8181980000 Weidmuller, 8181980000 Datasheet - Page 4

• Manufacturer Part Number: 8181980000
• Description: TERM DK45 TS35 24VDC SPDT
• Manufacturer: Weidmuller

Specifications of 8181980000

• Relay Type: General Purpose
• Contact Form: SPDT (1 Form C)
• Contact Rating (current): 5A
• Switching Voltage: 250VAC
• Coil Type: Standard
• Coil Current: 11.5mA
• Coil Voltage: 24VDC
• Mounting Type: DIN Rail
• Termination Style: Screw Terminal
• Circuit: SPDT (1 Form C)
• Contact Rating @ Voltage: 5A @ 250VAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Control On Voltage (max): -
• Control Off Voltage (min): -
• Other names: DK45/35 24VDC SPDT

Protective separation
All equipment required to guarantee "pro-
tective separation" must be constructed in
such a way that, for example, a mechani-
cal defect cannot reduce the level of insu-
lation. In the case of a relay, this means
that if a mechanical defect occurs (bent
solder pin, break in winding conductor or
broken spring), "protective separation"
must be guaranteed.
Relays are specified and tested according
to IEC 255 and VDE 0435. Neither stan-
dard contains any reference to
EN 50 178 (Equipping power installations
with electronic equipment) nor is "protec-
tive separation" defined. To compound
matters the test voltages quoted for the
relays are based on different measurement
conditions. The test voltages cannot be
applied to EN 50 178 or DIN VDE 0106
Part 101. As more and more users employ
only equipment that guarantees "protec-
tive separation", a lot of manufacturers of
relays refer to DIN VDE 0106 and test their
products accordingly. Consequently, the
quoted values correspond to the require-
ments for "protective separation".
Standards
The following standards are fulfilled:
EN 50 178
Equipping power installations with elec-
tronic equipment
DIN VDE 0106 Part 101
Protection against flow of dangerous cur-
rents through the human body; basic
requirements for protective separation
within electrical equipment.
DIN VDE 0109
Insulation co-ordination within low-voltage
system including clearance and creepage
distances for assembled PCBs.
DIN VDE 0435
Electrical relays, all-or-nothing relays
Definition of Technical Data
Input circuit
Input voltage [V]
Input current [mA]
Rated power consumption [W/VA]
Pull-in voltage [V]
Pick-up current [mA]
Pull-in power [W/VA]
Drop-out voltage [V]
Self reset current [mA]
Output circuit
Output voltage [V]
Switching current [A]
Continuous current [A]
Switching power [W/VA]
Min. switching power [mW]
Service life
Pick-up lag [ms]
Drop-out lag [ms]
Contact bounce time [ms]
Switching frequency [Hz]
Withstand voltage [kV]
Reliable separation
Electric arc
Contact wear
Spark absorption
Reduction factor
Reference voltage at which the relay coupler operates.
Typical reference voltages:
=> 5 V DC, 12, 24, 48, 60, 115, 230 V AC/DC
Quotient resulting from input voltage and input resistance.
Input resistance
=> coil resistance + resistance of drive (R, LED, rect. …)
Input voltage x input current AC/DC
with tolerance of +/- 10% or +5/-15%
Typical range for relay coupler:
250 mW > Pv > 1 W 0.4 VA > Pv > 1.2 VA
Smallest input voltage that relay coupler requires
in order to respond
(T
Smallest input current required to switch relay
from inoperative to operating position
(T
Product of pull-in voltage and pick-up current
Voltage level at which relay has definitely released
Input current level at which relay has definitely released
Max. voltage that can be applied to relay contact
Current that can flow for max. of 4 sec.
after relay contact has closed
Current that flows continuously after contact has closed
Product of output voltage and switching current
with resistive, inductive and capacitive load
Smallest amount of power that can be
switched via contact
Number of switching operations before contact fails
- mechanical => with no electric load
- electrical => with resistive or inductive AC/DC load
Length of time from application of energizing voltage
until contact closes/opens
Length of time from breaking the energizing circuit
until contact closes/opens
Length of time between first and last closing/opening
of contact when relay picks up or drops out
Switching operations per sec.
with a duty factor of 1 : 2 (t
Max. test voltage between input and output circuits
which does not cause any discharge
Feature of relay coupler that conform
to VDE 0160 and VDE 0106 Part 101
Current flow between contact surfaces
as they open, caused by ionization
Switching inductive loads leads to considerable
changes in the composition of the materials used.
The results are:
=> formation of pits or peaks on the surface of contacts
=> failure due to interlocking of contacts
Limitation of transient overvoltages by connecting
supplementary circuit across inductive loads
=> RC combinations
=> Z-diodes/suppressor diodes
=> varistors
Factor by which service life is reduced
when switching inductive loads
amb
amb
= 293 K)
= 293 K)
on
= t
off
)
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