1. Transformer Turns Ratio  Meters
2. Circuit Breaker Timers
3. Insulation Resistance Meters
4. Low Resistance Meters
5. Current Transformer Testers
6. Relay Test Equipment
7. Vacuum Bottle Testers

1. Generates its own 3-phase transformer test voltage from single-phase AC or DC Power input
2. Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards plus phase shifting transformers
3. 64 x 128 graphic LCD screen
4. Store up to 128 transformer test-plans in Flash EEPROM
5. Store up to 112 test records in Flash EEPROM
6. Built-in USB Flash Drive Interface
7. Computer Interface (RS-232C and USB Port)
8. 4.5 Inch thermal printer
9. Built-in transformer load tap changer
10. Powered from a single phase 100-264 Vac 50/60 Hz

Vanguard’s new TRI-PHASE is a true 3-phase transformer turns ratio tester designed to conform to the IEEE C57.12.90 measurement method. The TRI-PHASE outputs a 3-phase excitation test voltage to the three transformer primary windings. The induced 3-phase secondary voltages are sensed and the transformer turns ratio is calculated. The TRI-PHASE is capable of measuring turns ratios from 0.8 to 15,000. The 3-phase excitation current, phase angle readings along with the turns ratios are displayed on the built-in LCD. Since a 3-phase voltage is used to excite the transformer windings, the TRI-PHASE can detect and measure turns ratios of any transformer type. The TRI-PHASETM can easily measure the turns ratio of phase-shifting transformers where other 3-phase transformer ratio testers cannot.

1. Highest ratio: 0.8 - 15,000
2. Microprocessor controlled
3. Computer Interface
4. No calibration required
5. Display excitation current
6. Display winding polarity
7. Calculate turn ratio in percentage
8. Rugged, portable, inexpensive and easy to use

Vanguard Instruments Company’s Model ATRT-01 Series 2 is a third generation microprocessor-based, single-phase, automatic, transformer-turns-ratio tester.The ATRT-01 is an AC-powered, transformer turns-ratio tester. The ATRT-01 determines the transformer turns ratio by precisely measuring the voltages across the unloaded transformer windings and then displaying the voltage ratio.

1. Highest ratio: 0.8 - 15,000
2. Microprocessor controlled
3. Computer Interface
4. No calibration required
5. Battery or AC power
6. Display excitation current
7. Display winding polarity
8. Calculate turn ratio in percentage
9. Rugged, portable, inexpensive and easy to use

The ATRT-01B Series 2 is ac-line or rechargeable-battery powered transformer turns-ratio tester. The ATRT-01B is powered by a 6-Volt, 7 Ampere-hour, lead-acid battery. This high capacity, plus the low-power consumption circuitry allows the ATRT-01B to be used continuously for up to 6 hours between recharges. A built-in charger lets the ATRT-01B be used while the battery is being charged.

1. Highest ratio: 0.8 - 15,000
2. Microprocessor controlled
3. Battery power (D-Cells)
4. Computer Interface
5. No calibration required
6. Display excitation current
7. Display winding polarity
8. Calculate turn ratio in percentage
9. Rugged, portable, inexpensive and easy to use

The ATRT-01D Series 2 transformer turns ratio tester is powered by six D-cells. Up to 250 tests can be run on one set of D-cell batteries. Users can also use rechargeable D-cell batteries in the Model ATRT-01D.

1. Highest ratio: 0.8 - 15,000
2. Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards
3. 3 Test voltages available: 8Vac, 40Vac, 100Vac
4. Phase angle and excitation current measuring
5. Computer Interface (RS-232C and USB Port)
6. USB flash drive interface
7. Name-plate turns ratio calculation
8. Computed % error based on measured and calculated ratio
9. Built-in 4.5" thermal printer
10. Powered from a single phase 100-264 Vac 50/60 Hz

The Vanguard Instruments Model ATRT-03 S2 is the third generation, microprocessor-based, automatic, three phase, transformer turns-ratio tester. This light weight, rugged, portable unit is designed for transformer testing at utility power substations.
The ATRT-03 S2 determines the transformer turns ratio using the IEEE C57.12.90 measurement method. The ATRT-03 S2 outputs an excitation test voltage to the transformer primary windings. The induced secondary voltage is sensed and the transformer turns ratio is calculated. The ATRT-03 S2 is capable of measuring turns ratios from 0.8 to 15,000. The transformer turns-ratio, excitation current, and phase angle readings are displayed on the large LCD. The automatic transformer type detection feature allows the ATRT-03 S2 to detect and test 130 transformer types defined by ANSI, CEI/IEC and Australian standards.

