General caution of DC Power Supplies | Tech

Published: 2020-03-06, M.P. / Updated: 2026-02-26, T.N.

Wiring and Operation

Connection of load

Use short, heavy-gauge lead wires for the connection.
Please use PVC electric cable (105°C) that can fully tolerate the voltage used. IUse cables with sufficient current-carrying capacity. If using remote sensing, ensure the voltage drop across the load wires does not exceed the sensing compensation limit (typically 0.5 V per lead).

Table1: American wire gauge cable/conductor and maximum current
AWG	mm²	Max current (A)
18	0.823	2.3
16	1.31	3.7
14	2.08	5.9
12	3.31	9.3
10	5.26	15
8	8.37	24
6	13.3	37
4	21.1	60
2	33.6	94
1	42.4	119
1/0	53.5	150
2/0	67.4	190
3/0	85.0	239
4/0	107	302

Use several cables or copper bars for models over 302 A.

Parallel connection of load

Good

Bad

A bad example is connecting the power supply output to a load, which then connects to the next load.

A bad example of wiring is when the power supply output is branched off midway and connected to each load.

Wiring Configuration: Avoid daisy-chaining loads, as this can increase voltage drop and interference. Connect each load directly to the power supply output terminals (star connection) or use a low-impedance bus bar.

Specifications Definitions

Unless otherwise specified in the product datasheet or manual, the following definitions apply. Specifications represent values at rated output (full scale) after a two-hour warm-up period. The specification in this brochure indicates the value at rated power output (full scale) shown after a two-hour warm-up.

Scope of Specifications

The following specifications are applied within a range of 10 to 100% of the rated output.

Ripple
Stability
Regulations
Temperature coefficient
Linearity of output
Linearity of monitor
Linearity of indications

Ripple

Ripple values are measured in rms and include high-frequency noise components.

Preset

Preset values are approximate. For precise settings, enable the output and measure it directly. Preset values are approximate. For precise voltage settings, measure the output with a calibrated meter under no-load conditions. To set the current limit accurately, short the output terminals and adjust the current setting to the desired value while monitoring the output.