Product Description
Save time and field labor by purchasing a completely upgraded drop-in replacement tap changer.
We can overhaul and upgrade your old existing LRT200 to LRT200-2 or LRT200A-2. Please contact your sales representative at 800-338-5526 for more details.
Leads sold separately - see High Amp or Low Amp
Every rebuild of the LRT200-2 done by Prolec-GE Waukesha Components Group includes the following standard upgrades:
- Replacement of the original paper-based phenolic support tube with a filament wound fiberglass tube. This tube has higher mechanical strength and superior moisture resistance characteristics. Machined openings between the stationary selector switch contacts and tap changer assembly end plates have been added to eliminate potential for flashover.
- Bypass switch upgrade to latest design.
- Flanged threaded inserts in the main support cylinder for anchoring the vacuum interrupter assemblies.
- Upgrade of the vacuum interrupter lower actuator arms to latest LRT200-2 design.
- Replacement of the laminated wood inner and phenolic outer selector shafts with new fiberglass re-enforced epoxy shafts offering greater mechanical strength and superior moisture resistance.
The following list is a standard scope of work completed when overhauling the LRT200-2:
- Thorough receiving inspection documenting specific details of any observable failures and condition of all essential parts.
- Disassemble entire tap changer, including the vacuum interrupter assemblies, and clean / inspect all reusable parts and sub-assemblies.
- Replace paper based main support cylinder with a filament wound fiberglass cylinder.
- Replace laminated Geneva gears with solid stainless steel gears.
- Hi-pot test the vacuum interrupters and assess percentage of wear to verify usability.
- Replace all selector, bypass, and reversing switch stationary and moving contacts.
- Replace all collector rings.
- Replace Inner / outer selector drive shafts with new upgraded fiberglass re-enforced epoxy shafts and new bearings.
- Replace all vacuum interrupter dual slope control cams and vacuum bypass control cams.
- Replace all endplate bushings, springs, and locking hardware.
- Replace both position indicator shaft beveled gears.
- Thoroughly inspect and replace as necessary the following:
- Drive gears and Geneva drive cam
- Drive motor and capacitor
- CT’s, support tubes, and control wiring harness
- CT’s, support tubes, and control wiring harness
- CT shorting switch
- Repair / re-wrap high amp leads with new creped Kraft paper as required (at additional cost).
- Low amp leads (if contaminated or damaged) replaced (at additional cost)
- All overhauled units will contain Jennings vacuum bottles.
- Reassemble the LTC, calibration and timing to original OEM specifications.
- Perform 25,000 mechanical operations run in test, and final inspection.
