PR201 Power Monitors (Přerušena)

Approximately 5 VDC.

We have a new version of the PR970 that supports Windows 7. You'll need to purchase that one.

Yes. Any measurement element can be assigned to any of the three displays (upper, middle or lower). Specified phases of voltage and current can also be assigned, and you can scroll the displays through the phases with the SEL key.

The PR300's demand measurement function measures average power or current within a specified time limit. It also measures the maximum value during the period of demand measurement. When a specified demand alarm point is exceeded, an alarm is outp...

Check the active power. If the active power turns negative or extremely small, check the items below. The active power is negative when the power is regenerating. Items to check Is the CT attachment orientation correct? Is a CT connected to th...

For low and high voltage measurement it is a D type ground, and for especially high voltage measurement it's an A type ground. (Use in combination with a Yokogawa power monitor. Note that the CTW series current converters are for low voltages.) ...

Generally, when measuring high voltage and high current transformer signals, you use a VT (voltage transformer) and CT (current transformer). The ratios between the primary and secondary rated voltages and rated currents are the VT and CT ratios. For...

For each power monitor, normally you use 1 to 3 CTs. Single phase 2-wire = 1 CT; single-phase three-wire = 2 CTs; three-phase three-wire = 2 CTs, and three-phase four-wire = 3 CTs.

For power monitors, you need to set up CT and VT ratios. (In the case of the PR300 power monitor, phase, wiring method, voltage range, and other settings are required in advance.) However, even when you enter these settings, there are times when the ...