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EX9214 Site Guidelines and Requirements

Environmental Requirements and Specifications for EX Series Switches

The switch must be installed in a rack or cabinet housed in a dry, clean, well-ventilated, and temperature-controlled environment.

Ensure that these environmental guidelines are followed:

  • The site must be as dust-free as possible, because dust can clog air intake vents and filters, reducing the efficiency of the switch cooling system.

  • Maintain ambient airflow for normal switch operation. If the airflow is blocked or restricted, or if the intake air is too warm, the switch might overheat, leading to the switch temperature monitor shutting down the switch to protect the hardware components.

Table 1 provides the required environmental conditions for normal switch operation.

Table 1: EX Series Switch Environmental Tolerances

Switch or device

Environment Tolerance

Altitude

Relative Humidity

Temperature

Seismic

EX2200-C

No performance degradation up to 5,000  feet (1524  meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 104°   F (40° C) at altitudes up to 5,000  ft (1,524 m).

For information about extended temperature SFP transceivers supported on EX2200 switches, see Pluggable Transceivers Supported on EX2200 Switches.

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX2200 (except EX2200-C switches)

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX2300-C

No performance degradation up to 5,000  feet (1524 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 104°   F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX2300 (except EX2300-C switches)

No performance degradation up to 13,000  feet (3962 meters) at 104°   F (40° C) as per GR-63

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX3200

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX3300

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX3400

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX4100

No performance degradation up to 5,000  feet (1524 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX4200

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX4300

EX4300 switches except the EX4300-48MP model— No performance degradation up to 10,000  feet (3048 meters)

EX4300-48MP model— No performance degradation up to 6,000  feet (1829 meters)

EX4300 switches except the EX4300-48MP model— Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

EX4300-48MP model— Normal operation ensured in the relative humidity range 5% through 90% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX4400

No performance degradation up to 6,000  feet (1829 meters)

Normal operation ensured in the relative humidity range 10% through 90% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX4500

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX4550

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

  • EX4550-32F switches— Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

  • EX4550-32T switches— Normal operation is ensured in the temperature range 32°   F through 104°   F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX4600

No performance degradation to 6,562  feet (2000 meters)

Normal operation ensured in the relative humidity range 5% through 90%, noncondensing

  • Short-term operation ensured in the relative humidity range 5% through 93%, noncondensing

    Note:

    As defined in NEBS GR-63-CORE, Issue 4, short-term events can be up to 96 hours in duration but not more than 15 days per year.

  • Normal operation ensured in the temperature range 32°   F (0° C) through 113°   F (45° C)

  • Nonoperating storage temperature in shipping container: – 40°   F (–40° C) through 158°   F (70° C)

Complies with Zone 4 earthquake requirements per NEBS GR-63-CORE, Issue 4.

EX4650

No performance degradation to 6,000  feet (1829 meters)

Normal operation ensured in the relative humidity range 10% through 85% (condensing)

Normal operation is ensured in the temperature range 32°   F (0° C) through 104°   F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX6210

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation is ensured in the temperature range 32°   F (0° C) through 104°   F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX8208

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation is ensured in the temperature range 32°   F (0° C) through 104°   F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX8216

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation is ensured in the temperature range 32°   F (0° C) through 104°   F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX9204

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 5% through 90% (noncondensing)

Normal operation is ensured in the temperature range 32°   F (0° C) through 104°   F (40° C)

Nonoperating storage temperature in shipping container: – 40°   F (–40° C) to 158°   F (70° C)

Complies with Zone 4 earthquake requirements as per GR-63.

EX9208

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 5% through 90% (noncondensing)

Normal operation is ensured in the temperature range 32°   F (0° C) through 104°   F (40° C)

Nonoperating storage temperature in shipping container: – 40°   F (–40° C) to 158°   F (70° C)

Complies with Zone 4 earthquake requirements as per GR-63.

EX9214

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 5% through 90% (noncondensing)

Normal operation is ensured in the temperature range 32°   F (0° C) through 104°   F (40° C)

Nonoperating storage temperature in shipping container: – 40°   F (–40° C) through 158°   F (70° C)

Complies with Zone 4 earthquake requirements as per GR-63.

EX9251

No performance degradation up to 10,000  ft (3048 m)

Normal operation ensured in relative humidity range of 5% to 90%, noncondensing

Normal operation ensured in temperature range of 32°   F (0° C) to 104°   F (40° C)

Nonoperating storage temperature in shipping container: – 40°   F (–40° C) to 158°   F (70° C)

Complies with Telcordia Technologies Zone 4 earthquake requirements

XRE200

No performance degradation up to 10,000  feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 41°   F (5° C) through 104°   F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.
Note:

Install EX Series switches only in restricted areas, such as dedicated equipment rooms and equipment closets, in accordance with Articles 110– 16, 110– 17, and 110– 18 of the National Electrical Code, ANSI/NFPA 70.

