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Digital Transformer Turns Ratiometer Model 8511

Precision, Accuracy, and Confidence in Every Test

The DTR® 8511 is the next-generation digital transformer ratiometer, engineered to make transformer testing faster, safer, and more reliable than ever. Building on the proven performance of the DTR® 8510, this enhanced model introduces modern upgrades for the field—combining rugged portability with advanced measurement technology.

Designed for Field Technicians

No hand cranking. No calibration. No wasted time.

The DTR® 8511 was built for fast, accurate, and hassle-free testing of transformers (power, VT/PTs, and CTs). With its brighter display, ergonomic design, and built-in safety checks, you’ll have confidence in every result.

Why Choose the DTR® 8511?
 
  • Wide Ratio Range - Accurately measure transformer ratios up to 8000:1 for VT/PTs and 1000:1 for CTs.
  • High Precision - Advanced low-voltage step-down technology ensures repeatable, reliable results.
  • Automatic Testing - Fully automatic cycles check for lead reversal and open circuits—no manual balancing required.
  • Built-In Continuity & Deviation Checks - Instantly compare measured values to stored nameplate data for clear pass/fail results.
  • Rugged & Field-Ready - Lightweight IP53-rated design with a bright backlit display and oversized test button for easy use—even with gloves.
  • Flexible Power Options - Operates on rechargeable NiMH batteries, USB-C, or 12 VDC supply.
  • Large Storage Capacity - Save up to 9,801 test results for recall and reporting.
  • Seamless Data Management & Connectivity - Connect directly to your PC via the isolated USB interface to manage results, configure nameplate values, and generate professional reports with the included DataView® software and DTR® Control Panel.

Proposition 65 Warning

⚠️ WARNING: This product can expose you to chemicals, including Bisphenol A, Styrene, Acrylonitrile, 1,3-Butadiene, Ethylbenzene, Nickel, Carbon, and Lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Introducing the AEMC® Digital Transformer Ratiometer Model 8511


Below are a series of videos to help you get acquainted with the new DTR 8511 including an introductory video, an unboxing video covering the various accessories that come with the DTR 8511, and a comparison of the DTR 8511 versus the DTR 8510.

Watch Now!
  
NOTE: Our complete catalog is not available for direct online purchase, refer to the Status Column for purchasing options. Items that do not have an Add to Cart button must be purchased from an Authorized Distributor.
Model Cat. # Description List Price Quantity/Status Distributor Stock Check
DTR 8511 2136.55 Digital Transformer Ratiometer DTR® Model 8511 (110/220) V $3,790.00 Consult Factory for Availability
ModelDTR 8511
Cat. #2136.55
DescriptionDigital Transformer Ratiometer DTR® Model 8511 (110/220) V
List Price$3,790.00
Consult Factory for Availability

DTR® Model 8511 - Cat. #2136.55 :

Includes extra-large carrying bag, set of (2) 15 ft test leads (primary and secondary) with (4) alligator clips (red/black), 6 ft USB Type-C to Type-C cable, USB Type-C wall power adapter, 10 ft USB Type-A to Type-C cable, AC power adapter w/cord, (6) internal rechargeable AA NiMH batteries, and USB drive with DataView® software and user manual.