1. Highest ratio: 0.8 - 15,000
2. Built-in 4.5" thermal printer
3. Excitation current measuring
4. Phase angle measuring
5. Computer interface
6. Name-plate turns ratio calculation
7. Computed % error based on measured and calculated ratio
8. Automated phase switching

The ATRT-03 is a three-phase, transformer turns-ratio tester. The Model ATRT-03 is lightweight, rugged, and portable, and is designed for transformer testing at utility power substations.
The Model ATRT-03/03A determines the transformer turns ratio by accurately measuring the voltages across the unloaded transformer windings and then displaying the ratio of these voltages (ratios range from 0.8 to 15,000). The ATRT-03A calibrates each measurement to ensure the turns-ratio accuracy.

1. Highest ratio: 0.8 - 15,000
2. Built-in 4.5" thermal printer
3. Excitation current measuring
4. Phase angle measuring
5. Computer interface
6. Name-plate turns ratio calculation
7. Computed % error based on measured and calculated ratio
8. Input power: 85-264 Vac;
   110-370 Vdc and 12 Vdc car battery
9. AC or battery powered
10. Automated phase switching

The ATRT-03A is an AC/DC-powered 3-phase, transformer turns-ratio tester. The ATRT-03A can operate from a wide range of voltages and from various power sources including 85 to 264 VAC; 110 to 370 VDC; and 12 VDC (car battery).

1. Highest ratio: 0.8 - 15,000
2. Name-plate turns ratio calculation
3. Computed % error based on measured and calculated ratio
4. Automated phase switching
5. Excitation current and phase angle measuring
6. Computer interface

The Vanguard Instruments Co. Model ATRT-03B is a second generation, microprocessor-based, automatic, three-phase, transformer, turns-ratio meter. The Model ATRT-03B is lightweight, rugged, and portable for use in transformer testing at utility power substations.
The ATRT-03B can store 200 transformer test records in Flash EEPROM. Each test record may contain up to 99 ratio, excitation current, phase angle, and name plate voltage readings. Test records can be recalled and downloaded to an IBM-compatible PC.

The Model RTC is an accessory which is used with the Models ATRT-03, ATRT-03A, and ATRT-03B units. The RTC enables the user to remotely raise or lower a transformer tap by interfacing with the transformer tap-changer controller.

1. A built-in Timer displays contact time in both cycles and milliseconds
2. Provides variable AC current source (up to 250 amps)
3. Provides variable AC voltage source (up to 240 Vac)
4. Provides variable DC voltage source (up to 300 Vdc)
5. 24 Vdc, 124 Vdc, 240 Vac power supplies
6. Built-in power resistors
7. Results displayed on a 4-line by 20-character backlit LCD
8. Test current transformer saturation
9. Test transformer turns ratio
10. Timer triggered by voltage transitions, dry-contact
11. Timer trigger output can trigger other RFD-200 or other external devices

Vanguard's Model RFD-200 Series 2 is a portable test set that delivers performance verification testing of electro-mechanical, electronic, and micro-processor-based protective relays in their operating installations. The Model RFD-200 Series 2 is a rugged test set that provides testing of a variety of protection relays that operate in both indoor and outdoor environments.
The Vanguard RFD-200 Series 2 is very easy to use. Ergonomic design allows intuitive operating choices to be made by first-time users with little or no training.

1. Results displayed on a 4-line by 20-character backlit LCD
2. Test currents from 10 to 600 amperes
3. Also has an external-current input (0-10 A)

The VIC Model PCI-600 is a programmable, high-current source that is designed specifically for utility-substation applications. This alternating current(ac) test device is used primarily for injection testing of protective relays. This same device can also be used for testing thermal, magnetic and solid-state motor-protection relays and molded-case circuit breakers. The PCI-600 is versatile and can also be used in many other applications that
require a high-current source.

