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| | SPECIFICATIONS FOR ALL POWER CELLS FREQUENCY •DC to 1 KHz RESPONSE • 15 Milliseconds (.015 seconds) • .060 seconds to 1 second with optional response adjustment ACCURACY/REPEATABILITY • .5% IMPEDANCE • For 10 Volt output: 2K ohm minimum connected impedance • For 4-20 MA output: 500 ohm maximum connected impedance • High compliance units available TEM PERATURE • 55 C maximum | | DIMENSIONS PH-3A, PH-2A, PH-1A POWER CELLS PH-1000 POWER CELLS EXTERNAL TRANSFORMER (provided with each POWER CELL) | | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| | Maximum conductor 3/4" Maximum conductor 1 3/4" with grommets removed Mounting: (4) 1/4" screws Mounting: (2) #10 screws Mounting: (2) #10 screws, 12 3/4" x 1 1/4" on centers 2" on center 8 1/2: on center Weight: 12 pounds | | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| HOW POWER IS MEASURED AND CALCULATED Three Phase Power P = (E)(I)(Cos )(1.73) P = Power (Watts) I = Current in each phase (Amps) E = Voltage phase to phase (Volts) Cos = Power Factor (Ranges from 0-1) 1.73 = Multiplication factor for three phases = 3 1 HP = 746 Watts | Terminals MUST face load. Terminal 6 MUST be grounded. The output is powered by the power cell. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| HALL EFFECT DEVICES Balanced Hall Effect sensors are used to measure power with odd shapes and frequencies (like on a Variable Frequency Drive). A Hall Effect sensor has these two characteristics: 1. It senses a magnetic field which is proportional to the current flowing through the conductor (I). 2. The Hall Effect semiconductor can multiply two signals. Each Hall Effect Sensor is powered by the signal that comes from the voltage sample for that phase (E). The Hall device multiplies these voltage and current signals. This is a vector multiplication which also calculates-the lag of the current (Cos = Power Factor). The resulting output is then proportional to power (Volts x Amps x Power Factor). | ohi | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| external transformer (provided with each power cell] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 9*m LOAD CONTROLS ^INCORPORATED LOAD CONTROLS - 53 TECHNOLOGY PARK ROAD • STURBRIDGE, MA 01566 • Phone:888-600-3247 Fax:508-347-2064 7-02 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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