RELIANCE 0-52876 VTGA Gate Driver Circuit Board

Technical Specifications

Model:0-52876

Brand:RELIANCE

Product type:VTGA Thyristor Gate Driver PCB Board

Substrate:FR4 printed circuit board

Weight:0.34kg

Dimension:160mm110mm2.8mm

Operating temperature:0℃ ~ 60℃

Storage temperature:-40℃ ~ +85℃

Relative humidity:5%~85%,non-condensing

Certification:CE

System compatibility

0-52876 belongs to RELIANCE MaxPak series VTGA gate driver board.

Designed for Reliance legacy MaxPak DC drive rack.

Receive pulse signal from IRFA firing board 0-52850.

Work together with ACCA 0-52837,CVCB 0-52855,VCTC 0-52854 and OLVC 0-52808.

Used for thyristor gate signal amplification in MaxPak power converter.

Commonly used for old drive equipment maintenance and spare replacement.

Function

0-52876 VTGA is thyristor gate driver amplifier card for RELIANCE MaxPak DC drive.

Receive low power firing pulse signal from IRFA ring counter board.

Amplify pulse current and power to drive thyristor gate reliably.

Isolate control circuit and high power thyristor power section.

Provide gate disable interlock function under drive fault condition.

Ensure consistent gate triggering for each SCR in three-phase bridge circuit.

Installation

Power off the whole drive cabinet and cut main power supply.

Insert 0-52876 board into MaxPak designated slot.

Fasten front panel fixing screws.

Connect edge connector and gate output wiring to thyristor gates.

Check wiring insulation and high voltage safety clearance.

Power on system,test pulse amplitude and phase balance.

Verify thyristor triggering and motor running performance.

Interface

MaxPak edge connector,thyristor gate drive output terminals,status LED indicators.

Feature

RELIANCE 0-52876,MaxPak VTGA gate driver PCB assembly.

Pulse power amplification circuit for SCR gate drive.

Electrical isolation between low voltage control circuit and high voltage power circuit.

Balanced pulse output to maintain three-phase current symmetry.

Clear terminal marking for safe maintenance and troubleshooting.

Discontinued obsolete board,supply only for old drive equipment spare replacement.

Suitable for metallurgy,paper-making heavy-duty MaxPak DC drive renovation.

Diagnostic

Three-phase current unbalance:gate pulse amplitude inconsistent or board component aging;

No thyristor trigger:no amplified gate pulse output;

Drive trip randomly:gate signal interference or poor connector contact;

LED no display:board auxiliary power supply failure.

Product Brief

RELIANCE 0-52876 VTGA is MaxPak thyristor gate driver circuit board.

It amplifies firing pulse from IRFA board and provides isolated gate signal for SCR,widely used as spare part for heavy industry DC motor drive maintenance.

Disclaimer

All parameters are for reference only and not for quotation basis. Goods are scarce and will be powered on for inspection before shipment. Overseas delivery lead time 3-7 working days. This item is only used for equipment maintenance and retrofit.