Product Description

Model Definition

• 086466: Base part number for Reliance three‑phase rectifier stack family

• 60: Specific current rating and hardware revision (60A class, standard duty)

• R: Standard revision, non‑coated, no RC snubber variant.

Technical Specifications

• Input: Three‑phase AC, 230/460 VAC, 50/60 Hz

• Output: Adjustable DC, up to 60A continuous, voltage matched to drive rating

• Power Devices: Press‑pak thyristor pairs (three legs, six SCRs)

• Heat Sinks: Dual two‑section aluminum heat sinks, forced‑air cooled

• Gate Interface: Two 0‑51378‑19 PC gate coupling boards (per side), with transformers, resistors, diodes

• Protection: Fuse‑protected legs, MOV transient suppression (optional), no RC snubber

• Operating Temperature: 0 °C to +60 °C, storage −40 °C to +85 °C

• Coating: Non‑conformal coated (standard industrial finish)

• Mounting: Three metal brackets for chassis installation

• Certifications: CE compliant, meets industrial safety standards.

Interface and Communication Configuration

• AC Input: Three‑phase line terminals (L1/L2/L3) for grid connection

• DC Output: Positive/negative bus terminals to drive DC link and motor armature

• Control Interface: Gate drive connectors to 0‑51378‑19 coupling boards, receiving firing signals from drive control board

• Communication: No independent data link; operates as power stage under drive system control

• Diagnostics: Thermistor for overheat detection; fuse status indicators for fault monitoring.

Core Functions

• Converts three‑phase AC to variable DC output via phase‑angle control for precise DC motor speed/torque regulation.

• Delivers up to 60A continuous DC for medium‑horsepower motor loads in industrial drives.

• Isolates control logic from high‑power AC lines via gate coupling boards, enhancing electrical safety.

• Dissipates heat via dual heat sinks to maintain thermal stability during continuous operation.

Application Scenarios

• Reliance MaxPak and MaxPak Plus DC drive systems.

• Heavy industries: steel, paper, mining, cement, oil/gas processing.

• Medium‑horsepower DC motors (20–100 HP) for conveyors, extruders, winders, cranes.

• Environments with moderate electrical noise and contamination (non‑coated design).

Usage and Maintenance Instructions

Usage

• Mount the rectifier stack securely in the drive cabinet using the three brackets, ensuring unobstructed airflow to heat sinks.

• Connect three‑phase AC input to L1/L2/L3 terminals and DC output to drive DC link, verifying polarity and torque specifications.

• Attach gate drive cables to control connectors and confirm firing signal compatibility with the drive controller.

• Before power‑on, inspect all connections for tightness and short circuits; power on and monitor via drive diagnostics.

Maintenance

• Keep cabinet clean and dry; inspect heat sinks quarterly for dust buildup and clean with compressed air if needed.

• Check power terminals and connectors annually for corrosion, looseness, or overheating; retorque as required.

• Monitor thermistor and fuse status indicators regularly to detect overheat/overcurrent faults early.

• Store spare units in anti‑static bags in cool, dry location; repairs only by qualified personnel.

• Replace with identical non‑coated units to maintain thermal and electrical compatibility.