Pelco WCS1-4 Manuel d'utilisateur télécharger pdf (Page 7)

C561M-E (8/05) 7

CABLE CONNECTIONS AND REQUIREMENTS

Table A. Wiring Distances

The following are the recommended maximum distances to wire the WCS1-4 to a Spectra III or

Esprit positioning system.

To determine the correct voltage tap:

1. Pick the unit type.

2. Find the wire gauge used (22 gauge is not recommended).

3. Determine which secondary output tap (A, B, or C) is appropriate for the distance between the

dome or positioning system and the WCS1-4. Distance is in feet (meters).

MAXIMUM DISTANCE FROM TRANSFORMER TO LOAD

20 AWG 18 AWG 16 AWG 14 AWG 12 AWG

Spectra III Indoor (25 VA) (0.5 mm

) (1.0 mm

) (1.5 mm

) (2.5 mm

) (4.0 mm

)

Tap A (24 VAC) 113 (34) 180 (55) 287 (87) 455 (139) 725 (221)

Tap B (26 VAC) 133 (40) 212 (64) 337 (103) 536 (163) 852 (260)

Tap C (28 VAC) 155 (47) 246 (75) 392 (119) 623 (190) 990 (302)

Environmental Spectra III and 20 AWG 18 AWG 16 AWG 14 AWG 12 AWG

Esprit with IOC & IOP (70 VA) (0.5 mm

) (1.0 mm

) (1.5 mm

) (2.5 mm

) (4.0 mm

)

Tap A (24 VAC) 41 (12) 64 (19) 102 (31) 163 (50) 259 (79)

Tap B (26 VAC) 49 (15) 78 (24) 124 (38) 198 (60) 315 (96)

Tap C (28 VAC) 55 (17) 88 (27) 135 (41) 222 (68) 353 (107)

20 AWG 18 AWG 16 AWG 14 AWG 12 AWG

Esprit (50 VA) (0.5 mm

) (1.0 mm

) (1.5 mm

) (2.5 mm

) (4.0 mm

)

Tap A (24 VAC) 56 (17) 90 (27) 143 (43) 228 (69) 362 (110)

Tap B (26 VAC) 66 (20) 105 (32) 168 (51) 268 (81) 425 (129)

Tap C (28 VAC) 77 (23) 122 (37) 195 (59) 311 (94) 493 (150)

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