Marsh Bellofram Diversified Electronics Division SLE Series Phase Monitor - Marsh Bellofram - #1

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• Models Available up to 480 VAC PROTECTS 3-PHASE EQUIPMENT AGAINST: • Phase Loss • Under Voltage • Phase Unbalance LOCK SHAFT ADJUSTMENT FOR: • Phase Unbalanced Percent • Under Voltage Drop Out • Automatic Reset • Delta or Wye Systems SLE Series Diversified Electronics atcdiversified.com 800.727.5646 224 Phase Voltage Monitors // SLE Series The SLE Series is designed to protect 3-phase equipment against Phase Unbalance, Phase Loss, and Under Voltage. With normal operating voltage present on all three phases, the internal relay will energize (PICK-UP). When a phase loss occurs or the voltages fall outside the preset unbalance or under voltage settings, the internal relay will de-energize (DROP-OUT). The relay automatically resets when the line conditions return to normal. Both Delta and Wye systems may be monitored. In Wye Systems, connections to neutral are not required. 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. The SLE series is designed to detect this condition when properly adjusted. P h a s e M o n i t o r \\\OPERATION \\\DIMENSIONS (INCHES) \\\WIRING MODEL NUMBER OPERATING VOLTAGE UNDER VOLTAGE DROP-OUT RANGE POWER REQUIRED HYSTERESIS OUTPUT RATING SLE-120-ALE 120 VAC 95-115 Adj. 3 VA Max. 5 VAC DPDT, 5 Amps, Resistive; 345 VA, SLE-230-ALE 208/240 VAC 185-230 Adj. Inductive @ 240 VAC SLE-380-ALE 380 VAC 315-390 Adj. 7 VA Max. 10 VAC DPDT, 3 Amps, Resistive; 360 VA, SLE-440-ALE 440/480 VAC 370-460 Adj. Inductive @ 600 VAC All voltage referenced are phase-to-phase. \\\SPECIFICATIONS OPERATING VOLTAGE See Table Below TRANSIENT PROTECTION 1000 Volts For 8 mSEC RESET Automatic PHASE UNBALANCE RANGE 2% to 10%, Adjustable INDICATORS LED Glows When All Conditions Are Normal RESPONSE TIMES MODELS UP TO 300 VAC Operate 60 Milliseconds Release 0.5 Seconds RESPONSE TIMES MODELS OVER 300 VAC Operate 1 Second Release 2 Seconds TEMPERATURE RATING Operate 32° to +131°F (0° to +55°C) Storage -49° to 185°F (-45° to +85°C) U.S. PATENT NUMBER 4,331,995 WEIGHT 12.5 to 13 oz.