Analizor intrerupatoare cu carcasa turnata si relee protectie suprasarcina motor Vanguard MCCB-250

Cod: Vanguard MCCB-250

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Descriere

250 Ampere current source
4 current-source outputs (i.e., 5 A @ 120 Vac, 25 A @ 24 Vac, 120 A @ 6 Vac, 250 A @ 3 Vac)
4-line by 20-character LCD display
Provides external current input (0-10 A)

The Vanguard MCCB-250 is a programmable, high-current source designed specifically for testing molded-case circuit breakers, thermal magnetic and solid-state overload motor-protection relays.

Built-in Timer

The MCCB-250’s built-in timer can test the

time-delay characteristics of protection relays

and molded-case circuit breakers. Once

the test is initiated, the current source and the

timer are automatically turned on at the next

zero-crossing point of the AC. The timer stops

when the MCCB-250 input detects a change

in the dry contact or voltage input, or detects

the removal of the test current. The test results

are then displayed in milliseconds and

fractions of cycle(s) on the unit’s back-lit LCD

screen (20 characters by 4 lines).

Current Source

The MCCB-250 has 4 current-source outputs

(5 A @ 120 Vac, 25 A @ 24 Vac, 120 A @ 6

Vac, 250 A @ 3 Vac) that conduct the test

current through the high-impedance load circuits.

Each current source can tolerate shortduration

over-loads up to 4 times the rated

current (1000 A max). This feature is used

for testing the instantaneous trip element of

molded-case circuit breakers. When using

this feature, the selected test current is displayed

on the LCD screen. When the MCCB-

250 is used as a current source, the currentfl

ow time (the current-on period) is displayed

External Current Input on the LCD screen.

The MCCB-250 also provides an external current

input (0 - 10 A). Both internal and external

current source readings can be viewed at

the same time.

Accesorii standard

Part number MCCB-250 MCCB-250 and cables

Part number MCCB-250-CASE MCCB-250 shipping case

Part number MCCB-250-10FT MCCB-250 test leads - 10 foot

Part number MCCB-250-20FT MCCB-250 test leads - 20 foot

Alte produse VANGUARD

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

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

ANALIZOR CIRCUITE INTRERUPATOARE INALTA TENSIUNE VANGUARD DIGITMR PC

• dry-contact inputs 3 dry-contact channels
• timing windows 1 second, 10 seconds, or 20 seconds
• timing resolutions ±50 micro-seconds @ 1 sec. duration
• Inexpensive, PC-controlled EHV circuit breaker analyzer
• Optional "on-line" timing mode
• Small and light-weight
• Can test contact time, stroke, velocity, over-travel, and contact wipe

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

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

TESTER REZISTENTA INFASURARE TRANSFORMATOR TRIFAZAT VANGUARD TRM-203

• accurately measure resistance from 1 micro-ohm to 2000 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 20A
• Computer control via RS-232C, USB, or Bluetooth interface
• Built-in 2.5" wide thermal printer

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

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, EXCITATIE, SATURATIE, POLARITATE VANGUARD EZCT-2000A

• Perform Saturation, Ratio and Polarity Tests
• Perform CT Winding Resistance Test
• Fully Automated
• Test record header information including company, substation name, circuit ID, manufacturer, CT serial number, operator name, and test record-comments
• Plot Multiple Saturation Curves
• Store 140 Records (of 10 Saturation Curves)
• Computer Interface
• USB Flash drive interface

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