Marsh Bellofram Diversified Electronics Division SLA Series Phase Monitors - Marsh Bellofram - #1

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800.727.5646 atcdiversified.com Diversified Electronics SLA Series Phase Voltage Monitors // SLA Series 215 Ph as e M o n i t o r s The ATC Diversified SLA Series is designed to protect 3-phase equipment against PHASE LOSS, UNDER VOLTAGE, and PHASE REVERSAL conditions. With normal operating voltages applied in the proper ABC sequence, the internal relay will energize (PICK-UP). When incorrect phase sequence or phase loss occurs or the three-phase voltages fall below the drop out voltages, the relay will de-energize (DROP-OUT). On models featuring indicators, the LED glows when all line conditions are normal. Both Delta and Wye systems may be monitored. In Wye systems, connections to neutral are NOT required. For UL Listed units, with field wiring terminals, copper wire with 60°/ 75°C rating must be used for control circuitry connections. NOTE: When a phase is lost while the motor is running, a condition known as regeneration occurs where a voltage is induced into the open phase nearly equal in magnitude to the normal phase-to-phase voltage. However, with the exception of lightly loaded motors, enough change is detected by the SLA to provide the required protection when properly adjusted. STYLE “A” \\\SPECIFICATIONS DROP-OUT VOLTAGE 1 Ø Low 83% of Nominal 3 Ø Low 90% of Nominal RESPONSE TIMES STYLE “A” & “E” Models Up to 300 VAC Operate 250 mSEC Release 0.5 SEC Models Over 300 VAC Operate 1.0 SEC Release 2.0 SEC RESPONSE TIMES STYLE “N” Operate 60 mSEC Release 0.5 SEC POWER REQUIRED Style “A” 3 VA (approx.) Style “E” Models up to 300 VAC: 3 VA (max.) Models over 300 VAC: 7 VA (max.) Models over 500 VAC: 3 VA (max.) Style “N” 3 VA (max.) OPERATING VOLTAGE See Ordering Information RESET Automatic (Manual Optional) INDICATOR LED Glows when all conditions are Normal (On Applicable Models) OUTPUT RATING SPDT (style “A” and “N”) DPDT (style “E”) PHASE SEQUENCE ABC (Will Not Operate CBA) TEMPERATURE RATING Operate 32° to +131°F (0° to +55°C) Storage -49° to 185°F (-45° to +85°C) U.S. PATENT NUMBER 3,611,050 WEIGHT Style “A” NET: 2.24 oz Shipping: 2.56 oz Style “E” NET: 4.8 oz Shipping: 5.76 oz Style “N” NET: 5.3 oz Shipping: 5.6 oz • Air Handlers • Computer Power Protection • Conveyor Drive • Water Waste & Sewage Machinery • Oil & Gas Pumps • Sawmill & Woodpump Machinery • Power Substation • Automatic Transfer Switching for Monitoring Emergency Power Supplies • Irrigation Pumps • Lift Station Pumps • Robotics Equipment • Elevator Drives • Commercial/Industrial Air Conditioning & Refrigeration Compressors MODEL NUMBER >>>>>> SLA A Operating Voltage F A R See Ordering Information Type of Operation Fixed Lock Shaft Adjusted L Screwdriver Adjusted S Enclosure Style Octal Plug-In, Dust Cover Blade Plug-In, Dust Cover B Surface Mounted, #8 Screw Terminals E Surface Mounted, 1/4" Quick Disconnect Terminals N Options Add R Suffix when manual reset is required, (available only in style “E” enclosure) Plug-In models are UL listed only when used with RB-08 relay socket. U STYLE “E” STYLE “N” • Available up to 480 VAC • Delta or Wye Systems • Fixed, Lock Shaft, or Screwdriver Adjustment • Several Enclosure Styles PROTECTS 3-PHASE EQUIPMENT AGAINST: • Phase Loss • Under Voltage • Phase Reversal TYPICAL APPLICATIONS: