Keysight Technologies N69100 Series, Руководство по эксплуатации и обслуживанию

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Wire Size
FIRE HAZARD To satisfy safety requirements, load wires must be large enough not to
overheat when carrying the maximum short-circuit output current. If there is more than
one load, then any pair of load wires must be capable of safely carrying the full-rated
current of the unit. Paralleled load wires may be required for larger-ampacity models.
The following table lists the characteristics of AWG (American Wire Gauge) copper wire.
AWG Equivalent mm2 Nearest Metric size Ampacity (Note 1) Resistance (Note 2)
18 0.82 1.0 mm2 up to 14 A 6.385 Ω
16 1.31 1.5 mm2 up to 18 A 4.016 Ω
14 2.1 2.5 mm2 up to 25 A 2.525 Ω
12 3.3 4 mm2 up to 30 A 1.588 Ω
10 5.3 6 mm2 up to 40 A 0.999 Ω
8 8.4 10 mm2 up to 60 A 0.628 Ω
6 13.3 16 mm2 up to 80 A 0.395 Ω
4 21.2 25 mm2 up to 105 A 0.248 Ω
2 33.6 35 mm2 up to 140 A 0.156 Ω
1/0 53.5 50 mm2 up to 195 A 0.098 Ω
2/0 67.4 70 mm2 up to 225 A 0.078 Ω
3/0 85 95 mm2 up to 260 A 0.062 Ω
4/0 107 120 mm2 up to 300 A 0.049 Ω
6.2/0 (350 MCM) 177 185 mm2 up to 420 A N/A
Note 1 Ampacity is based on a single conductor in free air, 26-30 °C ambient temperature with the conductor rated at 60 °C. Ampacity
decreases at higher temperatures.
Note 2 Resistance is in ohms/1000 feet, at 20 °C wire temperature.
Along with ampacity, you must also consider voltage drop in the load lead due to wire resistance
sizing wires. The power supply will tolerate a voltage drop of 1 V per lead while maintaining the
specified programming accuracy, measurement accuracy, and load regulation (see
specifications ).
Voltage drops of up to 25% of the rated output voltage per lead will be tolerated - resulting in an
additional 4 mV of voltage regulation for each additional volt dropped per load lead. Of course, any
voltage drop in the load leads reduces the maximum voltage available at the load. Subtract the load
lead drop from the rated output voltage to determine the maximum voltage available at the load.
Single Load Connections
1. As shown in the following figure, terminate all load wires with wire terminal lugs securely
attached. DO NOT use unterminated wires for load connections at the power supply.
Keysight N69100 Series Operating and Service Guide 63
2 Installing the Instrument