Print
TECHNICAL SPECIFICATIONS 1
Catalog # 2136.55
MEASUREMENTS
VT / PT Ratio Range Auto-Ranging 0.8000:1 to 8000.0:1
  VT / PT Accuracies* Ratio 0.8000 to 9.9999 ± 0.2 % of Reading
Ratio 10.000 to 999.99 ± 0.1 % of Reading
Ratio 1000.0 to 4999.9 ± 0.2 % of Reading
 Ratio 5000.0 to 8000.0 ± 0.25 % of Reading
Excitation Current Up to 2 A
CT Ratio Range Auto-Ranging 0.8000 to 1000.0
CT Accuracy* ± 0.5 % of Reading
Output Voltage (VT / PT) 30 V @ 64 Hz
Output Voltage (CT) 5 V @ 64 Hz
RECORDING
Data Storage 9801 measurements
OTHER FEATURES
Communication USB Type-A to Type-C USB 2.1
Software DataView® included, free App for Android™
Languages Support English,Spanish,French,Italian,German,Portuguese
Display LCD 20 characters x 4 line display
Powered from phase voltage Phase Power Adapter (Cat. #2137.90)
Power Supply USB Type-C and 12 VDC charger
Measurement Method In accorance with IEEE Std. C57.12.90TM
Buttons 6 total buttons (One to start testing and five for navigation)
Battery Life 500 VT / PT Tests
Battery Charge Time1 10 h
Weight 7.1 lbs (3.2 kg)
SAFETY AND MECHANICAL
Safety Compliance IEC 61010-2-030, IEC 61326-1, IEC 60529, IEC 60068-2-6, IEC 60068-2-27, IEC 60068-2-31, Pollution 2
Note 1: Refer to the user manual for complete technical specifications
* : Reference Condition: (23 ± 5) ºC, (50 to 70) % RH, full battery charge, no external fields or noise.

User Manuals

Quick Start Guides

Datasheets

Brochures

Rent Now

Comparison Charts

Software

Forms

Troubleshooting

Applications - Graphic Illustrations

Videos

AEMC - Introducing the NEW DTR 8511: Digital Transformer Ratiometer

AEMC - Unboxing the NEW DTR 8511

AEMC - DTR 8511 vs DTR 8510: What's New and Improved?

