Aeg MBS 3000 User Manual

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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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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