8952130000 Weidmuller, 8952130000 Datasheet - Page 5

• Manufacturer Part Number: 8952130000
• Description: SSR, DIN RAIL, 520VAC, 30VDC/30VAC, 20A
• Manufacturer: Weidmuller

Specifications of 8952130000

• Control Voltage Type: DC
• Control Voltage Range: 8VDC To 30VDC / 10VAC To 30VAC
• Operating Voltage Range: 24VAC To 520VAC
• Peak Surge Current: 250A
• Load Current: 20A
• Switching Mode: Zero Cross
• Rohs Compliant: No

As a consequence, the test voltages cannot be applied to the
standards EN 50178 or EN 61140. And because the user is ne-
vertheless increasingly deploying electrical equipment that is
supposed to guarantee ‘protective separation’, a large number
of manufacturers of relays point to the EN 61140 and carry out
the tests accordingly. And of course the values are then ‘protec-
tive separation’ conform.
Standards
The following individual standards are applied in accordance
with the corresponding requirements:
Relay couplers
• DIN EN 50178:
Relays
• DIN EN 61810-1:
Relay base
• DIN EN 61984
EMC – Electromagnetic compatibility
DIN EN 61000-6-1
Part 6-1: Generic standards; Immunity for residential, commerci-
al and light-industrial environments
DIN EN 61000-6-2
Part 6-2: Generic standards - Immunity for industrial environ-
ments
DIN EN 61000-6-3
Part 6-3: Generic standards - Emission standard for residential,
commercial and light-industrial environments
DIN EN 61000-6-4
Part 6-4: Generic standards - Emission standard for industrial
environments
Electronic equipment for use in power installations
Electromechanical elementary relays (electromechanical
elementary relays without specified time response charac-
teristics)
Part 1: General and safety requirements
Connectors - Safety requirements and tests
Coil suppression circuit
In DC circuits, the inductance of the relay coil generates a relea-
se voltage when de-energised that is capable of damaging or
destroying the connected control electronics. A free wheel
diode connected in parallel to the coil limits the release voltage,
protects the control electronics and prevents induction of the
cut-off voltage to other signal lines.
Large circuits or long cable runs are subjected to increased elec-
trical and electromechanical interference and damage. Malfunc-
tions or even total failure of the relay module can result. The ra-
diated interference, and not to forget leakage currents
emanating from trigger modules, can also mean that a triggered
relay does not drop out. As standards specify that the drop-out
voltage is limited to about 15 percent of the rated voltage, the in-
terference voltage generated can be sufficient to prevent the re-
lay from opening. One way of resolving this problem is to
connect an RC combination line side to filter out disturbances
and provide capacitive suppression of interference voltages.
MICROSERIES products are supplied ex works with these pro-
tective circuits already integrated in the electronics; for the
PLUGSERIES and RIDERSERIES these are available as modular
series electronics.
The same principles apply as with contact protection circuits.
Relays – overview
C.5
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