ISA 20A DC Booster Repair

$245.00 evaluation fee

🛡️ 90-Day Warranty ✓ Fee Credited to Repair ⚡ No Forms Needed

June Company provides expert ISA 20A DC repair and calibration. Our technicians specialize in ratio measurement recalibration, excitation source repair, test lead connector replacement, and traceable ratio accuracy verification.

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📋 How It Works

Submit Request – Pay evaluation fee & provide equipment details
Ship to Us – Send your equipment to our Oregon facility
We Evaluate – Detailed diagnosis & repair estimate
Fee Credited – Your evaluation fee applies to repair cost
We Repair – Professional repair with 90-day warranty

🔧 Fast Turnaround: Most repairs are completed within 1–3 business days.
📏 Precision Calibration: NIST-traceable calibrations included for most repairs.
🛡️ Warranty: 90-day warranty on all repairs.
📝 Transparency: Detailed evaluation and repair estimate before work begins.

✓ Evaluation Fee Credited Toward Repair

This evaluation fee is applied as credit toward your final repair cost. After we evaluate your equipment, you'll receive a detailed estimate before any repair work begins.

Description

ISA 20A DC Booster Repair

The ISA 20A DC Booster is a transformer turns ratio tester – it energizes a transformer winding and measures the ratio, excitation current and phase to confirm the windings and the tap changer are intact. The measurement is a ratio, so small errors in either winding measurement compound.

June Company repairs and calibrates the ISA 20A DC Booster for utility transformer crews, substation technicians, and transformer manufacturers. Every instrument is repaired at component level and verified against reference standards before it ships back, with the measured results documented.

Common ISA 20A DC Booster problems we fix

Excitation current measurement errors.
Phase deviation readings incorrect.
Test lead or clamp faults.
Output drive stage failure.
Automatic tap changer sequencing faults.
Display, keypad or front-panel faults.
GPIB, LAN, USB or remote-control faults – which breaks automated test sequences while the instrument still works from the front panel.
Ratio readings inaccurate – verified across the full range rather than at a single tap, since ratio errors that appear only on certain taps are the ones most often missed.

FAQs

Are the measurements verified after repair? Yes, against reference standards, with the measured results documented and returned with the instrument.

Ratio is wrong on some taps but right on others. Instrument or transformer? Worth testing the set first. Tap-dependent errors are exactly what a single-point check misses, and we verify across the full range.

Every repair carries a 90-day parts-and-labor warranty, with a firm quote before any work begins. Email us or submit a service request.

Brand

ISA Repair

ISA gear comes to us for repair and calibration, mostly TTR testers and relay test sets. ISA work by type: TTR Tester Repair, Relay Test Set Repair, Substation Test Set Repair and Circuit Breaker Tester Repair. ISA units on our list include the ISA DRTS 66 Relay Test Set, ISA STS 5000 Substation Test Set and ISA STS 4000 Substation Test Set. A repaired TTR tester from ISA ships calibrated to NIST-traceable standards, under a 90-day warranty. Each ISA job starts with a firm quote you approve.

Shipping & Returns

Packing your equipment. You are responsible for packaging equipment adequately for transit. We strongly recommend the original manufacturer’s case, or double-boxing with at least two inches of shock-absorbing material on all six sides. We return your equipment in the packaging it arrived in, so please send it in packaging that will survive the return trip as well. If your packaging is damaged or inadequate for the return, we will substitute suitable packaging and may charge the cost of materials.

Insurance. Equipment is not insured by June Company while in transit. We strongly recommend insuring your shipment for its full replacement value.

Risk of loss. Risk of loss remains with you until your equipment is received at our facility, and transfers back to you when your repaired unit is delivered to the carrier (F.O.B. shipping point). June Company is not responsible for equipment lost, delayed, misdelivered, or damaged in transit, in either direction.

Return label. A prepaid and preprinted return shipping label should be included with your shipment. If one is not included, we will provide one.

Transit damage. Damage occurring in transit is the responsibility of the carrier. It is not a warranty defect and is not covered by the 90-day repair warranty. Any claim must be filed by you with the carrier; we will supply photographs and documentation to support it at no charge.

Full details: Terms & Conditions, Section 6 · Return Policy