Protectowire 2000 FireSystem Specifikace stáhnout pdf (Strana 42)

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Some applications of PROTECTOWIRE linear heat detection circuits require energy limiting to prevent explosions in areas

classified as hazardous locations. One method used to accomplish this “Intrinsic Safety” is to utilize diode shunt barriers.

Diode shunt barriers consist of zener diodes with current limiting resistors which “shunt” excess voltage spikes to ground.

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The Stahl # 9001/01-280-100-101 is a single channel barrier used in the FS2000 Series Fire Alarm Control Panels to

provide protection in hazardous locations. If excess voltage appears across the detection circuit, the internal zener diodes of

the barriers instantaneously conduct in the reverse bias direction passing the overflow current directly to earth ground. The

replaceable 160mA fuse protects the barrier from reverse polarity connection or from exposure to damaging current levels.

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1. Resistance from barrier mounting strip to earth ground =ECD25 1 ohm or

less.

2. ALL intrinsically safe wiring =ECD259C?<1D546B?=>?>C165G9B9>71>4

B?ED549>1C5@1B1D53?>4E9D

3. $?>C165 wiring =ECD>?Dcross into safe wiring area segregated by black

lines within the system enclosure.

4. The system ground fault detection circuit is disabled due to the negative leg

of the initiating circuit being connected to earth ground.

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6. Suitable for hazardous locations Class I, II and III, Division 1, Groups A

through G.

7. Reference control drawing IL-1008 for installation.

8. The FS2000 Control Panel and associated intrinsic safety barriers =ECD be

installed and located outside of the hazardous area.

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Nominal Input Voltage 24VDC

Maximum Input Voltage 28VDC

Internal Resistance 303 ohms +/- 16 ohms

Fuse Rating 160mA rep.#011239

Leakage Current less than 1uA

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 62 63

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Protectowire 2000 FireSystem Specifikace Strana 42

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