MODEL HM31 SERIES Encapsulated Current Sense Transformers FEATURES AND BENEFITS • • • • • Complies with VDE safety agency requirements Excellent temperature characteristics Encapsulating technique used to ensure long term reliability Excellent linearity (current vs. output voltage) Custom designs available APPLICATIONS • • • • • • Switching power supply Designed to detect AC current and to supply the output for control circuitry Appliances Medical equipment Office equipment Frequency ranges 20kHz and above 6 ELECTRICAL / ENVIRONMENTAL Insulation Resistance, Minimum Operating Temperature Range Dielectric Withstanding Voltage 100 Megohms -25°C to +105°C 4.2 kV Pri to Sec Specifications subject to change without notice. 6-75 Model HM31 Series FIGURE 2 (Inch/mm) FIGURE 1 (Inch/mm) .80 Max. 20 .80 Max. 20 .50±.010 12.76±0.25 (1) .54 Max. 13.7 (3) .400±.010 10.16±0.25 .180 Min. 4.57 Dia. .80 Max. 20 .14 1.6 .030±.002 Dia. 0.76±0.05 Solderable Pin, Typical .250 6.35 .65 Min. 16.5 .475±.010 12.07±0.25 (2) .375 9.53 Max. .67 17 Max. .60 Max. 15 .50±.010 12.76±0.25 (1) (4) .90 Max. 23 (2) .030±.002 Dia. 0.76±0.05 Solderable Flexible Pin Typical (3) Bottom View FIGURE 3 (Inch/mm) FIGURE 2A LOW COST (Inch/mm) .378 9.6 Max. .69 17.5 Max. .90 Max. 23 .195 Min. 5.0 Dia. .866 Max. 22 .250 6.35 .157±.04 4±1.0 .50±.010 12.76±0.25 .70 Max. 18 .70 18 Max. .20 5.08 Min. .031 Dia. 0.8 Solderable Rigid Pin Typical .50±.010 12.76±0.25 .70±.010 17.78±0.25 (2) (5) (4) (1) (2) (3) (1) 6-76 (3) Leads 1 & 2: .051±.003 Dia. 1.30±0.08 Leads 3, 4 & 5 .030±.002 Dia. 0.76±0.05 Model HM31 Series SCHEMATICS Schematic A (1) (3) Schematic B Schematic C (1) (1) Schematic D (1) (3) (2) (2) (3) (5) (4) (3) (5) (2) SPECIFICATIONS Part Number Turns Ratio ±1% or ±1 turn whichever is greater Secondary Inductance @ 10 kHz mH min. Secondary DC Resistance Ω Max. Schematic Figure Secondary V-µS Max. Current 1 Turn Primary Amps HM31-10050 1:50 5 0.7 A 1 300 5 HM31-10100 1:100 20 1.4 A 1 600 5 HM31-20050 1:50 5 0.7 B 2 330 20 HM31-20100 1:100 20 1.4 B 2 660 20 HM31-20200 1:200 85 4.5 B 2 1,300 20 HM31-21050 1:25:25 1.3 0.7 C 2 150 20 20 HM31-21100 1:50:50 5 1.4 C 2 330 HM31-21200 1:100:100 20 4.5 C 2 660 20 HM31-20050L 1:50 5 0.7 B 2A 330 20 HM31-20100L 1:100 20 1.4 B 2A 660 20 HM31-20200L 1:200 85 4.5 B 2A 1300 20 HM31-21050L 1:25:25 1.3 0.7 C 2A 150 20 HM31-21100L 1:50:50 5 1.4 C 2A 330 20 HM31-21200L 1:100:100 20 4.5 C 2A 660 20 HM31-30050 1:50 5 0.7 A 3 330 20 HM31-30100 1:100 20 1.4 A 3 660 20 HM31-30200 1:200 85 4.5 A 3 1,300 20 HM31-30300 1:300 195 11.0 A 3 2,000 20 HM31-31050 1:25:25 1.3 0.7 D 3 160 20 HM31-31100 1:50:50 5 1.4 D 3 330 20 HM31-31200 1:100:100 20 4.5 D 3 660 20 HM31-31300 1:150:150 48 11.0 D 3 1,000 20 6-77 Model HM31 Series 6