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.
tio n
state.
contacts break contacts.)
ds_x61_en_relay_technical_information_090712D.
The switching current and switching
voltage can obtained from this graph.
3 ts
Abbreviation for ake-before-break
contacts.
7 r
The upper limit power which can be
switched the contacts.C.Definition Relay Terminology
DEFINITION RELAY TERMINOLOGY
COIL (also referred primary input)
1.
5 lta e
The maxim open circuit voltage which
can safely switched the contacts.
8 ity
This listed the data column for each
type relay the maximum value the
contact capacity and an
interrelationship the maximum
switching power, maximum switching
voltage, and maxim switching current. lta e
(Release Must Release Voltage)
As the voltage operated relay is
decreased, the value above which
all contacts must revert their
unoperated position.
Form contacts are also called N.
4 r
The design value watts (DC) volt
amperes (AC) which can safely be
switched the contacts.
AC and voltage aximums will differ
in most cases. s
Denotes the contact mechanism and
number contacts the contact circuit. For coils expressed
in watts; expressed volt amperes.
8.
contacts make contacts.
7. Therefore, the coil symbol is
also shown for the reset coil its reset
state. and DC
current maximums may differ.
For example, the switching voltage is
fixed certain application, the
maximum switching current can be
obtained from the intersection between
the voltage the axis and the maximum
switching power.
2 lta e
(Rated Coil Voltage)
A single value (or narrow range) of
source voltage intended design be
applied the coil input.O. lta e
The maximum voltage that can be
applied continuously the coil without
causing damage. sure carefully
check the actual load before use. Short duration spikes of
a higher voltage may tolerable, but
this should not assumed without first
checking with the manufacturer.
2 ls
Form contacts
(norm ally open contacts) ,
Form contacts
• 6
(norm ally closed contacts)
Form contacts
(changeover contacts)
£> ^
Form contacts are also called N. This value is
the product switching voltage x
switching current, and will lower than
the maxim voltage and maximum
current product. For latching relays, schematic
diagrams generally show the coil its
reset state.)
6 lta e
(Pull-In Voltage ust Operate Voltage)
increased, the value below which all
contacts must function (transfer).
Nominal Power VA) Nominal
Voltage Nominal Current.
(*M axim switching capacity given
for resistive load. (Note that for certain
types relays, the resistance may
be for tem peratures other than the
standard 20°C 68°F.
6 t
The maximum current which can safely
be switched the contacts.
The value power used the coil at
nominal voltage.
5 e
This the resistance the coil DC
type relays for the tem perature conditions
listed the catalog. Care should be
taken not exceed this value.
M itc ity
Example: Using relay switching
voltage 60V DC, the maximum
switching current 1A. Contact mechanism where
Form contacts (norm ally open
contacts) close before Form contacts
open (norm ally closed contacts).
3 tin t
The value current flow the coil when
nominal voltage impressed the coil.
Form contacts are also called
changeover contacts transfer contacts.
CONTACTS (secondary output)
1
