Primary Current Injector

By Author: millin lange
Total Articles: 10
Comment this article

This device is a portable, high-current source designed specifically for utility-substation applications. This alternating current (AC) test device is used primarily for injection testing of protective relays. The same device can also be used for testing thermal, magnetic and solid-state motor-protection relays, and molded case circuit breakers. The tester is versatile and can be used in many other applications that may require a high-current source. The device has the following features: One variable AC current source (0-600A).One internal current meter (range from 1 to 999 A).One built-in digital timer displays tested timing results in both milliseconds and cycles. An external current meter (input range from 0 to 10A) is also available to the user. Test results display on a 4-line by 20-character, back lighted LCD. The front panel control arrangement is designed to allow a user to intuitively operate the device with a minimum of training.

The device controls and displays are shown in the control-panel illustration Pointing leader lines reference each item with an index number. Each index number is cross-referenced ...
... to a functional description, which describes the function and purpose of each item on the control panel. Although the purpose of these controls and the display may seem obvious and intuitive, users should become familiar with them before attempting to use the PCI-600. First-time users should also review and become familiar with the Safety Summary on the front page.

PCI-600 AC Current Source
AC tests current, from 10A to 600A, are set by the “Current Control” knob on the front panel. The test current is measured and displayed on the LCD. The PCI-600 output current ratings are shown in next table

Table 3.0 Current Output vs Time

Output @ 120 Vac - Output @ 240 Vac - Time

5.6 Vac @ 100 A - 9.5 Vac @ 100 A - 1 hour

5.3 Vac @ 200 A - 9.4 Vac @ 200 A - 5 minutes

4.9 Vac @ 300 A - 9.0 Vac @ 300 A - 2 minutes

4.6 Vac @ 400 A - 8.2 Vac @ 400 A - 1 minute

4.2 Vac @ 500 A - 7.5 Vac @ 500 A - 30 seconds

3.9 Vac @ 600 A - 7.0 Vac @ 600 A - 20 seconds

PCI-600 Current Output Control

The PCI-600 current source output is controlled by the “UP” and “DOWN” arrows shown in Figure 2.0. Three control modes are available: “ON+TMR”,“OFF” and MONT”.The “OFF” mode indicates that both the current source output and timer are off.The “MONT” mode turns on the current source momentarily. To turn on the current source, press and hold the “DOWN” arrow key. The “MONT” indicator indicates the PCI-600current source is on and the output current is displayed on the LCD. The PCI-600 current output can now be set by turning the “CURRENT CONTROL” knob. Release the “DOWN”arrow key to turn off the current source. The “ON+TMR” mode turns on the PCI-600 current source and timer. This initiates a test and is stopped by using the Timer Stop inputs. The test results will be displayed on the LCD. The test can be terminated by pressing the “DOWN” arrow key. In this case, no test results will be displayed on the LCD.

The company which manufactures electrical equipment for measurement and maintenance of electrical substations offers customers reliable equipment. We have a wide range of products like ultrasonic leak detector, power analyzers, relay tester, transformer test equipment or test equipment for relays. For further information about circuit breaker tester, please visit us online.