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Avtron LPV600 - User Manual

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LPV600 994210
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Overview

  1. Function Description
  2. Important Technical Specifications
  3. Usage Features
  4. Maintenance Features

The Avtron Model LPV600 is a resistive load bank, designed primarily for indoor use, for electrically loading and testing generators. It is a self-contained unit with a part number of LPV600 994210.

Function Description:

The primary function of the LPV600 load bank is to dissipate electrical energy, converting it into heat, for testing power sources such as generators. It allows for the application of various resistive loads to a power source to verify its performance under different load conditions. The unit incorporates safety features to protect both the operator and the equipment during operation.

Important Technical Specifications:

  • Rated Power: 600 kW at 600 VDC and 300 kW at 300 VDC.
  • Load Steps (at 600 VDC): 240 kW, 120 kW, 120 kW, 60 kW, 20 kW, 20 kW, 10 kW, 5 kW, 2 kW, 2 kW, and 1 kW.
  • Load Steps (at 300 VDC): 120 kW, 60 kW, 60 kW, 30 kW, 10 kW, 10 kW, 5 kW, 2.5 kW, 1 kW, 1 kW, and 0.5 kW.
  • Load Step Selection: All load steps are selected by toggle switches.
  • Fan Motor: 5 HP, 3-phase motor.
  • Fan Motor Power: Operates from 240/480 volts, 3-phase, 60 Hz.
  • Fan Motor Current: 14.4/7.2 Amp per phase.
  • Control Circuit Power: 120V, single phase, 60 Hz, 20 amp source. An integral 480/120V control power transformer is provided, so no external 120V power is required.
  • Cooling Airflow: Continuous ventilation of 15,000 CFM or greater is required if operated in a closed space.
  • Exhaust Air Temperature: Can exceed 350°F above ambient under full load conditions.
  • Maximum Allowable Intake Air Temperature: 110°F.
  • Construction: Aluminized steel, forming a rigid structure.
  • Mobility: Mounted on five-inch casters, with one set provided with wheel locks.
  • Altitude: Suitable for operation between sea level and 2,000 ft. maximum altitude.

Usage Features:

  • Control Panel: Mounted on the front face of the load bank, it includes all necessary switches for operation, as well as digital Volt and Ammeters for displaying DC Volts and DC Amps.
  • Load Connection: Made to bus bars labeled POS (+) and NEG (-) for both 600 VDC and 300 VDC, located within the unit. Proper polarity must be observed to prevent contactor damage.
  • Fan Failure Protection: Equipped with a differential pneumatic pressure air switch (S51) to sense airflow and a slave relay (K30) to disconnect control power if fan power is lost, motor overload trips, or air screens are blocked.
  • Emergency Shutdown: In an emergency, the MASTER LOAD switch should be shut down first, then the generator. This allows the fan motor to continue running to cool heated elements.
  • Operating Modes: Features a MANUAL/AUTO MODE Switch to select between Manual Mode (Local Panel) or Auto Mode (PLC Control, supplied by others).
  • Fan Rotation Control: A FAN ROTATION ABC/CBA Switch allows reversing the cooling fan's rotation. The fan must be turned off and allowed to stop before changing this setting.
  • Load Step Application: KW LOAD Step Switches allow individual load steps to be turned on or off. The MASTER LOAD ON/OFF Switch connects power to all selected load steps.
  • Lower Voltage Operation: The applied kW with a lower voltage can be computed using the formula: kW Applied = kW Rated X (Voltage Applied)² / (Voltage Rated)². The rated voltage should never be exceeded to prevent overheating.
  • Safety Interlocks: Two limit switches (LS1 and LS2) on access doors prevent load application if doors are open.

Maintenance Features:

  • Scheduled Maintenance: Examples of scheduled maintenance procedures are provided, emphasizing that all maintenance work must be performed by qualified personnel.
  • Daily Checks: Include removing airflow restrictions, checking screens for damage, verifying proper airflow, and ensuring no recirculation of exhaust air.
  • Three-Month or 500-Hour Checks: Involve inspecting access panels, load resistors, ceramic insulators, loose hardware, connections for oxidation/corrosion, airflow switch operation, contactors for pitting/corrosion, and cleaning the unit.
  • Annually: The blower motor must be lubricated according to the manufacturer's specifications on the motor nameplate.
  • Parts Replacement: Access to components is facilitated by removable cover panels. A Replacement Parts List is provided, and Avtron maintains an inventory of commonly used items.
  • Troubleshooting Guide: An appendix provides a troubleshooting guide with common problems and possible causes/remedies.
  • ESD Precautionary Guidelines: Instructions for handling ESD sensitive circuit card assemblies and devices are provided to prevent damage from electrostatic discharge.

Avtron LPV600 Specifications

General IconGeneral
BrandAvtron
ModelLPV600
CategoryIndustrial Equipment
LanguageEnglish

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