Watlow HG Series Mercury Displacement Relay Uživatelský manuál stáhnout pdf (Strana 4)

Temperature Control Output to MDR Coil Input

Please refer to the Field Coil Power Requirements when selecting the correct temperature control output.

Example: An HG35-1LD3-X000 requires 224mA to energize the coil and could be used with Watlow

temperature control output options ‘B’ or ‘K’ (i.e. 988A-XXBB-XXXX or 988A-XXKK-XXXX) models. The

best selection is the ‘B’ output option because it includes an RC snubber across the output. If you select

the ‘K’ option, it is recommended that you also purchase a Quencharc® snubber separately (Watlow part

number 0804-0147-0000). Place the snubber across the MDR coil terminals to protect the temperature

control solid state output. When placing the snubber across the coil of a 2 and 3 pole relay, you may have

to add some lead wire to the snubber. The MDR coil is an inductive load and the snubber will reduce the

flyback voltage produced by the MDR coil when it de-energizes. See below.

Note: Watlow temperature control solid state outputs will not drive VDC coils directly. Refer to the coil

current specifications above and any temperature control output specifications as required by the

application.

Quencharc

Snubber

(Purchase

Separately)

HG30-XAAX-0000

1 Pole 2 Pole 3 Pole

Voltage Current Power Current Power Current Power

24V~ (ac) NA NA 0.456A 10.9VA 0.510A 12.2VA

120V~ (ac) NA NA 0.121A 14.5VA 0.106A 12.7VA

208V~ (ac) NA NA 0.055A 11.4VA 0.055A 11.4VA

240V~ (ac) NA NA 0.063A 15.1VA 0.062A 14.9VA

24VÎ (dc) NA NA 0.240A 5.8W 0.250A 6.0W

HG30-XKDX-0000

HG35-XLDX-0000

HG50-XMDX-0000

HG60-XPDX-0000

1 Pole 2 Pole 3 Pole

Voltage Current Power Current Power Current Power

24V~ (ac) 0.235A 5.6VA 0.529A 12.7VA 1.270A 30.5VA

120V~ (ac) 0.057A 6.8VA 0.133A 16.0VA 0.224A 26.9VA

208V~ (ac) 0.030A 6.2VA 0.075A 15.6VA 0.111A 23.1VA

240V~ (ac) 0.035A 8.4VA 0.087A 20.9VA 0.128A 30.7VA

24VÎ (dc) 0.146A 3.5W 0.266A 6.4W 0.470A 11.3W

HG80-XABX-0000

HG1M-XACX-0000

HG2M-XADX-0000

1 Pole 2 Pole 3 Pole

Voltage Current Power Current Power Current Power

24V~ (ac) 0.930A 22.3VA 2.310A 55.4VA 5.060A 121.4VA

120V~ (ac) 0.195A 23.4VA 0.448A 53.8VA 0.968A 116.2VA

208V~ (ac) 0.097A 20.2VA 0.280A 58.2VA 0.482A 100.3VA

240V~ (ac) 0.112A 26.9VA 0.323A 77.5VA 0.563A 135.1VA

24VÎ (dc) 0.219A 5.2W 0.572A 13.7W 0.555A 13.3W

Field Coil Power Requirements

Watlow Series HG Mercury Displacement Relay User’s Manual 4

1 2 3 4 5 6

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