Delta MBB-S Original operating instructions

Maintenance Bypass Box
for Single UPS
Installation & Operation Guide
About this Guide
This guide contains information about installing and operating the
Delta Maintenance Bypass Box for Single UPS (MBB-S). Before you
install this unit, please read the safety instructions below.
Save these Instructions
This guide contains instructions and warnings that should be followed
during the installation, operation and storage of this product. Failure
to heed these instructions and warnings will void the product warranty.
This product is designed for indoor use only in a controlled
environment away from excess moisture, temperature extremes,
conductive contaminants, dust or direct sunlight.
• Do not connect the MBB-S to an ungrounded outlet or extension
cords or adapters that eliminate the connection to ground
•
Do not use this equipment in the presence of ammable substances.
• The power requirement for each piece of equipment connected to
the MBB must not exceed the individual outlet's load rating.
• Do not drill into or attempt to open any part of the MBB housing.
There are no user serviceable parts inside.
• Do not modify the MBB-S.
• Do not use the MBB-S if any part of it becomes damaged.
• Never install electrical equipment during a thunderstorm.
Safety Precautions
To reduce the risk of personal injury from electric shock, you must
observe the following safety precautions when placing, installing,
operating, or performing maintenance on the Delta MBB-S.
Warnings!
• Elevated Operating Ambient - If installed in a closed or multi-unit
rack assembly, the operating ambient temperature of the rack
environment may be greater than room ambient. Therefore,
consideration should be given to installing the equipment in an
environment compatible with the maximum ambient temperature
(Tma) specied by the manufacturer.
• Reduced Air Flow - Installation of the equipment in a rack should
be such that the amount of air ow required for safe operation of the
equipment is not compromised.
• Mechanical Loading - Mounting of the equipment in the rack
should be such that a hazardous condition is not achieved due to
uneven mechanical loading.
• Circuit Overloading - Consideration should be given to the
connection of the equipment to the supply circuit and the effect that
overloading of the circuits might have on over-current protection and
supply wiring. Appropriate consideration of equipment nameplate
ratings should be used when addressing this concern.
• Reliable Earthing - Reliable earthing of rack-mounted equipment
should be maintained. Particular attention should be given to supply
connections other than direct connections to the branch circuit (such
as use of power strips).
Precautions for Rack Mounting
Delta strongly recommends that you do not perform maintenance on
the MBB-S if it is receiving input power.
• To reduce your risk of personal injury by electric shock, you must:
• Be a certied electrician trained in live electrical installation
• Always work with another qualied person
• Know how to disconnect electricity to the MBB and data center in
case of emergency
• Wear the right protective equipment
• Use double-insulated tools
• Strictly follow local and site regulations
Maintenance with Input Power
This is a Class A product. In a domestic environment this product may
cause radio interference in which case the user may be required to
take adequate measures.
Electromagnetic Interference
The Delta Maintenance Bypass Box for Single UPS (MBB-S) lets you
isolate a single UPS from the load without interrupting power to
essential applications. This allows you to perform scheduled UPS
maintenance or UPS replacement without disrupting power.
The MBB-S easily transfers power between normal and bypass mode
using a rotary switch.
1. MBB-S Overview
The Delta MBB-S package should contain the following items:
2. Package Contents
3. Installing the MBB-S
CAUTION:
• A licensed electrician must install the Delta MBB-S.
• The UPS unit must be switched off and unplugged before
installation.
• Install a utility circuit breaker for input wiring.Refer to the drawing &
table below.
Quantity Item
1pcs MBB-S
1set Fixing Plate
1set Ear bracket
1pcs Parallel Cable
1pcs MBB-S Installation & Operation Guide
4pcs Cable gland
12pcs Terminal
System
Voltage Current Full
Load Nominal
External Input Circuit
Breaker Typical
Wire Size
Typical (mm2)
Input Output Input Output
For
5/7k
UPS
For
9/11k
UPS
For
5/7k
UPS
For
9/11k
UPS
MBB-S
200/208/220/
230/240Vac
1Phase
50A 40A
2Pole
63A
2Pole 8 10
Remark: The External Input Circuit Breaker must use the components
approved for its safety certication.
4. Fixing the MBB-S
4-1. Tower Conguration
1. Place the MBB-S on the top rear of the UPS unit.
2. Locate and align the xing holes on the MBB-S and UPS unit.Use
a screwdriver to fasten the xing plates with the provided screws
and attach the MBB-S to the UPS unit.
