Toshiba manual CTX28 Secondary Protection, Installation

CTX28 Installation

CTX28 Secondary Protection

CTX28 Secondary Protection

The following diagram (see Figure 1-18) shows where secondary protectors must be installed for outside wiring.

CTX28

Building #1

GMAU

GSTU

GMAU

GCDU

GMAU

GDCU

7255

Building #2
	HESB
Standard
Telephone
DDSS	Digital Telephone
Console
Digital Telephone
or Cordless Base
MDFB
	DDCB
	MDFB

Loop CO Line

Secondary protectors – standard voltage

Installation

(Earth Ground) Secondary protectors – low voltage

Figure 1-18 CTX28 Secondary Protector Diagram

Important! To protect against transient voltages and currents, solid state secondary protectors must be installed if there is outside wiring. These protectors, which contain fast semiconductors in addition to fuses, shall comply with the requirements for secondary protectors for communication circuits, UL 497A. Care must be taken to ensure that they are very well grounded to a reliable earth ground. Recommended protectors are available in the fast Series 6 line from ONEAC Corp., Libertyville, Illinois 60048, (800) 327-8801. Install and test the secondary protectors precisely to the installation instructions of these manufacturer.

Strata CTX I&M 06/04 1-23