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NR-HD-5 Datasheet(PDF) 6 Page - Nais(Matsushita Electric Works) |
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NR-HD-5 Datasheet(HTML) 6 Page - Nais(Matsushita Electric Works) |
6 / 8 page NR 117 The following is life data under our HP2 relay load. (Notes) 1. When inrush current occurs in the capacitor load circuit or incandescent lamp load circuit, reduce it to less than 5 A. Electrical life of "AuCo" contact types is 10,000 operations in a 5 A inrush current circuit. 2. When 5 A to 10 A inrush current occurs in the capacitor load circuit or incandescent lamp load circuit, the use of power types is recommended. Contact voltage Contact current Contact protection circuit Operating speed Expected life, min. op. 6 V DC 232 mA 0.2 µF + 1kΩ or diode 2 op./s 3 ×107 12 V DC 106 mA 0.2 µF + 1kΩ or diode 2 op./s 3 ×107 24 V DC 54 mA 0.1 µF + 1kΩ or diode 2 op./s 3 ×107 100 V DC 15 mA 0.1 µF + 1kΩ or diode 2 op./s 2 ×107 24 V DC 80 mA 0.2 µF + 1kΩ 2 op./s 3 ×107 100 V DC 20 mA 0.1 µF + 1kΩ or varistor 2 op./s 2 ×107 200 V DC 10 mA 0.1 µF + 1kΩ 2 op./s 2 ×107 2 coil latching types A) The circuit at right is recommended when using one coil for latching and the other coil for reset. NR relays are sensitive enough to be op- erated by the discharge of energy accu- mulated in the inner-coil capacitance. The use of a diode of over 200 V breakdown will prevent misoperation from this source. In order to maintain the insulation be- tween the two coils, connection of the ter- minal No. 3 and No. 6 or the terminal No. 2 and No. 5 is recommended, as shown in the right figure. Rectifiers should be inserted in this circuit when the nominal coil voltage of the NR relay is more than 24 V DC. B) No damage will occur to the coil of ei- ther the one or two coil latching types even if the operating voltage is as much as 2 or 3 times the nominal coil voltage. C) If separate pulses are applied to each coil of the 2 coil latching types, the first pulse will operate when the pulses are of equal voltage. When voltages differ the higher voltage will cause operation pro- vided the voltage difference is greater than the measured pick-up voltage. Volt- age difference on the coils will reduce contact pressure proportionately. Continuous bias voltage after an operat- ing pulse lowers contact pressure and vi- bration resistance. bias voltage coil coil Ripple factor Coils should be operated on pure DC. Rectified AC may cause changes in the pick-up/drop-out characteristics because of the ripple factor. Use of a capacitor in the circuit is recommended to keep the ripple factor below 5%. : relay E min. E max. E mean DC component Pulsating component capacitor (ripple filter) R R To calculate the ripple factor Ripple factor (%) = × 100% E max. = max. value of pulsating component E min. = min. value of pulsating component E mean - average value DC component E max. – E min. E mean When designing NR relay circuits Care should be taken when designing re- lay circuits since the response of the relay is so fast that bouncing or chattering from conventional relays in the circuit may cause false operation. When using long lead wires When long wires (as long as 100 m or more) are to be used, the use of resis- tance (10 to 50 Ω) in series with the con- tact is required in order to eliminate the effect of the possible inrush current due to the stray capacitance existing between the two wires or between the wire and ground. Contact of NR relay Lead wire + Energy accumulated in static capacitance (100 to 300 m) 10 to 50 Ω (Equivalent circuit) |
Similar Part No. - NR-HD-5 |
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Similar Description - NR-HD-5 |
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