General Site Guidelines

Efficient device operation requires proper site planning and maintenance. It also requires proper layout of the equipment, rack or cabinet, and wiring closet.

To plan and create an acceptable operating environment for your device and prevent environmentally caused equipment failures:

  • Keep the area around the chassis free from dust and conductive material, such as metal flakes.

  • Follow the prescribed airflow guidelines to ensure that the cooling system functions properly. Ensure that exhaust from other equipment does not blow into the intake vents of the device.

  • Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent damaging the equipment. Static discharge can cause components to fail completely or intermittently over time.

  • Install the device in a secure area, so that only authorized personnel can access the device.

Site Electrical Wiring Guidelines

Table 2 describes the factors you must consider while planning the electrical wiring at your site.

Warning:

You must provide a properly grounded and shielded environment and use electrical surge-suppression devices.

Avertissement Vous devez établir un environnement protégé et convenablement mis à la terre et utiliser des dispositifs de parasurtension.
Table 2: Site Electrical Wiring Guidelines

Site Wiring Factor

Guidelines

Signaling limitations

If your site experiences any of the following problems, consult experts in electrical surge suppression and shielding:

  • Improperly installed wires cause radio frequency interference (RFI).

  • Damage from lightning strikes occurs when wires exceed recommended distances or pass between buildings.

  • Electromagnetic pulses (EMPs) caused by lightning damage unshielded conductors and electronic devices.

Radio frequency interference

To reduce or eliminate RFI from your site wiring, do the following:

  • Use a twisted-pair cable with a good distribution of grounding conductors.

  • If you must exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal, when applicable.

Electromagnetic compatibility

If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly from lightning or radio transmitters, seek expert advice.

Strong sources of electromagnetic interference (EMI) can cause:

  • Destruction of the signal drivers and receivers in the device

  • Electrical hazards as a result of power surges conducted over the lines into the equipment.

Clearance Requirements for Airflow and Hardware Maintenance for an EX9214 Switch

When planning the site for installing an EX9214 switch, you must allow sufficient clearance around the switch.

For the cooling system to function properly, the airflow around the chassis must be unrestricted. See Figure 1.

Figure 1: Airflow Through an EX9214 SwitchAirflow Through an EX9214 Switch

  • For switches with AC power supplies, allow at least 24 in. (61 cm) of clearance in front of the switch and at least 26.85 in. (68.2 cm) of clearance behind the switch. Allow 2.8 in. (7.1 cm) between the side of the chassis and any non-heat-producing surface such as a wall. See Figure 2.

    Figure 2: Clearance Requirements for Airflow and Hardware Maintenance for an EX9214 Switch with AC Power SuppliesClearance Requirements for Airflow and Hardware Maintenance for an EX9214 Switch with AC Power Supplies

  • For switches with DC power supplies, allow at least 24 in. (61 cm) of clearance in front of the switch and at least 29.05 in. (73.8 cm) of clearance behind the switch. Allow 2.8 in. (7.1 cm) between the side of the chassis and any non-heat-producing surface such as a wall. See Figure 3.

    Figure 3: Clearance Requirements for Airflow and Hardware Maintenance for an EX9214 Switch with DC Power SuppliesClearance Requirements for Airflow and Hardware Maintenance for an EX9214 Switch with DC Power Supplies

  • If you are mounting the switch on a rack or cabinet along with other equipment, ensure that the exhaust from other equipment does not blow into the intake vents of the chassis.

    Airflow must always be from front to back with respect to the rack. If the device has side to rear airflow, then provisions must be made to ensure that fresh air from the front of the rack is supplied to the inlets, and the exhaust exits at the rear of the rack. The device must not interfere with the cooling of other systems in the rack. Fillers must be used as appropriate in the rack to ensure there is no recirculation of heated exhaust air back to the front of the rack. You must also ensure that hot air does not flow around the cables.

  • For service personnel to remove and install hardware components, there must be adequate space at the front and back of the switch. At least 24 in. (61 cm) is required both in front of and behind the switch. NEBS GR-63 recommends that you allow at least 30 in. (72.6 cm) in front of the rack and 24 in. (61.0 cm) behind the rack.

Rack Requirements

You can mount the device on two-post racks or four-post racks.

Rack requirements consist of:

  • Rack type.

  • Mounting bracket hole spacing.

  • Rack size and strength.

  • Rack connection to the building structure.

Table 3 provides the rack requirements and specifications.

Table 3: Rack Requirements and Specifications

Rack Requirement

Guidelines

Rack type

A U is the standard rack unit defined by the Electronic Components Industry Association (http://www.ecianow.org).

You can mount the device on a rack that provides bracket holes or hole patterns spaced at 1U (1.75 in. or 4.45 cm) increments and meets the size and strength requirements to support the weight.

