RELAYS Panasonic

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Panasonic is part of a large worldwide groupselling relays and associated switching products under different brand names in different territories.The conditions of use in some territories may differ from those customary in Europe. In particular there are often major differences in regard to national and international specifications, such as UL, CSA, VDE, SEV, EVE, SEMKO, etc. Thus, when considering contact loads as stated in this catalogue (e.g. 10 A, 30 VDC for the SP relay) its hould be understood that these values are not necessarily an absolute maximum but tested ratings. Mostly the stated value has been tested for a certain life expectancy as stated by the manufacturer or the respective test house. Thus, under different conditions, the stated “maximum” may, in practice, be safely exceeded.

Vydal: Panasonic Electric Works Czech s.r.o. Autor: Panasonic

Strana 944 z 1090

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The sm aller the magnitude, the better the relay. e 1 tio l The acceleration which can tolerated by the relay during service without causing the closed contacts open for more than the specified time.W . 3 ife The minimum num ber tim the relay can operated under nominal conditions (coil voltage, temperature, humidity, etc. when there is reflected wave. tio n High frequency signals leak through the stray capacitance across contacts even if the contacts are separated. (usually ps) 2 tiv e The acceleration which can withstood by the relay during shipping installation without suffering damage, and without causing change its operating characteristics. Except where otherwise specified, the tests above are conducted under standard tem perature and humidity (15°C 35°C 59°F 95°F, to 75%). Therefore, this refers the magnitude loss the input signal. However, test was performed total of times, six tim each three-axis directions.6A The life expectancy 300,000 operations. (Voltage Standing ave Ratio) High frequency resonance generated from the interference between the input signal and reflected (wave) signal. L ife e HIGH FREQUENCY CHARACTERISTICS 1. 2 tiv e The vibration which can withstood by the relay during shipping, installation or use without suffering damage, and without causing change its operating characteristics. For example, for relay operating at: Switching voltage 125V AC Switching current 0. However, test was performed total six hours, two hours each three-axis directions.R. Usually expressed in “G”s. 4 ife The minimum num ber tim the relay can operated under nominal conditions with specific load being switched the contacts. 3. V. 6. Expressed an acceleration G's displacement, and frequency range. The life (num ber of operations) can estimated from the switching voltage and switching current. However, this value for a resistive load. The phase the load operation is random. The larger the magnitude, the better the isolation. The V. ds_x61_en_relay_technical_information_090712D. sure carefully check the actual load before use.S. usually becomes greater than 1.R.) with load the contacts. This expressed the logarithm the magnitude ratio the signal generated the leak with respect to the input signal. This leak is called isolation. 2 e 1) tio l The vibration which can tolerated by the relay during service, without causing the closed contacts open for more than the specified time.S. The coil impressed voltage the switching tests rectangular wave at the rated voltage. 3 . 2. The symbol (decibel) is used express the magnitude the leak signal. 5 y This refers the maxim switching frequency which satisfies the mechanical life electrical life under repeated operations applying pulse train at the rated voltage the operating coil. refers the ratio the maximum value minimum value the waveform. N : 1. ife e This listed the data column for each type relay. 2 tio s At the high frequency region, signal disturbance occurs from self-induction, resistance, and dielectric loss well as from reflection due impedance mismatching circuits.Definition Relay Terminology MECHANICAL PERFORMANCE AND LIFE 1. Loss due any of these types disturbances called insertion loss.W