Furse Total Solution to Earthing & Lightning Protection

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Total Solution to Earthing & Lightning Protection |

9AKK106354A3360

Specific systems protection

ESP RF Series

NOTE:

These protectors are based on a continuous transmission line with a GDT connected between this line and screen/earth, and are suited for applications

where DC is required to pass to the equipment. For RF applications where the connected equipment is very sensitive to transient overvoltages, use the higher

specification RF protectors. ESP CCTV/B and ESP CCTV/T are suitable for use on coaxial (or twisted pair) CCTV lines. For coaxial CATV lines, use the CATV/F.

Combined Category D, C, B tested protector (to BS EN 61643) suitable for RF

systems using coaxial cables at frequencies between DC and 2.7 GHz and where

DC power is present. Suitable for RF systems with power up to 2.3 kW. For use at

boundaries up to LPZ

to protect against flashover (typically the service

entrance location) through to LPZ 3 to protect sensitive electronic equipment.

Application

Use on coaxial cables to protect RF transmitter and receiver

systems, including electronics located at the antenna

or dish. Typical examples include cell sites, military

communications, satellite earth stations, pager systems

and emergency services communications systems.

PART NUMBERING SYSTEM:

Furse RF protectors have six digit part codes,

prefixed with ESP RF. The selected digits define the exact specification of the

required protector, e.g.

ESP RF AABCDE

Connector type - ESP RF AAxxxx

The first 2 digits refer to the connector

type:

- N type female,

- 7/16 DIN type female,

- BNC female

Line impedance - ESP RF xxBxxx

3rd digit refers to the line impedance.

Currently only one option:

- 50 Ω transmission line.

Gas Discharge Tube (GDT) selection - ESP RF xxxCxx

Select the 4th digit

from the table at the bottom (opposite). Selection of the correct GDT is critical

in the effectiveness of using these protectors. For the correct GDT, take the

maximum RF power or voltage of the system and select a GDT with a

voltage/power handling greater than the system.

IMPORTANT NOTE:

When using the peak RF voltage to select the GDT, if the

system is a multi-carrier system the (in phase) peak RF voltage can be calculated

as the total of all the single carrier peak voltages on the transmission line.

Protector rating - ESP RF xxxxDx

5th digit specifies the protector rating:

- Higher specification,

- Standard specification

Case plating - ESP RF xxxxxE

6th digit specifies the case plating:

- White bronze,

- Silver

Features & benefits

–– Very low let-through voltage (enhanced protection to

IEC/BS EN 62305) between all lines - Full Mode protection

–– Full Mode design capable of handling partial lightning currents

as well as allowing continual operation of protected equipment

–– Repeated protection in lightning intense environments

–– Superior transient protection to both Gas Discharge Tube

(GDT) and Quarter Wave Stub (QWS) based protectors

–– Wide bandwidth means a single product is suitable for a

range of applications

–– Very low attenuation and near unity VSWR over a wide

range of frequencies ensure the protectors do not impair

system performance

–– Available with N, 7/16 DIN and BNC connectors

–– Easily mounted and earthed via fixtures on the base of the unit

that accept M3 and M5 screws or via mounting brackets

–– Additional mounting plates give increased flexibility

–– Robust white bronze plated aluminium housing (silver

plate option)

Installation

In a building, connect in series with the coaxial cable near

where it enters or leaves the structure, or close to the equipment

being protected. This should be as close as possible to the

system’s earth star point (to enable a good connection to earth).

On a mast, connect in series with the coaxial cable near the

antenna/dish being protected. Install in a radio communications

room, an existing cabinet or a suitable enclosure.

Accessories

ESP RF BK1

Straight mounting plates

ESP RF BK2

90° angled mounting plates

ESP RF BK3

Bulkhead through mounting

plate (single)

ESP RF BK4

Bulkhead through mounting

plate (for 4 products)

ESP RF GDT-x

Replacement gas discharge

tubes (Where x is the correct GDT part

code digit for your system.

Full product range order codes can be found on pages 17/8-17/9

From line

To equipment

Earth

ESP RF 111A21 with N female connectors

installed in series

DIRTY

CLEAN