Mounting bracket hole spacing

The holes in the mounting brackets are spaced at 1U (1.75 in. or 4.45 cm) so that the device can be mounted in any rack that provides holes spaced at that distance.

Rack size and strength

Ensure that the:

  • Rack complies with the size and strength standards of a 19-in. rack as defined by the Electronic Components Industry Association (http://www.ecianow.org).

  • Rack rails are spaced widely enough to accommodate the external dimensions of the device chassis. Ensure also that the outer edges of the front mounting brackets extend the width of the chassis to 19 in. (48.2 cm).

  • Rack is strong enough to support the weight of the device.

  • Spacing of rails and adjacent racks provides for proper clearance around the device and rack.

Rack connection to building structure

Secure the rack as follows:

  • Secure the rack to the building structure.

  • If your geographical area is earthquake-prone, secure the rack to the floor.

  • Secure the rack to the ceiling brackets as well as wall or floor brackets for maximum stability.

See Also

Cabinet Requirements

You can mount the device in a cabinet that contains a 19-in. rack.

Cabinet requirements consist of:

  • Cabinet size.

  • Clearance requirements.

  • Cabinet airflow requirements.

Table 4 provides the cabinet requirements and specifications.

Table 4: Cabinet Requirements and Specifications

Cabinet Requirement

Guidelines

Cabinet size

  • The minimum cabinet size is 36 in. (91.4 cm) deep. Large cabinets improve airflow and reduce chances of overheating.

Cabinet clearance

  • The outer edges of the front mounting brackets extend the width of the chassis to 19 in. (48.2 cm).

  • The minimum total clearance inside the cabinet is 30.7 in. (78 cm) between the inside of the front door and the inside of the rear door.

Cabinet airflow requirements

When you mount the device in a cabinet, ensure that ventilation through the cabinet is sufficient to prevent overheating, as follows:

  • Ensure adequate cool air supply to dissipate the thermal output of the device or devices.

  • Ensure that the hot air exhaust of the chassis exits the cabinet without recirculating into the device. An open cabinet (without a top or doors) that employs hot air exhaust extraction from the top ensures the best airflow through the chassis. If the cabinet contains a top or doors, perforations in these elements assist with removing the hot air exhaust.

  • Install the device in the cabinet in a way that maximizes the open space on the side of the chassis that has the hot air exhaust.

  • Route and secure all cables to minimize the blockage of airflow to and from the chassis.

  • Ensure that the spacing of rails and adjacent cabinets is such that proper clearance exists around the device and cabinet.

  • A cabinet larger than the minimum required provides better airflow and reduces the chance of overheating.

Grounding Cable and Lug Specifications for EX9200 Switches

To ensure proper operation and to meet safety and electromagnetic interference (EMI) requirements, you must connect an EX9200 switch to earth ground before you connect power to the switch. You must use the protective earthing terminal on the switch chassis to connect the switch to earth ground.

Warning:

The switch is installed in a restricted-access location. It has a separate protective earthing terminal on the chassis that must be permanently connected to earth ground to adequately ground the chassis and protect the operator from electrical hazards.

CAUTION:

Before switch installation begins, ensure that a licensed electrician has attached an appropriate grounding lug to the grounding cable that you supply. Using a grounding cable with an incorrectly attached lug can damage the switch.

Grounding Points Specifications for an EX9200 Switch

To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, the switch must be adequately grounded before power is connected. To ground AC-powered and DC-powered switches, you must connect a grounding cable to earth ground and then attach it to the chassis grounding points using the two screws provided.

Two threaded inserts (PEM nuts) are provided on the upper rear of the chassis for connecting the switch to earth ground. The grounding points fit UNC 1/4–20 screws (American). The grounding points are spaced at 0.625 in. (15.86 mm) centers.

Note:

Additional grounding is provided to an AC-powered switch when you plug its power supplies into grounded AC power receptacles.

Grounding Cable Lug Specifications for an EX9200 Switch

The accessory box shipped with the switch includes one cable lug that attaches to the grounding cable (see Figure 4) and two UNC 1/4–20 screws used to secure the grounding cable to the grounding points.

Figure 4: Grounding Lug for an EX9200 SwitchGrounding Lug for an EX9200 Switch
CAUTION:

Before switch installation begins, a licensed electrician must attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the switch.

Note:

The same cable lug is used for the DC power cables.

Grounding Cable Specifications for an EX9200 Switch

The grounding cable that you provide must meet the specifications in Table 5.

Table 5: Grounding Cable Specifications

Cable Type

Quantity and Specification

Grounding

One 6 AWG (13.3 mm2), minimum 60 °C wire, or one that complies with the by the local code

For DC-powered EX9214 switches, the 48 VDC facility must be equipped with a circuit breaker rated 40 A (–48 VDC), or 60 A (–48 VDC), and the grounding cable must be minimum 10 AWG, or one that complies with the by the local code.