Socket to connect an external booster, for example, the CP CB2 current booster for output currents of up to 2000 A.
Enable any external booster in the CPC 100 software on the tab Options | Device Setup (refer to
”Device Setup” on page 56 of this chapter).
DANGER
Death or severe injury caused by high voltage or current
The Ext. Booster connector is always galvanically connected to mains.
This also applies when no external booster is selected, the green status light (0) is on, the outputs are turned off or the Emergency Stop button is pressed.
► Handle the Ext. Booster connector with extreme caution.
► Do not use any other booster cables than the ones supplied by OMICRON.
► Do not use booster cables that are frayed or damaged in any way.
2.2 CPC 100 block diagram (simplified)
Figure 2-12: Simplified block diagram of the CPC 100
+
Rectifier
& power factor corrector
Filter
Switched mode amplifier
500V 4A 1kV 2A 2kV 1A 500V
500V 500V 500V
65V 65V
3.15A
ADC 6.3A
I U
U U
U I
DSP I
(Digital Signal Processor)
Built-in ePC
Ethernet RS 232 optional
optional interfaces (plug-in boards)analog or digital
2kV 800A
R
R
- + 5V / 400A DC
10A AC/DC 3V AC 300V AC
10V DC BIN IN 65V / 6A DC
6V / 800A AC 2kV Ext.
Booster
130V / 6A AC
Mains 100-240V
50/60Hz
to ext.
PC
I
n p.
O u t p u t s
L
N PE
2.3 Built-in ePC
The built-in ePC of the CPC 100 runs under Microsoft Windows CE operating system and provides front panel control.
This section provides a brief overview of the front panel control components.
Section ”How to use the CPC 100 software” on page 40 of this chapter describes in detail how to work with the front panel control components, how to set up a test, execute it and save it for later use.
Via the built-in ePC, the CPC 100 can be accessed from a stand-alone PC, for example, a notebook, via a PC network and via the Internet (refer to ”CPC 100 in a network” in chapter 11).
Figure 2-13: The CPC 100’s built-in ePC, components overview LCD monitor
The monitor is a high-contrast gray-scale graphical LCD display with a resolution of 320x240 pixels.
Accelerator keys
Add the test card of your choice, for example, Quick, CT, VT... etc. (refer to ”Accelerator keys” on page 44 of this chapter).
View selector
Lets you select the view of your choice, for example, Test Card View, Test Procedure Overview, File
Accelerator keys
Soft-touch keyboard
Jog-dial handwheel Up/Down keys
Test Start/Stop Tab selector Context-dependent menu keys
View selector LCD monitor
In "data entry" mode, that is, if the focus is set onto a data entry field or a combo box, and the handwheel was pressed to "enter" the field and to enable data entry, turning the handwheel increases/decreases the entry field’s value or browses through the preset values of the combo box, respectively.
Pressing the handwheel corresponds to the Enter function of the soft-touch keyboard.
Furthermore, the wheel comprises an adaptive acceleration function, that is, if the focus is, for example, set onto a data entry field, fast turning increments/decrements a value in increasingly bigger steps, slow turning in decreasingly smaller steps.
Up/Down keys
Soft-touch keys supplementing the handwheel. Depending on the current focus in the software user interface, pressing these keys either navigates through the UI elements within one test card, or - if in a data entry field, for example - increments/decrements a value.
Contrary to the handwheel, the Up/Down keys change a value in fixed coarse increments /decrements in order to ease a quick approximation to the end value. The fine adjustment is then done with the handwheel.
Context-dependent menu keys
Soft-touch keys that directly invoke specific commands associated with the currently selected control of the test card and view.
Since their actual functions depend on the selected view, test mode, test card and selected UI element, the menu keys do not hold any specific text. The individual key function is displayed on the monitor with a labelled button symbol right next to the menu key.
I/O (test start/stop)
If the test parameters are set in the software’s Test Card View, the Emergency Stop button is released and the key lock is set to the "unlocked" position, pressing this push-button enables the CPC 100 outputs and starts a test.
Pressing this push-button a second time stops the test.
Tab selector
If a test procedure comprises more than one test card, use these keys to change between the single test cards.
WARNING
Death or severe injury caused by high voltage or current possible
Stopping a test does not shut off theCPC 100 outputs instantaneously. First, the currently running test sequence finishes, then the test execution is stopped.
Most test cards finish the running test sequence with a predefined ramp function.
► Therefore, in a hazardous situation never press "Stop Test".
► Instead, use Emergency Stop.
2.4 How to use the CPC 100 software
Information about the software version of your CPC 100 can be found at the Options tab System Info (refer to ”System Info” on page 66 of this chapter).
This section provides an overview of the front panel control components, explains in detail how to navigate with them through the software, how to set up a test, execute it, save it for later use, etc.
Note:The subsequent chapters (Quick, CT, VT, Resistance, Transformer...), explaining the various test procedures from a more practice-orientated point of view, are confined to test-relevant issues, and assume that you have read and understood this section.
2.4.1 The principles of test cards and test procedures Test cards
The CPC 100 software comprises a number of test cards. A test card carries out one specific test, for example, measuring a CT excitation curve, or testing the ratio of a voltage transformer.
A test card holds a number of user-definable test settings and - after the test was run - test results.