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Tester rezistente infasuratori transformatoare trifazate Vanguard TRM-403

Cod: Vanguard TRM-403


 
Brosura produs PDF, 0.74 Mb
   

Descriere

  • accurately measure resistance from 1 micro-ohm to 500 Ohms
  • Perform three phase test on a transformer without the need to switch cables
  • Can provide individual Delta winding resistance values
  • Can provide individual Wye (with no neutral) winding resistance values
  • Demagnetize transformer after test
  • Selectable test current from 1A to 40A
  • Computer control via RS-232C, USB, or Bluetooth interface
  • Built-in 2.5" wide thermal printer

 

The TRM-403 is a  three phase transformer winding resistance meter that allow the user to connect all test cables to the transformer bushings. The unit will then measure the transformer resistance value for each of the phases without the need to disconnect and reconnect cables for each phase. The TRM-403 can provide a fast and stable reading of very large transformers by utilizing a 60Vdc power supply. It is capable of outputting a selectable test current from 1A to 40A. Since the TRM-403 can accurately measure resistance from 1 micro-ohm to 500 Ohms, it can be used as a micro-ohm meter to measure EHV circuit breaker contact resistance, or for any low resistance measuring application

 

For a Delta transformer, the TRM-203/403 can

measure the phase resistance readings and

provide the individual Delta winding resistance

values. The TRM-203/403 can also provide the

individual winding resistance values for a Wye

transformer without the neutral terminal.

If the transformer winding resistance temperature

is available at the time of testing, the TRM-

203/403 can calculate the equivalent resistance

value at any temperature value. This useful feature

can be used to compare the fi eld readings

against the factory test resistance values.

The TRM-203/403 can perform a special test to

collect data automatically for up to 90 minutes

(at 60-second sampling intervals) or 45 minutes

(at 30 second sampling intervals). The test data

is recorded with a time stamp.

All test results can be printed on the unit’s builtin

2.5" wide thermal printer. Test record header

information including the Company, substation

name, transformer information, and operator information

can also be entered using the rugged,

44-key "QWERTY"-style membrane keypad.

The TRM-203/403 can automatically demagnetize

the inductive device under test, eliminating

the manual task of demagnetizing the transformer

core after a resistance test.

The TRM-203/403 also has a "make-beforebreak"

test mode that can be used to test the

Load Tap Changer (LTC) or Voltage Regulator

contact test sequence. The TRM-203/403 produces

a "Dynamic-Resistance" graph of the LTC

or Voltage regulator contact under operation. An

opened contact can be detected visually from

this resistance chart.

The TRM’s built-in LTC/Voltage regulator can be

used to conveniently change the LTC/voltage

regulator tap position from the TRM-203/403

front panel.

 

Accesorii standard

ordering information

Part number TRM-203 TRM-203, cables, software

Part number TRM-403 TRM-403, cables, software

Part number TP3 2.5-inch wide thermal printer paper

 

Alte produse VANGUARD

TESTER AUTOMAT RAPORT TRANSFORMARE TRANSFORMATOR TRIFAZIC TRIPOLAR VANGUARD ATRT-03A

• Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards plus phase shifting transformers
• Store up to 128 transformer test-plans in Flash EEPROM
• Store up to 112 test records in Flash EEPROM
• Built-in USB Flash Drive Interface
• Computer Interface (RS-232C and USB Port)
• 4.5 Inch thermal printer
• Built-in transformer load tap changer

 
TRUSA TESTARE TRANSFORMATOARE DE CURENT, RAPORT TRANSFORMARE, CURBA EXCITATIE, GRAFIC SATURATIE VANGUARD EZCT-2000C PLUS

• Performs CT excitation, current-ratio, polarity, and phase angle tests
• Measures insulation resistance and winding resistance of the CT seconday windings
• Measures the CT's secondary burden
• Test record header information including company, substation name, circuit ID, manufacturer, CT serial number, operator name, and test record-comments
• Built-in 4.5-inch wide thermal printer
• Plot Multiple Saturation Curves
• Stores up to 128 CT test plans and 140 test records internally
• USB, Bluetooth, and USB Flash drive interface

 
ANALIZOR INTRERUPATOARE STICLA CU VID INALTA TENSIUNE VANGUARD VBT-60 / 80

• Automatic Testing
• 10 kV to 60 / 80 kV DC output in 5 kV steps
• Selectable dwell time from 5 seconds to 2 minutes
• Digital voltage and current display
• Failure indicator lamp
• Very light-weight

 
MICRO-OHMMETRU REZISTENTA CONTACTE TRANSFORMATOR 600A VANGUARD DMOM-600

• 10 to 600A programmable test current
• Resitance range: 1.5m? at 600A to 450m? at 10A
• Measures circuit breaker contact resistance with safety ground on (with the Dual Ground option)
• Stores test records on-board or on external USB Flash drive
• Built-in 2.5" wide thermal printer

 
PUNTE MASURA REZISTENTA INFASURARE TRANSFORMATOR VANGUARD TRM-20

• accurately measure resistance values from 1 micro-ohm to 2,000 Ohms
• Auto-discharge circuit for operator safety
• Demagnetizes transformer after test
• Selectable test current from 1A to 20A
• RS-232C, USB, and Bluetooth computer interfaces
• Built-in thermal printer

 
PUNTE TESTARE REZISTENTE INFASURARI TRANSFORMATOARE VANGUARD TRM-40

• accurately measure resistance values from 1 micro-ohm to 500 Ohms
• Auto-discharge circuit for operator safety
• Demagnetizes transformer after test
• Selectable test current from 1A to 40A
• RS-232C, USB, and Bluetooth computer interfaces
• Built-in thermal printer

 
ANALIZOR CIRCUIT INTRERUPERE INALTA TENSIUNE VANGUARD DIGITMR

• dry-contact inputs 3 dry-contact channels
• timing windows 1 second, 10 seconds, or 20 seconds
• timing resolutions ±50 micro-seconds @ 1 sec. duration
• Stand-alone, microcomputer-driven EHV Circuit Breaker Analyzer
• Analyzes contact time, stroke, velocity, over-travel, and contact wipe
• USB PC interface & USB Flash drive interface
• Built-in thermal printer

 
TRUSA DIGITALA TESTARE RELEE DE PROTECTIE VANGUARD RFD-200

• Timer: 0 to 9.999 sec, 1 ms resolution; 10.00 to 99.99 sec, 10 ms resolution, 100.00 to 999.999 sec, 100 ms resolution
• built-in Timer displays contact time in both cycles and milliseconds
• AC current source with 3 outputs (10A, 40A, 100A)
• AC voltage source for testing relays up to 250 Vac
• DC Voltage source (0 - 300 Vdc)
• Volt meter input (0 - 600 V input range)
• Three power supplies (24 Vdc, 48 Vdc, 124 Vdc)
• Built-in power resistors

 
TESTER MASURARE RAPORT DE TRANSFORMARE TRANSFORMATOARE VANGUARD ATRT-01

• Displays turns-ratio from 0.8-15,000
• Calculates turns-ratio percentage error
• Displays winding polarity and phase angle
• Displays excitation current
• Battery or AC-powered (ATRT-01B S3 only)
• Standalone or computer-controlled

 
SURSA DE PUTERE CURENT 10A AC/DC REGLABILA PENTRU TESTARE INTRERUPATOARE SI RELEE DE PROTECTIE VANGUARD UPS-S2

• Isolated variable 1-300 Vdc source
• Isolated variable 1-240 Vac source
• 10 ampere continuous current