Schneider Electric PowerLogic PM5300 Series Dokumentacja Pobierz pdf (Strona 28)

Power Meter 750 63230-507-201

Section 5—Input/Output Capabilities 03/2007

Calculating the Kilowatt-hour- Per-Pulse

Value

This section shows an example of how to calculate kilowatt-hours per pulse.

To calculate this value, first determine the highest kW value you can expect

and the required pulse rate. In this example, the following assumptions are

made:

• The metered load should not exceed 1600 kW.

• About two KY pulses per second should occur at full scale.

Step 1: Convert 1600 kW load into kWh/second.

Step 2: Calculate the kWh required per pulse.

Step 3: Round to the next option (0.01, 0.1, 1, 10, 100, 1000, 10,000).

(1600 kW)(1 Hr) 1600 KWh=

(1600 kWh)

1 hour

-------------------------------

X kWh

1 second

------------------------=

(1600 kWh)

3600 seconds

--------------------------------

X kWh

1 second

---------------------=

X 1600/3600 0.444 kWh/second==

0.444 kWh/second

2 pulses/second

--------------------------------------------- 0.2222 kWh/pulse=

Ke 1 kWh/pulse=

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 67 68

Brak uwag

Schneider Electric PowerLogic PM5300 Series Dokumentacja Strona 28