Product Details:
Minimum Order Quantity | 5 Number |
Usage/Application | Industrial |
Model Name/Number | TSC-313 |
Model | TSC-313-S (Stud mounting) and TSC-313-D (DIN rail mounting) |
Country of Origin | Made in India |
Item | Zero cross over SCR Firing Card for 3 phase capacitor bank selection. |
Aux Supply Voltage | 12vdc @ 1A |
Three Phase Line Voltage | 110 to 500VAC (Special cards are available for 690/750VAC line supply) |
Mounting | Can be easily mounted on the 35 mm DIN rail or on the base plate. |
Card Size | 245 (L) x 109 (W) x 60 (H) mm. (with DIN rail frame) |
Control Command | 12 to 24DC pulse or potential free contact from APFC |
Triggering Pulses or Firing Technique | Gate/ Cathode 12 pulses - isolated from the Input -suitable to fire 25A to 500A |
Triggering Technique | Guaranteed Zero cross over firing to prevent generation of transients and harmonics during switching |
Gate Current | Max. 350 mA. |
Switching time | Min. 100mS (5 AC cycles @ 50Hz line frequency) |
Over Temperature Protection | Facility to accept 2 nos. of thermostat input for fan control and trip function. |
LED Indications | For Power ON,THY1 ON,THY2 ON,FAN ON,CB ON,Over Temperature. |
Description:
Libratherm offers Thyristor Switch Card model TSC-313, specially designed for APFC (Automatic Power Factor Correction) applications to switch ON and OFF, 3-phase capacitor banks, based on the command from the APFC relay module. These cards are developed to trigger silicon-controlled rectifiers(SCRs) or thyristors. The gate/cathode triggering pulses are generated using zero cross-over firing techniques. The three sets of gate/cathode pulses are galvanically isolated using the on-card ferrite core pulse transformers.
Each card can simultaneously trigger 3 sets of back-to-back SCR+SCR modules or 3 sets of back-to-back SCR+Diode modules to switch a 3-phase capacitor bank. TSC-313 accepts control signals in the form of relay contact or DC pulse from the APFC relay unit. When the command is ON, capacitor banks are connected to the power lines, and capacitor banks are disconnected when the command is OFF.
Each TSC-313 card has the provision to accept 2 external thermostat contacts, which can be used to operate the cooling fan mounted on the heat sinks and to trip the circuit in case the heat sink is overheated. On-card LEDs indicate the ON/OFF status of the incoming DC power supply, the ON/OFF status of the capacitor banks, and the heat sink temperature.
Typically, each power factor controller gives 8 to 16 outputs to select that many capacitor banks of different KVAR depending on the total KVAR demand to maintain the unity power factor. Hence, for each output from APFC relay module, it will be required to use 8 to 16 nos. of TSC-313 cards.
The APFC panel builders can use TSC-313 cards as an independent firing card and wire the SCR modules separately mounted on the heat sink in the panel. The physical isolation of electronic cards and SCR modules makes the overall system safer, reliable and it becomes easy to maintain and service.
Additional Information:
Product Details:
Minimum Order Quantity | 1 Number |
Type | Analog |
Brand | LIBRATHERM |
Power | 100 to 240 VAC |
Model Number | LZF-1 |
Country of Origin | Made in India |
Load Configuration | Single phase with respect to Neutral |
Supply Voltage | 230VAC +/-10%,50/60Hz. |
Output Line Voltage | 40 to 240VAC |
Mounting | 4 x Screw mounted on the panel surface. |
Size in mm | 120 x 80 x 50 mm. (H x W x D) |
Triggering Pulses | Gate/ Cathode pulses - Optically isolated from the Input-suitable to fire 25A to 500A |
Number Of Outputs | Single for Back to Back connected SCR . |
Item | Single phase zero cross over SCR firing card |
Control Input | 3 to 32VDC or potential free contact or 4-20mA or 0-5V/0-10V-user selectable using DIP switch. |
Number of Inputs | Single and selectable using on card DIP switch. |
Additional Information:
Product Details:
Minimum Order Quantity | 1 Unit |
Over Voltage Setting | Yes |
Operating Voltage | Three Phase (400 to 690)VAC |
Model Name/Number | LTC-18 |
Smooth Control | 0 to 20Sec |
Configuration | Suitable for Star with Neutral/Without Neutral, Delta Configuration |
Body Material | MS Rugged Enclosure |
Frequency | 50Hz |
Country of Origin | Made in India |
Type | Manual, Automatic |
Brand | Libratherm |
Applicable Max Load | 3000Amp |
Ambient Temperature | 75Deg C |
Usage/Application | Industrial |
Ip Rating | IP20 |
Control Action | Phase angle control (self synchronized) |
Time Delay Between Steps | Soft Start/Stop : 0 to 20Sec |
Surface Treatment | Powerder Coated |
Current Rating | User can fire upto 3000Amp SCR Modules |
Mode | Phase Angle Control |
Mounting | Flat plate mountable using 4 screws |
Load Type | Suitable for both resistive and inductive loads |
Additional Information:
Product Details:
Minimum Order Quantity | 1 Number |
Country of Origin | Made in India |
Item | SCR Firing Card with ZERO Cross over turn ON for single phase or 3 phase load |
Mounting | 35 mm. DIN rail or can be screw mounted on the panel surface. |
Size | 125 x 185 x 65 mm. (H x W x D) |
Models | SCRF-3N and LZF-3N |
Control Input | 3 to 32VDC or potential free contact for SCRF-3N 4-20mA/0-5V/0-10V for LZF-3N |
Number of Inputs | Common for all 3 outputs or individual for each output. |
Triggering Pulses | Gate/ Cathode pulses-Optically isolated from the Input suitable to fire 25A to 500A |
Number Of Outputs | 3 independent Back to Back SCR can be triggered. |
Load Configuration | 3 independent single phase AC load w.r.t. neutral. 3 independent two phase AC load w.r.t. second |
Supply Voltage | 100-250VAC,single phase,50/60Hz. |
Model | Product Description | Size (H X W X D) mm. |
SCRF-3N | Single/ 3 phase zero cross over SCR firing card control signal : DC pulse or potential free contact | 125 x 185 x 65 |
LZF-3N | Single/ 3 phase zero cross over SCR firing card control signal : 4-20mA/0-5V/0-10V analogue. | 125 x 185 x 65 |
Additional Information:
Product Details:
Minimum Order Quantity | 1 Number |
Brand | LIBRATHERRM |
Usage/Application | SCR firing card for 3 phase capacitorbank |
Phase | Three Phase |
Country of Origin | Made in India |
Model | TSC-306-S (Stud mounting) and TSC-306-D (DIN rail mounting) Cathodic firing technique. |
Models | TSC-303-S (Stud mounting) and TSC-303-D (DIN rail mounting) Anodic firing technique. |
Item | Zero cross over SCR Firing Card for 3 phase capacitor bank selection. |
Additional Information:
Product Details:
Minimum Order Quantity | 1 Number |
Size | 22.5 x 75 x 100 mm. (w x h x d) |
Country of Origin | Made in India |
Item | Single phase zero cross over SCR firing Module |
Models | LZF-10 |
Control Input | 12 to 36VDC |
Triggering Pulses | Gate/ Cathode pulses - Optically isolated from the Input-suitable to fire 25A to 500A |
Number Of Outputs | Single for 1 pair of Back to Back connected SCR. |
Load Configuration | Single phase with respect to Neutral |
Supply Voltage | 230VAC +/-10%,50/60Hz. |
Output Line Voltage | 40 to 250VAC |
Mounting | On standard 35 mm DIN rail |
Additional Information: