ATevo O&SI - 1PH Input Group II (16-100 Adc)

2.5. Making DC Output Connections

Installer is responsible to provide suitable dc output, battery, and dc load wiring.

Guidelines for DC Connections

Follow these steps to connect the battery to ATevo:

  1. Size the dc wiring to minimize voltage drop. Acceptable wire size depends on the installation. As a guideline, voltage drop should not exceed 1% of nominal output voltage at full current. Refer to the following table to determine the voltage drops for various wire sizes, currents and distances.
Wire Sizing Chart
Voltage Drop per 100ft / 30.5m of Wire (for copper at 68 F / 20 C)
Wire Size (AWG) DC Current (Amperes)
30 40 50 75 100
10 3.0V 4.0V 5.0V not recommended not recommended
8 1.9V 2.5V 3.1V not recommended not recommended
6 1.2V 1.6V 2.0V 3.0V not recommended
4 0.7V 1.0V 1.2V 1.9V 2.5V
2 0.5V 0.6V 0.8V 1.2V 1.6V
0 0.3V 0.4V 0.5V 0.7V 1.0V

Example: 100ft / 30.5m of #8 AWG wire at 50A has a 3.1V drop.

  1. ATevo is factory wired to regulate output voltage at the output terminals. If total voltage drop is greater than 1% (e.g. 1.3V for a 130 Vdc system), remote sense wiring is recommended (refer to Section 11 ).
  2. Do not run external ac and dc power wiring through the same conduit.
  3. Facility-specific installation requirements take precedence.

Click the toggle below to see the DC Output connections required for your ATevo’s enclosure style:

2.5.1 I/O Connections (Style-5054)

PROCEDURE

  1. Use a dc disconnect switch or circuit breaker between ATevo and the dc bus. This device should have lockout capability to allow ATevo to be disconnected from the dc bus for maintenance.
  2. Remove safety shield per Section 2.2.
  3. Run dc wiring to Output Circuit Breaker (CB2).
  4. Connect wires to appropriate locations on the DC Output Breaker (CB2+/-) as indicated on drawing above.
  5. Using a flat-blade screwdriver, securely tighten compression screws on DC Output Breaker Terminals (CB2+/-).
  6. Reinstall safety shield after you have made and checked all connections.

2.5.2 I/O Connections (Style-5070)

PROCEDURE

  1. Use a dc disconnect switch or circuit breaker between ATevo and the dc bus. This device should have lockout capability to allow ATevo to be disconnected from the dc bus for maintenance.
  2. Remove safety shield per Section 2.2.
  3. Run dc wiring into ATevo, ending at right side of I/O panel.
  4. Connect wires to appropriate dc output CU-AL compression lugs on right side of I/O panel.
  1. Using a flat-blade screwdriver, securely tighten lugs for pos(+) and neg(-) connections.
  2. Check all dc output connections, and reinstall safety shield.
Last modified: 8 September 2023