SCR thyristor power controller
 

SCR ( Thyristor ) Power Controller

  scr_thyristor_power_controller

4-20mA OR 0-10VDC SINGLE PHASE ANGLE SOLID STATE RELAY


Salient Features:

  • Panel mounted Phase Angle Solid State Relay.
  • Input-Output opto Isolation 2500 Vrms
  • Virtually free from EMI / RFI
  • The Load power is Analogue (Proportional) to controller input
  • Input Signal LED indicator
  • Heat sink ± Din rail mounting
  • Inbuilt snubber
  • Output to body 4kv isolation
  • Adjustable time delay is also given for pre SSR
  • control Range 10% to 90% of line voltage
  • linearity Better Than ±2% of the range

Precaution:

  • Used for Resistive load & Transformer Inductive load only.
  • Do not give DC voltage at 4-20mA input control of PPC otherwise input of PPC will fail.
  • Phase line voltage should be in range of 230vac ±10% or 440vac±10%.
  • PPC will work in Star with Neutral, Star without Neutral& Delta Connection.
  • Heatsink Temperatures should not increase above 70° C.
  • Use Semiconductor fuse for Short Circuit Protection.
  • Phase angle varies so that Rth will change so bigger size of Heat sink required.
 

Application

  • Glass Industries.
  • Paper Industries.
  • Biscuit Making Machine.
  • Laboratory Equipments.
  • Hot Runner System of Plastic Processing Machine.
  • Furnace Industries.
  • Ceramic Industries.
  • Chapatti Making Machine.
  • Electroplating Machinery.

TYPE OF SSR

OUTPUT

INPUT

CURRENT AMPWITH HEAT SINK AT 55° C. FUSING
CURRENT
I²t
VOLTAGE CURRENT AMP AT 20°C
EMT PPC 44 25 230VAC or 480VAC
PIV-1200 - 1600
VPK
25 AMP

4 - 20 mA
or
0 to 10 VDC

 

8 AMP 500A2S
EMT PPC 44 40 40 AMP 22 AMP 1800A2S
EMT PPC 44 50 50 AMP 28AMP 3000 A2S
EMT PPC 44 75 75 AMP 34 AMP 3500 A2S
EMT PPC 44 100 100 AMP 65 AMP 8000 A2S
EMT PPC 44 125 125 AMP 80AMP 10000 A2S
EMT PPC 44 150 150 AMP 100 AMP 15000 A2S
EMT PPC 44 200 200 AMP 120 AMP 25000 A2S
EMT PPC 44 250 250 AMP 160 AMP 30000 A2S

Input Specification & Output Specification Technical Data

INPUT SPECIFICATION OUT PUT SPECIFICATION
I / P ON VDRM VpK IT A VTM VAC ITSM bA IDRM mA IHO mA DV/DT V/ms I2t A2T
0-10VDC Or 4-20mA 1200 VPK 10 1.60 100 10 75 200 50
16 1.60 160 75 200 120
25 1.85 260 150 250 260
40 1.85 350 150 250 610
50 2.00 350 250 1000 1250
75 2.00 1150 250 1000 5000
90 2.00 1150 250 1000 5000

Technical Data

Output circuit - Switching element   BACK TO BACK SCR
Operational voltage range Vrms 24-480VAC
Peak inverse voltage Vpk 1200Vpk
Rated operational current IT 25A 50A 75A
Frequency range Hz 45-65Hz
Max. off-state leakage current mA <5 mArms
Minimum load current holding current IHO 175 mA 275 mA 275 mA
Rated peak withstand current (t =10 ms) ITSM 320A 800A 1200A
Max. Zero voltage turn on Vpk 15 15 15
Max. load integral i²dt (t = 10 ms) I²t 500A²S 3000A²S 7200A²S
Voltage drop in on-state VTM 1.3V 1.3V 1.3V
Critical current gradient di/dt ≥100 A/µs ≥100 A/µs ≥150 A/µs
Critical voltage gradient Dv/dt 350 V/µs 1500 V/µs 1500 V/µs
Thermal resistance Rth (Junction to case) DC ØJC 1.1 1.0 0.4
Power factor CosØ ≥0.5 (at 600VAC)
Maximum barrier-layer temperature 125°C
Input circuit-control circuit /rated control supply volt 9-32VDC/
Make voltage / Break voltage 9VDC
Max. current consumption 22mA
Switching times max zero cross over make/break 1period/1period
Ambient temperature range operation -30 to +80°C
Test voltage between all isolated circuits (type test) 4kVA