4.1.4  
Installing HiPath 3800 (19-Inch Cabinet) 
 
This section contains information on how to install the HiPath 3800 communication system in a 19-inch cabinet. This chapter describes the standard installation procedures for the basic system. Refer to Chapter 9 "Expanding and Upgrading HiPath 3000" for information about supplementary equipment or expansions.

4.1.4.1  
Selecting the Installation Site 
The installation site is generally determined by the 19-inch cabinet already installed.
The following specifications must be observed when selecting a location:
 •   The 19-inch cabinets provided for installing the HiPath 3800 components must have the following characteristics:
   -   Components installed in the 19-inch cabinet must be accessible from both the front and the rear.
   -   It should be possible to install 19-inch components both at the front and at the rear (  four vertical bars).
   -   It is recommended that the width of the cabinet measure 700 to 800 mm; the depth at least 600 mm. Deeper cabinets (800 - 900 mm) make installation, cable servicing, and the installation of additional components in the rear of the cabinet much easier.
   -   The support brackets required for installing the system cabinets must have a minimum ultimate load of 40 kg. The support brackets must be purchased from the relevant 19-inch cabinet supplier.
   -   The system cabinets must be fixed to the cabinet bars using the angle brackets included in the delivery.
 •   One height unit (one height unit is approx. 1.7" = 43 mm) must be kept clear above the cabinet to accommodate the gray plastic cover (Figure 4-9) attached to the top of the system cabinets. Never remove this plastic cover.
 •   The following minimum clearance must be provided in order to ensure adequate ventilation of the system cabinets in the 19-inch cabinet (see Figure 4-10):
   -   three height units between two stacked system cabinets.
   -   one height unit above one system cabinet if a patch panel is being installed, for example.
 •   To guarantee sufficient heat dissipation, the basic cabinet must be mounted at the lowest position in a 19-inch cabinet. In a 19-inch cabinet with active (heat-emitting) components already installed, the lowest position must be cleared for installation of the basic cabinet. If inactive components (e.g. patch panel) are involved, the basic cabinet can also be installed above them.
   
   Figure 4-9   HiPath 3800 - System Cabinet with Plastic Cover
 
 •   Do not expose the 19-inch cabinet to direct sources of heat (such as sunlight and heaters.).
 •   Do not expose the 19-inch cabinet to extremely dusty environments.
 •   Avoid contact with chemicals.
 •   Take every precaution to prevent the formation of condensation on the system during operation. Systems covered with condensation must be dried before being used.
 •   Observe the environmental conditions specified in Section 2.11 "Environmental Conditions".
Information on the design of the HiPath 3800 can be found in Section 2.1.4.1 "Design and Dimensions of HiPath 3800".

Examples for installation in a 19-inch cabinet  
Caution  
The height units represented in yellow in Figure 4-10 must be kept clear to ensure adequate ventilation of the system cabinets.  
 Figure 4-10   HiPath 3800 - Installation Examples in the 19-Inch Cabinet
 

4.1.4.1.1  
For U.S. only: AC Outlet 
An AC connection is required for each cabinet. The AC connection must fulfill the requirements specified in Table 4-3.

 Table 4-3   Electrical Connection Values (USA only)
 Nominal voltage  
 Nominal voltage range  
 Nominal Frequency Range  
 Wall Outlet Configurations  
 from  
 to  
 from  
 to  
 120 V AC/60 Hz  
 110 V AC  
 130 V AC  
 47 Hz  
 63 Hz  
NEMA 5-15, 2-pin, 3-wire, earth  
The system must be properly grounded before startup (see description in Section 4.1.4.4 "Grounding the System").

4.1.4.2  
Unpacking the Components 

Procedure  

 Step  
 Activity  
 1.  
Compare the components with the packing slip or customer receipt to make sure that they are correct and complete.  
 2.  
Determine whether any damage has occurred during transport and report it to the proper departments.  
 3.  
Dispose of the packing materials properly.  
Caution  
Only use tools and equipment that are in perfect condition. Do not use equipment with visible damage.  

4.1.4.3  
Mounting System Cabinets in the 19-Inch Cabinet 

4.1.4.3.1  
Introduction 
The cabinets are not supplied with pre-installed boards. For information on board installation, please see Section 4.1.5 "Installing Boards (Configuration Notes)".
If it has been agreed to provide connector panels for connecting peripherals, these are included in the delivery. For information on the installation procedure, please see Section 4.1.5.4 "Mounting Connector Panels (if required)".
Danger  
Be sure to connect the main protective earthing terminal on all system cabinets to the grounding point of the electrical building installation before starting the system and before connecting up the peripherals (for example, potential equalization bus).  
The system may only be started (connected to the power supply) if all system cabinets are sealed at the rear with the connection and filler panels provided.  

4.1.4.3.2  
Mounting a System Cabinet using Support and Angle Brackets 
If a two-cabinet system is to be installed in a 19-inch cabinet, each system cabinet should be installed separately.
The following components are required to install a system cabinet:
 •   Two cabinet-specific support brackets with an ultimate load > 40 kg, which must be provided by the 19-inch cabinet supplier.
 •   Two angle brackets (order no. C39165-A7075-D1), which are supplied with the system cabinet.
Caution  
To guarantee sufficient ventilation for the system cabinets, comply with the following requirements:  
 •   The basic cabinet may only be mounted at the lowest position in a 19-inch cabinet. In a 19-inch cabinet with active (heat-emitting) components already installed, the lowest position must be cleared for installation of the basic cabinet. If inactive components (e.g. patch panel) are involved, the basic cabinet can also be installed above them.
 •   A minimum clearance of three height units must be maintained between two stacked system cabinets. A minimum clearance of one free height unit above a system cabinet is sufficient if a patch panel is to be installed, for example.

