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Trusa testare transformatoare de curent digitala portabila Vanguard EZCT-10

Cod: Vanguard EZCT-10


 
Brosura produs PDF, 0.79 Mb
       

Descriere

  • measurement method ANSI/IEEE C57.12.90, IEC 60044-1 and ANSI/IEEE C57.13.1
  • output test voltages 0..50 Vac @ 10A max; 0 - 200 Vac @ 10A max; 0 - 1200 Vac @ 1.5A max (5 min on, 10 min off)
  • voltage reading range 0..1,250 Vac
  • current reading range 0..10A
  • current ratio range 0.8..99: ±0.5%, 100..999: ±1.0%, 1,000..5,000: ±2%
  • phase angle measurement 0..360 degrees
  • Perform Saturation, Ratio and Polarity Tests
  • Fully Automated
  • Comprehensive Graphic and Tabulated Test Reports
  • Plot Multiple Saturation Curves
  • Store 64 Records (of 10 Saturation Curves)
  • Computer Interface & pc software

 

The Model EZCT-10 is a microprocessor-based, current-transformer test set. This rugged and portable test set measures excitation current, turns ratio and winding polarity on single- and multi-ratio current transformers. Current transformers can be tested in their field-mounted configuration, eliminating the need to remove bushings or current transformers from the host equipment.

The EZCT-10 uses a heavy-duty transformer to perform the CT excitation test. It is capable

of outputting 50 Vac at 10A and 200 Vac at 10A.

 

 

Excitation Test

The CT excitation test is performed using the

ANSI/IEEE C57.13.1, IEC 60044-1 test method.

The EZCT-10 applies an AC variable test voltage

(up to 1,200 Vac) to the CT’s secondary windings.

The EZCT-10 records and displays the test

voltage and excitation current applied to the

current transformer during the excitation test.

Once tests are completed, up to 10 excitation

curves and knee-point voltages of the tests can

be plotted on the built-in thermal printer. IEEE-

30, IEEE-45, ANSI/IEC 60044-1 (10/50) knee

point voltages are also calculated and printed

on the test report.

 

User Interface

The EZCT-10 features a back-lit LCD screen (4

lines by 20 characters) that is viewable in both

bright sunlight and low-light levels. A rugged,

alpha-numeric, membrane keypad is used to

enter test information and to control the unit’s

functions, and a voltage control knob is used to

control the variable test voltage output. The test

voltage range (50V at 10A, 200V at 10A, 1,200V

at 1.5A) is selected with a switch on the control

panel.

 

Built-in Thermal Printer

A built-in 4.5-inch wide thermal printer can print

the current transformer test report and plot the

excitation curves.

 

CT Ratio and Polarity

Tests

The EZCT-10 determines the CT current-ratio

using the ANSI/IEEE C57.12.90 measurement

method. A test voltage is applied on the CT’s

X terminals and the induced voltage is measured

across the CT’s H1 and H2 terminals. The

current-ratio is displayed on the screen and

stored in memory. The current-ratio measuring

range is from 0.8 to 5,000. Winding polarity is

displayed as a "+" sign (in-phase) or "-" sign

(out-of-phase) and is annotated with the phase

angle in degrees.

 

 

Internal Test Record Storage

The EZCT-10 can store up to 128 current-transformer

test records in Flash EEPROM. Each test

record may contain up to 10 excitation curves,

polarity, and current-ratio test data sets. Test records

can be recalled and printed on the built-in

thermal printer.

 

Computer Interface

The EZCT-10 can be used as a stand-alone unit

or can be computer-controlled via the built-in

RS-232C or USB interfaces. Windows®-based

Current Transformer Analysis software is provided

with each EZCT-10. This software can be

used to retrieve test records from the EZCT-10

and can also be used to run CT tests from the

PC. Tabulated test records can be exported in

PDF, Excel, and XML formats for further analysis.

 

Accesorii standard

Part number EZCT-10 EZCT-10, cables, and PC software

Part number EZCT-10-CASE EZCT-10 shipping case

Part number Paper-TP4 thermal printer paper

 

Alte produse VANGUARD

MICROHMMETRU REZISTENTE CONTACT INTRERUPATOARE 200A VANGUARD DMOM-200 S3

• 1 to 200A programmable test current
• Resitance range: 1µ?..10m? at 200A to 1µ?..5? at 1A
• Very lightweight: 19.8 lbs. (8.9 Kg)
• 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

 
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

 
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

 
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

 
ANALIZOR INTRERUPATOARE TIMPI SI REZISTENTA DE CONTACT COMUTATOARE VANGUARD CT-8000

• dry-contact inputs 3 channels (9103-UC) or 6 channels (9104-UC)
• timing windows 1 second, 10 seconds, or 20 seconds
• timing resolutions ±50 micro-seconds @ 1 sec. duration
• Fully analyze circuit breaker's performance
• measuring main contact and resistor contact time, stroke, velocity, over-travel, bounce back and contact wipes
• USB computer interface
• Built-in 4.5" wide Thermal Printer

 
MICROOHMMETRU AUTOMATIC REZISTENTE DE CONTACT INTRERUPATOARE 200A VANGUARD AUTO-OHM 200 S3

• 1 to 200A programmable test current
• Resitance range: 1µ?..10m? at 200A to 1µ?..5? at 1A
• Very lightweight: 16.8 lbs. (7.6 Kg)
• 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
• Rugged, 44-key "QWERTY" membrane keypad
• Windows XP/Vista/7 Analysis Software (included with purchase)

 
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

 
TRUSA TESTARE TRANSFORMATOARE DE CURENT DIGITALA PORTABILA VANGUARD EZCT-10

• measurement method ANSI/IEEE C57.12.90, IEC 60044-1 and ANSI/IEEE C57.13.1
• output test voltages 0..50 Vac @ 10A max; 0 - 200 Vac @ 10A max; 0 - 1200 Vac @ 1.5A max (5 min on, 10 min off)
• voltage reading range 0..1,250 Vac
• current ratio range 0.8..99: ±0.5%, 100..999: ±1.0%, 1,000..5,000: ±2%
• phase angle measurement 0..360 degrees
• Perform Saturation, Ratio and Polarity Tests
• Fully Automated
• Comprehensive Graphic and Tabulated Test Reports
• Plot Multiple Saturation Curves
• Computer Interface & pc software

 
ANALIZOR COMUTATOARE PLOTURI IN SARCINA SI REZISTENTA INFASURARI TRANSFORMATOARE VANGUARD LTCA-10

• Auto discharge circuit for operator safety
• 3 resistance reading channels including one dynamic channel
• Digital resistance reading from 1 micro-ohm to 500 ohms
• Calculate equivalent resistance value at reference temperature
• Stores 50 static records and 20 dynamic records
• Built-in 4.5-inch thermal printer
• Weighs less than 44 lbs.

 
TESTER AUTOMAT RAPORT DE TRANSFORMARE TRANSFORMATOARE TRIFAZATE VANGUARD ATRT-03

• Highest ratio: 0.8 - 15,000
• Built-in 4.5" thermal printer
• Excitation current measuring
• Phase angle measuring
• Computer interface
• Name-plate turns ratio calculation
• Computed % error based on measured and calculated ratio