21 isolator connections

8/19/2019 21 Isolator Connections

1/1

size = 86 H x 86 W x 38 D

21

Example of how the SCI’s can be used to isolate awiring short-circuit in any part of the building fromthe rest of the fire alarm system

IN IU

SD

CP

SNDRTEE

SCI

SCI

TEE

TEE

TEE

TEE

Loop 1 Loop 2

From FirePointControl Panel

IN

OUT

OUT

OUT

IN

IN

IN

SCI

SCI

SCI

TEE

Loop IN Loop OUT

SCI short-circuit isolator

IN

OUT

TEE

Lloyds Alarms Ltd3 Connaught Business Centre

Malham Rd London SE23 1AH Phone. 020- 8699 8599 Fax. 020- 8699 9290

FirePoint

In normal operation both GREEN lights on the side of the SCI will be ON, when the system goes into FIRE both lightswill change to RED. If there is a short-circuit on the TEE wiring the TEE light will go out, and after a few seconds thecontrol panel will show the location of the “lost” detectors.

No setting-up or re-programming is required when fitting these Isolators. Don’t fit more than 3 Isolators per Loop

The SCI limits the available alarm current on each TEE wiring at 100mA, which represents approx’ qty 6 x Squashnisounders or qty x 18 Symphony low-current sounders in full alarm condition.

If the SCI is fitted at the end of the “Loop” wiring nothing needs to be fitted into the OUT terminals.

SCI short-circuit isolator connections