AEG MBS 2000 User Manual

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OPERATING INSTRUCTION EXTERNAL BYPASS SWITCH

MBS 2000

MBS 3000

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1 General

The external, manually operated bypass unit is an option for the PROTECT B., C. and C.R UPS series. It is used for isolating the UPS, for example for maintenance purposes, whilst the connected loads continue to be supplied without interruption. Furthermore, an additional switch setting permits UPS test operation.

Scope of delivery:

External bypass unit MBS 2000 or MBS 3000

4 adhesive pads for attaching to the tower model

2 brackets for 19" rack mounting

4 screws for attaching the brackets to the bypass

2 connection cables to the UPS

Operating instructions

Prerequisites:

AEG PROTECT B., PROTECT C. or PROTECT C.R UPS series

2 Description

The external bypass is used for changing over between:

"NORMAL" operation (default switch position), i.e. secure load supply with UPS back-up.

"TEST" operation (service position), i.e. load supply directly from the mains,

additional mains supply to the UPS for service purposes.

"BYPASS" operation (bypass position), i.e. load supply directly from the mains, additional complete isolation of the UPS

UPS output may still be live due to its internal voltage source!

If there is a mains failure during "TEST" and "BYPASS" operation then the supply to the connected loads will be interrupted.

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AEG MBS 2000 User Manual

3 Installation (mechanical)

Type MBS 2000

PROTECT B. 750 / B. 1000

PROTECT B. 1500 / B. 2000

PROTECT C. 1000 / C. 1000R

PROTECT C. 2000

Example: PROTECT C. 1000 with MBS 2000

Attach the external bypass to tower units with using the four adhesive pads on the side of the UPS housing as shown in the adjacent figure.

Type MBS 3000

PROTECT B. 3000 PROTECT C. 3000 / C. 3000R

Attach the external bypass to more powerful tower units with 3000 VA using the four adhesive pads on the top of the UPS as shown in the adjacent figure.

Example: PROTECT C. 3000 with MBS 3000

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