1. 100 Amperes DCD Test Current
2. Digital Resistance Reading from 1 micro-ohm to 20 milli-ohms
3. Highly compact, only 17" x 13" x 7"
4. Weighs less than 18 lbs. (8 kg)

The Herculito is a lightweight and compact 100 Amperes DC micro-ohm meter. The meter was designed for testing EHV circuit-breaker contact resistance, bushing contact joints or for any low-resistance measurements. Using the latest switching power supply technology, the Herculito merely weighs 18 lbs (8 kg).

1. 10 to 100 Amperes True Continuous DC Current
2. Automatic control of current rise and fall time
3. Digital Resistance Reading from 1 micro-ohm to 300 milli-ohms
4. Store and Display last 3 Readings
5. Weighs less than 15 lbs.

The Auto-Ohm 100 Series 2 is a microprocessor-based, third-generation, true DC micro-ohmmeter. It is designed for testing EHV circuit-breaker contact resistance, bushing contact joints, or for any low-resistance measurement. The Auto-Ohm 100 Series 2 accurately measures resistances ranging from 1 micro-ohm to 300 milli-ohms.

   Auto-Ohm 200 Series 2

   DMOM-100 Series 2

   DMOM-200 Series 2

   Accu-Ohm 200 Series 2 Portable Micro-Ohmmeter

   ATO-400 Micro-Ohmmeter

   ATO-400P Micro-Ohmmeter

   ATO-600 Micro-Ohmmeter

   ATO-600P Micro-Ohmmeter

   WRM-10 Winding Resistance Ohmmeter

   WRM-10P Winding Resistance Ohmmeter

   WRM-40 Winding Resistance Ohmmeter

1. More accurate than Mechanical-Cycle Counters
2. Far exceeds the power utility industry's requirement for accuracy
3. No Conversion Calculation Required; Timing Results Display in Milliseconds & Cycles
4. Timing Results from all three Timers are shown Simultaneously on a Backlit LCD
5. Backlit LCD for easy data readout in bright sunlight outside or inside
6. Fully analyzes all breaker operation: Open, Close, Open-Close, Close-Open
7. Stores 128 Timing Records
8. Built-in 2.5" Thermal Printer

The CT-3500 is a second generation, stand-alone, digital, microprocessor-controlled, circuit breaker timer. It measures elapsed time from the instant a breaker coil is powered to the instant of opening or closing of a circuit-breaker's dry contacts. The CT-3500 not only times the breaker's contact response time, but it can also time relays or other switching function that uses an initiating-trigger voltage (24-300 Volts dc or ac)

1. Full Breaker Tabulated & Graphic Data Printout
2. Detect Main & Insertion Resistor Contacts on same input
3. Digital Travel Transducer; no setup or calibration needed
4. Diagnostic ability
5. RS-232C and USB computer interfaces
6. Store 100 timing records
7. Initiate Breaker Operation
8. Built-in Thermal Printer

The Model CT-6500 Series 2 is a stand-alone, microcomputer-driven EHV Circuit-Breaker Analyzer. It is inexpensive and easy to use. The CT-6500 is available in models with either 3 dry contacts (CT-6500-3); 6 dry-contacts (CT-6500-6); or 12 dry-contact inputs (CT-6500-12). The CT-6500 fully analyzes circuit-breaker performance: contact time, stroke, velocity, over-travel, and contact wipe. Contactmotion analysis includes: Open, Close, Open-Close, Close-Open, and Open-Close-Open. The CT-6500 timing window is selectable: 1-second, 10-second, or 20-second periods. The 10 and 20-second timing windows allow timing the long duration events (Circuit-Switcher contacts).

1. Stand-alone, microcomputer-driven EHV Circuit Breaker Analyzer
2. Analyzes contact time, stroke, velocity, over-travel, and contact wipe.
3. Computer Interface; 200-Shot EEPROM Storage
4. Diagnostic ability
5. Up to 45 breaker test plans can be stored
6. Built-in Thermal Printer

The VIC-DigiTimr is a stand-alone, microcomputer-driven EHV Circuit-Breaker Analyzer. It is inexpensive and easy to use. The VIC-DigiTimr fully analyzes circuit-breaker performance: contact time, stroke, velocity, over-travel, and contact wipe. Contact-motion analysis includes: Open, Close, Open-Close, Close-Open, and Open-Close-Open. The VIC-DigiTimer timing window is selectable: 1-second, 10-second, or 20-second periods.