3.
Place the UPS and MBB-S in the upright tower position and secure
the mounting feet.
4-2. Rack-mount Conguration
1. Attach the mounting brackets to the MBB-S using the M4*6mm
screws that came with the brackets.
2. Choose a location in the rack for the MBB-S.
3. Install the MBB-S on your rack using the screws and cage nuts.
(The screws and cage nuts are provided with the rack frame.)
Fig. 2
5. Making Connections
The steps below show you how to connect power cables so the path
of AC power ows through the MBB-S to the UPS, or alternately,
bypassing the UPS and directly to the connected load.
Fig. 3
5-2. Attach the cable glands to the cable entry boxes. Insert the
cables through the cable glands and then insert the leads of the
cables into the
termina l blocks and fasten screws. See Fig. 4.
Fig. 4
5-1. Unscrew and remove the cable entry boxes on the MBB-S.
See Fig. 3.
(The mounting feet are provided with the UPS or from a dealer.)
Fig. 1
MBB-S
x8
x6
x4
x4
UPS OUTPUT
LOAD
UPS INPUT
AC INPUT

5-4. After connecting power cables to the MBB-S, make connections
to the UPS units as below. See Fig. 6.
Fig. 6
6. Operation
Seller warrants this product, if used in accordance with all applicable
instructions, to be free from original defects in material and
workmanship for its lifetime. If the product should prove defective
in material or workmanship within that period, Seller will repair or
replace the product, at its sole discretion.
8. Warranty
THIS WARRANTY DOES NOT APPLY TO NORMAL WEAR OR TO
DAMAGE RESULTING FROM ACCIDENT, MISUSE, ABUSE OR
NEGLECT. SELLER MAKES NO EXPRESS WARRANTIES OTHER
THAN THE WARRANTY EXPRESSLY SET FORTH HEREIN.
EXCEPT TO THE EXTENT PROHIBITED BY APPLICABLE LAW,
ALL IMPLIED WARRANTIES, INCLUDING ALL WARRANTIES
OF MERCHANTABILITY OR FITNESS, ARE LIMITED IN
DURATION TO THE WARRANTY PERIOD SET FORTH ABOVE;
THIS WARRANTY EXPRESSLY EXCLUDES ALL INCIDENTAL AND
CONSEQUENTIAL DAMAGES.
WARNING: The individual user should take care to determine prior
to use whether this device is suitable, adequate or safe for the use
intended. Since individual applications are subject to great variation,
the manufacturer makes no representation or warranty as to the
suitability or tness of these devices for any specic application.
5-3. Fasten the cable entry boxes to the MBB-S unit and then fasten
the cables with the locking nuts of the cable glands. See Fig. 5.
Fig. 5
a. Connect the parallel cable from the MBB-S to UPS.
b. Connect the power cables from the MBB-S to UPS.
TO AC INPUT
TO LOAD
Temperature: Operating: 0°C to 40°C;
Storage: -15°C to 50°C.
Altitude: Operating: 0 to 6,600 feet (0 to 2000 meters);
Non-operating: 0 to 49,000 feet (0 to 15,000 meters).
Humidity:
Operating: 5 to 95% relative humidity (non-condensing);
Non-operating: 5 to 95% relative humidity
(non-condensing).
7. Environmental
When the MBB-S rotary switch is set to Bypass Mode the MBB-S is
providing an alternate path for the AC power to the connected load.
6-1. Switching to Bypass Mode
1. Place the UPS into maintenance bypass mode according to the
instructions in your UPS operation manual.
2. Turn the rotary switch to the Test position. Note that power is still
present at the UPS terminals at the Test Position.
3. Shut down the UPS according to your UPS shutdown instructions.
4. Turn the rotary switch to the Bypass position to isolate the UPS
from your power source.
When the MBB-S rotary switch is set to Normal the UPS is supplying
the connected load with AC power. The load is protected by the UPS.
6-2. Switching to Normal Mode
1. Turn the rotary switch to the Test position. Note that power is still
present at the UPS terminals at the Test Position.
2.
Put the UPS into maintenance bypass mode according to the
instructions in your UPS operation manual.
3. Turn the rotary switch to the Normal position to isolate the UPS
from your power source.
4. Put the UPS into normal operating mode according to the
instructions in your UPS operation manual.
CAUTION:
• You must put the UPS units in maintenance bypass mode before
switching modes.
• Please see your UPS operation guide for instructions.