

Type No

Package

16 A

210

0.54

4

1.6(25A)

66 DAS   16Z

TAR 002

25 A

370

0.68

4

2.4(75A)

66 DAS   25Z

40 A

770

2.965

8

1.95(120A)

66 DAS   40Z

60 A

1300

8.50

20

5.8(200A)

66 DAS   60Z

75 A

1700

14.5

20

5.8(200A)

66 DAS   75Z

100 A

2000

20.0

25

1.75(300A)

66 DAS 100Z

125 A

2200

24.2

25

1.65(400A)

66 DAS 125Z

150 A

2700

36.45

30

1.75(500A)

66 DAS 150Z

TAR 003

200 A

4000

80.0

30

1.8(600A)

66 DAS 200Z

250 A

4700

110

30

1.7(600A)

66 DAS 250Z

TAR 004

300 A

5400

180

30

1.4(600)

66 DAS 300Z

 

            SSR Selection Guide

  •  Capacitive loads have high surge currents. Normal surge currents being 3 times higher than normal load current. Surge currents of the relay (ITSM) rating is one of the main deciding factors Suggested SSR rating for APFC application : 66 DAS 75Z for 16 kVAr, 66 DAS 100Z for 25 kVAr.

  • The conventional method to use contactors or electro-mechanical relays results in high EMI generation. Switching by electro-mechanical relays is slow and hence cannot compensate for fast varying loads like welding machines, moulding machines, elevators, etc. The capacitor banks have to be switched on/off in the shortest time possible. Apart from fast switching, SSRs can increase capacitor life, reduce maintenance requirement and wear-out of electrical gear due to zero surge switching.

  • System can attain PF closer to unity as against use to mechanical relays and hence reduces energy losses. Due to ultra-low zero crossover switching surges on the system are drastically reduces and capacitor are switched on/off within the same cycle. Solid state relays have very high lifetime as compared to electro-mechanical relays due to contact-less switching and is only limited by power dissipation techniques (heatsink) used.

Min I/P Voltage

5 V

 

Min O/P Voltage

48 V

Max I/P Voltage

15 V

Max transient overvoltage

1600 V

Max turn-on time

8.3 ms

Max dv/dt @85 oC

1000 V/ us

 Max turn-off time

8.3 ms

Max thermal resistance (J-C)

0.6 oC/W

Min turn-off current

0.25 mA DC

Max operating Temperature

125 oC

Min turn-off voltage

1 V DC

Max turn-on time

½ cycle

Max electrical isolation

4000 VRMS

On state voltage drop

1.1V

Max Reverse Voltage

- 15 VDC

Min load current

5mA

info@taecl.com