Model Cat. # Description List Price Quantity/Status Distributor 
Stock Check
2118.53 Fuse – Set of 5, 0.5A, 250V, (Slow Blow), 5 x 20mm for Models DTR® 8500 & 8510 $14.25
2118.55 Fuse – Set of 3, 4 A, 125 V, (Slow Blow), 5 x 20 mm for Models DTR® 8500 & 8510 $26.25
2133.72 Small Classic Tool Bag for field use. 12 Exterior and 14 Interior pockets. Dimensions: (13.0 x 9.8 x 9.5) in.
For use with PEL Models: PEL 102, PEL 103, PEL 112 & PEL 113, DMM/Oscilloscope/Power Analyzer Model: OX 5042B, Megohmmeters Models: 5050, 5060, 5070 & 6505, 6550 & 6555.Data Loggers Models: DL913 & DL 914.
$39.00
2133.73 Extra Large Classic Tool Bag Replacement for Models: 3945/3945-B, 6240, 6255, 6292, 6471, 6505, 5050, 5060, 5070, 8333, 8335, 8336, 8435, 8436, 8510 & PEL105
Dimensions: (18 x 9 x 12) in
$58.00
2133.76 Bag - Extra Large Carrying Bag w/Rubber Bottom (Replacement for Model 8345 & OX9000 series) may be used with Models: 3945/3945-B, 6240, 6250, 6255, 6471, 6472, 6505, 5050, 5060, 5070, 8333, 8335, 8336, 8436, 8510, PEL 105, & PEL 115
Dimensions: (22.5 x 12.5 x 7.5) in
$148.00
2136.77 Lead – Set of 2 (Replacement), 15 ft for DTR® Models 8500 & 8510 Replacement for Cat #2118.48 $299.00
2136.78 Battery – Replacement, Set of 2, 12V NiMH Rechargeable for DTR® Model 8510 $255.00
2136.79 Battery Charger – Replacement, 110 to 240V Charger for DTR® Model 8510 $265.00
2136.80 Cable – 10 ft USB Type A to Type B for use with Models 8333, 8335, 8336, 8435, 8436, PEL 102, PEL 103, PEL 105, PEL 112,PEL 113, & PEL 115 (Replacement for Models DTR® 8510, 5060, 5070, C.A 6116, C.A1727, DL913, & DL914) Replaces Cat #2140.46 $19.00
5000.99 Clip - Safety Alligator - Black (1000V CAT IV, 15A, UL V2) $12.00
5100.00 Clip - Safety Alligator - Red (1000V CAT IV, 15A, UL V2) $12.00
5100.02 Latches - Replacement set of 2 for use with AEMC Yellow cases $13.50
5100.25 Adapter - USB Type C Wall Power Adapter $32.00 Consult Factory for Availability
5100.26 Adapter - Replacement, AC Power Adapter w/ Cord for DTR Model 8511 $84.00 Consult Factory for Availability
5100.27 Cable - 10 ft Type C to Type A $18.00 Consult Factory for Availability
5100.28 Cable - 6ft USB Type C 3.1 PD to Type C $25.00 Consult Factory for Availability
Model
Cat. #2118.53
DescriptionFuse – Set of 5, 0.5A, 250V, (Slow Blow), 5 x 20mm for Models DTR® 8500 & 8510
List Price$14.25
Model
Cat. #2118.55
DescriptionFuse – Set of 3, 4 A, 125 V, (Slow Blow), 5 x 20 mm for Models DTR® 8500 & 8510
List Price$26.25
Model
Cat. #2133.72
DescriptionSmall Classic Tool Bag for field use. 12 Exterior and 14 Interior pockets. Dimensions: (13.0 x 9.8 x 9.5) in.
For use with PEL Models: PEL 102, PEL 103, PEL 112 & PEL 113, DMM/Oscilloscope/Power Analyzer Model: OX 5042B, Megohmmeters Models: 5050, 5060, 5070 & 6505, 6550 & 6555.Data Loggers Models: DL913 & DL 914.
List Price$39.00
Model
Cat. #2133.73
DescriptionExtra Large Classic Tool Bag Replacement for Models: 3945/3945-B, 6240, 6255, 6292, 6471, 6505, 5050, 5060, 5070, 8333, 8335, 8336, 8435, 8436, 8510 & PEL105
Dimensions: (18 x 9 x 12) in
List Price$58.00
Model
Cat. #2133.76
DescriptionBag - Extra Large Carrying Bag w/Rubber Bottom (Replacement for Model 8345 & OX9000 series) may be used with Models: 3945/3945-B, 6240, 6250, 6255, 6471, 6472, 6505, 5050, 5060, 5070, 8333, 8335, 8336, 8436, 8510, PEL 105, & PEL 115
Dimensions: (22.5 x 12.5 x 7.5) in
List Price$148.00
Model
Cat. #2136.77
DescriptionLead – Set of 2 (Replacement), 15 ft for DTR® Models 8500 & 8510 Replacement for Cat #2118.48
List Price$299.00
Model
Cat. #2136.78
DescriptionBattery – Replacement, Set of 2, 12V NiMH Rechargeable for DTR® Model 8510
List Price$255.00
Model
Cat. #2136.79
DescriptionBattery Charger – Replacement, 110 to 240V Charger for DTR® Model 8510
List Price$265.00
Model
Cat. #2136.80
DescriptionCable – 10 ft USB Type A to Type B for use with Models 8333, 8335, 8336, 8435, 8436, PEL 102, PEL 103, PEL 105, PEL 112,PEL 113, & PEL 115 (Replacement for Models DTR® 8510, 5060, 5070, C.A 6116, C.A1727, DL913, & DL914) Replaces Cat #2140.46
List Price$19.00
Model
Cat. #5000.99
DescriptionClip - Safety Alligator - Black (1000V CAT IV, 15A, UL V2)
List Price$12.00
Model
Cat. #5100.00
DescriptionClip - Safety Alligator - Red (1000V CAT IV, 15A, UL V2)
List Price$12.00
Model
Cat. #5100.02
DescriptionLatches - Replacement set of 2 for use with AEMC Yellow cases
List Price$13.50
Model
Cat. #5100.25
DescriptionAdapter - USB Type C Wall Power Adapter
List Price$32.00
Consult Factory for Availability
Model
Cat. #5100.26
DescriptionAdapter - Replacement, AC Power Adapter w/ Cord for DTR Model 8511
List Price$84.00
Consult Factory for Availability
Model
Cat. #5100.27
DescriptionCable - 10 ft Type C to Type A
List Price$18.00
Consult Factory for Availability
Model
Cat. #5100.28
DescriptionCable - 6ft USB Type C 3.1 PD to Type C
List Price$25.00
Consult Factory for Availability

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