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Cummins/Onan BT BCA 400 - 4X U / 3101 E — Transfer Switch Test

For the Cummins/Onan BT BCA 400 - 4X U / 3101 E.

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Before you start

  • Use care when opening cabinet door. High voltages within cabinet and rear side of cabinet door present a serious electrical shock hazard which could result in serious personal injury or death.

Procedure

  1. If optional exerciser is included, open cabinet and move the With Load/Without Load selector switch to the WITH LOAD position.
  2. Verify that the bypass switch handle is in the AUTOMATE position.
  3. Move the Test/Normal/Retransfer switch to the TEST position. The generator set should start and the load should transfer to the emergency source after the preset time delays elapse. The red Emergency Source and Transfer-Switch-Position lamps should be ON.
  4. Check the operation of the AC meters on the cabinet (if equipped) to verify that the meters are functioning properly.
  5. Move the Test/Normal/Retransfer switch to the NORMAL position. The load should retransfer to the Normal Source and the generator set should stop after the preset time delays elapse. The green Normal Source and Transfer-Switch-Position lamps should be ON.

Specs & torque values

  • Preset time delays

Source: manual:962-0108 Onan BT 150 - 1000 Operators Manual (6-1983) .pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.