1. Full Breaker Tabulated & Graphic Data Printout
2. Detect Main & Insertion Resistor Contacts on same input
3. Digital Travel Transducer; no setup or calibration needed
4. Diagnostic ability
5. USB and RS-232C computer interfaces
6. Store 100 timing records and 99 test plans
7. Initiate Breaker Operation
8. Built-in Thermal Printer

The Model CT-7000 Series 2 is a third generation, stand-alone, microcomputer-driven EHV Circuit-Breaker Analyzer. It is inexpensive and easy to use. The CT-7000 is available in models with 3 dry contacts (CT7000-3), 6 dry contacts (CT-7000-6), or 12 dry-contact inputs (CT-7000-12). The CT-7000 fully analyzes circuit-breaker performance: contact time, stroke, velocity, over-travel, and contact wipe. Contact-motion analysis includes: Open, Close, Open-Close, Close-Open, and Open-Close-Open. The CT-7000 timing window is selectable: 1-second, 10-second, or 20-second periods. The 10-second and 20-second timing windows allow timing of long duration events (Circuit-Switcher contacts).

1. On-Line Timing
2. Capture First Trip Time
3. Full Breaker Tabulated & Graphic Data Printout
4. Built-in Thermal Printer
5. Initiate Breaker Operation
6. Digital Travel Transducer; No Setup or Calibration Required
7. Support resistor type transducer
8. Detect Main Contact and Insertion Resistor Contact on the Same Input Channel
9. Store 100 records and 99 test plans
10. USB and RS-232C computer interfaces
11. Diagnostic Capabilities

The Model CT-7500 Series 2 is a stand-alone, microcomputer-driven EHV Circuit-Breaker Analyzer. Its inexpensive and easy to use. It operates in either of two modes: as a traditional Time-vs-Travel analyzer or as a Quick-Shot (on-line timing). In the Time-Travel mode, the CT-7500 analyzes breaker performance: contact time, stroke, velocity, over-travel, and wipe. Contact-motion analysis includes: Open, Close, Open-Close, Close-Open, and Open-Close-Open. The timing window is selectable: 1-second, 10-second, or 20-second periods. The 10-second and 20-second windows allow timing of long-duration events (e.g., circuit-switcher contacts).

1. On-Line Timing
2. Capture First Trip Time
3. Static & Dynamic Resistance Tests
4. Full Breaker Tabulated & Graphic Data Printout
5. Output Test Results to Built-in Thermal Printer
6. Digital Travel Transducer; No Setup or Calibration Required
7. Supports Resistance Type Transducers
8. Detect Main Contact and Insertion Resistor Contact on the Same Input Channel
9. Store 100 records and 99 test plans
10. Computer Interface (RS-232C or USB)

The Model CT-8000™ EHV Circuit-Breaker Analyzer is a fifth-generation design configuration. The Model CT-8000 is a standalone, microcomputer-controlled Circuit-Breaker Analyzer that is inexpensive and easy to use. It operates in either of two modes: As a traditional Time-vs-Travel analyzer or as a Quick-Shot (on-line timing). The CT-8000 is available with either 3 dry contacts (CT-8000-3) or 6 dry contacts (CT-8000-6) configurations. Both models are supplied with 3 digital travel transducer input channels.

1. Built-in OPEN and CLOSE solid-state initiate circuit
2. All DC outputs are over-current protected

The Model CBPS-300 is a microprocessor-controlled, variable-voltage, DC power supply. It is designed to replace substation batteries during circuit breaker testing. The CBPS-300 provides a ripple-free, DC power source to operate utility circuit breakers for contact-timing and other breaker-testing operations.

1. Isolated variable 1-300 Vdc source
2. Isolated variable 1-240 Vac source
3. 10 ampere continuous current

The Vanguard Universal Power Supply Series 2 (UPS-S2) is designed and produced to meet a utility company's substation needs for an independent AC/DC power source. Both the AC and DC Voltage sources are capable of supplying 10 amperes continuously.
The variable DC power supply (1-300 Vdc) is ideal for use as a substitute primary power source when station batteries are not available. The UPSS2 is ideal for operating circuit breakers, powering substation relays or for unregulated charging of substation batteries. The AC power supply is a variable isolated power source (1-240 Vac) that can be used to power other equipment in the substation.