Privacy policies

GDPR data Terms of use Cookies policy Privacy policy Delivery and Payment How to order?
I agree with terms and conditions Continue
 
office@distek.ro  +40 760952425   Ask price (0) 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


Molded Case Circuit Breaker Tester Vanguard MCCB-250

Code: Vanguard MCCB-250


 
Datasheet PDF, 0.35 Mb
   

Description

  • 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.

 

Standard accessories

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

 

More products VANGUARD

DIGITAL CIRCUIT BREAKER ANALYZER 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

 
LOAD TAP CHANGER ANALYZER AND WINDING RESISTANCE ANALYZER 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.

 
CURRENT TRANSFORMER TEST SET TURN RATIO, EXCITATION, SATURATION, POLARITY 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

 
THREE-PHASE TRANSFORMER WINDING RESISTANCE METER VANGUARD TRM-20

• 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

 
WINDING RESISTANCE OHMMETER FOR TESTING HIGH POWER INDUCTIVE TRANSFORMERS VANGUARD WRM-10P

• Range from 1 micro-ohm to 2,000 ohm
• Up to 10 Amperes of test current
• Auto discharge circuit for operator safety
• Built-in 2.5" Thermal Printer, computer interface
• Stores 48 records of 63 readings
• Weighs less than 27 lbs.

 
CAPACITIVE VOLTAGE TRANSFORMER TURN RATIO TESTER VANGUARD CVT-765

• Standalone or computer-controlled
• Can test CVT's rated up to 765 KV
• Displays turns-ratios from 75-15,000
• Calculates turns-ratio percentage error when nameplate voltages are provided

 
DIGITAL BREAKER ANALYZER FOR CONTACT & SWITCH TIMING VANGUARD CT-7000

• dry-contact inputs: 3 channels (9021-UC) or 6 channels (9100-UC)
• timing windows: 1 second, 10 seconds, or 20 seconds
• timing resolutions ±50 micro-seconds @ 1 sec. duration, ±500 micro-seconds @ 10 sec. duration, ±1.0 milli-seconds @ 20 sec. duration
• breaker operations: Initiate Open, Close, Open-Close, Close-Open, Open-Close-Open
• 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
• USB Flash drive interface (Flash drive not included)
• Built-in 4.5" wide Thermal Printer

 
THREE-PHASE TRANSFORMER WINDING RESISTANCE METER VANGUARD TRM-20

• 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

 
TRANSFORMER WINDING RESISTANCE METER 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

 
DIGITAL BREAKER ANALYZER FOR CONTACT & SWITCH TIMING VANGUARD CT-3500

• Dry-contact inputs: 3 channels
• Trigger input voltage open/close: 30 ¬ 300 V, DC or peak AC
• Breaker operations: Open, Close, Open-Close, Close-Open
• Timing resolution: ±0.1 millisecond
• Detect Main & Insertion Resistor Contacts on same input
• USB computer interface
• Built-in 2.5" wide Thermal Printer