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 168 z 1090

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Coil Resistance This the resistance the coil DC type relays for the temperature conditions listed the catalog. Nominal Power VA) Nominal Voltage Nominal Current. CONTACTS (secondary output) 1. The contact resistance measured using the voltage-drop method shown below. 2. Nominal Operating Power The value power used the coil at nominal voltage. 5. 4. Maximum Applied Voltage The maximum voltage that can be applied continuously the coil without causing damage. Coil Designation Single side stable type 2. 7. Contact Forms Denotes the contact mechanism and number contacts the contact circuit.) 6.DEFINITION RELAY TERMINOLOGY COIL (also referred primary input) 1. AC and voltage maximums will differ in most cases. This value is the product switching voltage x switching current, and will lower than the maximum voltage and maximum current product. 3. 8. 6. . Maximum Switching Voltage The maximum open circuit voltage which can safely switched the contacts. and DC current maximums may differ. Pick-Up Voltage As the voltage unoperated relay is increased, the value below which all contacts must function (transfer). Maximum Switching Current The maximum current which can safely be switched the contacts. In general, for relays with contact rating of more, measure using the voltage-drop method DC. Maximum Switching Power The upper limit power which can be switched the contacts.C. Measured contact R Power source ); Ammeter Voltmeter ( (AC DC) ): Variable resister Test Currents Rated Contact urrent Test urrent Switching urrent (A) (mA) 1 more 1,000 The resistance can measured with reasonable accuracy YHP 4328A milliohmmeter. Maximum Carrying Current The maximum current which after closing or prior opening, the contacts can safely pass without being subject to temperature rise excess their design limit, the design limit other temperature sensitive components the relay (coil, springs, insulation, etc. (Note that for certain types relays, the resistance may be for temperatures other than the standard 20°C 68°F. Short duration spikes of a higher voltage may tolerable, but this should not assumed without first checking with the manufacturer. Drop-Out Voltage As the voltage operated relay is decreased, the value above which all contacts must revert their unoperated position. The measuring currents are designated. Nominal Operating Current The value current flow the coil when nominal voltage impressed the coil 4. 5. Contact Symbols Form contacts (norm ally open contacts) ^ Form contacts (norm ally closed contacts) 6 Form contacts (changeover contacts) £> ^ Form contacts are also called N. contacts break contacts. Form contacts are also called changeover contacts transfer contacts. Contact Resistance This value the combined resistance of the resistance when the contacts are touching each other, the resistance the terminals and contact spring. 7. Care should be taken not exceed this value. contacts make contacts.O.). Form contacts are also called N. Rated Switching Power The design value watts (DC) volt amperes (AC) which can safely be switched the contacts. This value usually excess the maximum switching current. 8. For coils expressed in watts; expressed volt amperes. ds_x61_en_relay_technical_information_010113J 167 V A TechnicalInfo. 3. Nominal Coil Voltage (Rated Coil Voltage) A single value (or narrow range) of source voltage intended design be applied the coil input