Procedure  
Warning  
Never attempt to lift a system cabinet into the 19-inch cabinet without assistance.  

 Step  
 Activity  
 1.  
Remove all four cabinet feet from the system cabinet.  
To do this, unscrew the lock nuts (Figure 4-11, A) on the cabinet feet using an open-end wrench (wrench size = 13 mm). Unscrew cabinet feet completely.  
 2.  
Attach the two angle brackets (A in Figure 4-12) to the sides of the system cabinet using the screws that have been supplied (four per bracket).  
 3.  
Attach a right-handed and a left-handed support bracket (B in Figure 4-12) in the 19-inch cabinet using the screws provided.  
Note: the use of cabinet floors is not permitted to prevent overheating.  
 4.  
Lift the system cabinet into the 19-inch cabinet and sit the cabinet on the two support brackets (B in Figure 4-12). Slide the cabinet into the 19-inch cabinet until the front edge of the system cabinet is flush with the front of the 19-inch frame.  
 5.  
Secure the system cabinet using the two angle brackets (A, in Figure 4-12) on the frame of the 19-inch cabinet using the screws provided.  
Please note that a minimum clearance of three height units must be observed between two stacked system cabinets. A minimum clearance of one free height unit above a system cabinet is sufficient if a patch panel is to be installed, for example.  
 6.  
Repeat steps [1] to [5] if you want to install an expansion cabinet.  
 Figure 4-11   HiPath 3800 - Removing Cabinet Feet
 

Installation in the 19-inch cabinet  
 Figure 4-12   HiPath 3800 - Installing System Cabinets in 19-Inch Cabinet
 

4.1.4.4  
Grounding the System 
Ground the system as described.

Grounding: Inspection and Implementation  
Implementation guidelines in accordance with IEC 60364 and IEC 60950-1 must be adhered to during installation.

Preliminary Inspection of the 19-Inch Cabinet:  
Is the 19-inch cabinet grounded by a separate ground conductor (green/yellow)?  
The 19-inch cabinet must be grounded by a separate ground conductor (green/yellow).  
Danger  
If your personnel are not qualified to work on the low-voltage network (230 Vac), you must hire a licensed electrician to install the ground. The Section 1.8.1 "Connection to the Power Circuit" is to be adhered to.  
 
Does the 19-inch cabinet have a potential equalization bus at which the HiPath 3800 can be grounded as shown in Figure 4-13 ?  
A potential equalization bus must be installed in the 19-inch cabinet and connected to the ground conductor.  
Danger  
If your personnel are not qualified to work on the low-voltage network (230 Vac), you must hire a licensed electrician to install the ground. The Section 1.8.1 "Connection to the Power Circuit" is to be adhered to.  
 
If you answer "Yes" to both questions, the system (system cabinets, patch panels) may be grounded as described below.  
Danger  
Each HiPath 3800 system cabinet and any patch panel (S30807-K6143-X) that may be installed must be grounded as shown in Figure 4-13 by a separate ground conductor (minimum cross-section = 2.5 mm2). Make sure that the ground conductor is securely installed and strain-relieved.  
If external factors can impact on the ground conductor and if protected installation is not possible, the ground conductor must have a minimum cross-section of 4 mm2.  
Please note:  
The 19-inch cabinet's potential equalization bus may only be used if it is grounded by a separate ground conductor.  
Failure to follow these instructions can result in electrical shock.  

Grounding the system cabinets and possible patch panels  
 Figure 4-13   HiPath 3800- Grounding the Systems and Patch Panels in a 19-Inch Cabinet
 

Note on possible ground loops  
To avoid ground loops from remotely operated devices (V.24 system peripherals), the devices should be connected to the same low-voltage network (sub-distribution board) if possible.
If the building floor plan does not permit this, you may need a line driver to isolate the external devices in the event of a malfunction.  

4.1.4.5  
Checking the Grounding 

Procedure  
Perform the tests in the table below to ensure that the system is properly grounded before startup.

 Step  
 Activity  
 Target  
 1.  
Check the ohmic resistance of the ground connection to the 19-inch cabinet:  
Perform measurement between the PE (protective earth) on a socket in the internal installation (at the system's installation site) and HiPath 3800.  
 
Prerequisites:  
 •   No device in the 19-inch cabinet is connected to the low-voltage network via the power cable.
 •   The system's separate grounding (basic cabinet, expansion cabinet, patch panel) and the grounding of the 19-inch cabinet are connected.
 < 10 ohms  
 2.  
Check the ohmic resistance between the individual system parts (basic cabinet, expansion cabinet, patch panel).  
 
Prerequisite:  
HiPath 3800 is not yet connected to the low-voltage network via the power cable.  
 < 1 ohm  

HiPath 3000/5000 V8, Service Documentation, Issue 10   up Top
Disclaimer & Copyright   ID: P31003H3580S100017620   2011-01-24