HE-V
–5–
ASCTB326E 201702-T
4) Condensation
Condensation forms when there is a
sudden change in temperature under
high temperature and high humidity
conditions. Condensation will cause
deterioration of the relay insulation.
5) Freezing
Condensation or other moisture may
freeze on the relay when the
temperatures is lower than 0°C 32°F. This
causes problems such as sticking of
movable parts or operational time lags.
6) Low temperature, low humidity
environments
The plastic becomes brittle if the relay is
exposed to a low temperature, low
humidity environment for long periods of
time.
3. Solder and cleaning conditions
1) Please obey the following conditions
when soldering automatically.
(1) Preheating: Max. 120°C 248°F
(solder surface terminal portion) and
within 120 seconds
(2) Soldering iron: 260°C±5°C
500°F±41°F (solder temperature) and
within 10 seconds (soldering time)
2) Please obey the following conditions
when manual soldering.
Max. 260°C 500°F (solder temperature)
and within 10 seconds (soldering time)
Max. 350°C 662°F (solder temperature)
and within 3 seconds (soldering time)
*Effects of soldering heat on the relays
vary depending on the PC board. So
please confirm actual soldering condition
with the PC board used for assembling.
3) Since this is not a sealed type relay, do
not clean it as is. Also, be careful not to
allow flux to overflow above the PC board
or enter the inside of the relay.
4. Cautions for use
1) For precautions regarding use and
explanations of technical terminology,
please refer to our web site.
(http://industrial.panasonic.com/ac/e/)
2) To ensure good operation, please keep
the voltage on the coil ends to ±5% (at
20°C 68°F) of the rated coil operation
voltage. Also, please be aware that the
pick-up voltage and drop-out voltage may
change depending on the temperature
and conditions of use.
3) Keep the ripple rate of the nominal coil
voltage below 5%.
And do not have a parallel connection
with diode for the purpose of coil surge
absorber. Instead of diode, a Varistor is
recommend for the absorber.
Recommended Varistor;
Maximum energy: more than 1J
Varistor voltage: 150 to 400% of nominal
voltage
4) The cycle lifetime is defined under the
standard test condition specified in the
JIS C5442 standard (temperature 15 to
35°C 59 to 95°F, humidity 25 to 75%).
Check this with the real device as it is
affected by coil driving circuit, load type,
activation frequency, ambient conditions
and other factors.
Especially, contact terminals have
polarity. So if the contact terminals were
connected with opposite pole, the electric
life would be shorter.
5) This value can change due to the
switching frequency, environmental
conditions, and desired reliability level,
therefore it is recommended to check this
with the actual load.
6) Heat, smoke, and even a fire may
occur if the relay is used in conditions
outside of the allowable ranges for the
coil ratings, contact ratings, operating
cycle lifetime, and other specifications.
Therefore, do not use the relay if these
ratings are exceeded.
7) If the relay has been dropped, the
appearance and characteristics should
always be checked before use.
8) Incorrect wiring may cause
unexpected events or the generation of
heat or flames.
9) The relay should not be installed near
strong magnetic field (transformers,
magnets, etc.) and should not be
installed near objects that radiate heat.
10) If the several relays are mounted
closely or a heat-generation object is
close to the relay, take care to check the
abnormal temperature-rise and the
insulation distance between the terminals
outside of the relay.
11) If you are using an inductive load (L
load) such that L/R > 1ms, add surge
protection in parallel with the inductive
load. If this is not done, the electrical life
will decrease and cut-off failure may
occur.
12) In case using a capacitive load (C-
load), please take a countermeasure as
pre-charging to the capacitive load so
that the inrush current will not surpass
40A. The relay might have a contact
welding without such countermeasure.
13) This relay is a high-voltage direct-
current switch. In its final breakdown
mode, it may lose the ability to provide
the proper cut-off. Therefore, do not
exceed the indicated switching capacity
and life. (Please treat the relay as a
product with limited life and replace it
when necessary.)
In the event that the relay loses cut-off
ability, there is a possibility that burning
may spread to surrounding parts, so
configure the layout so that the power is
turned off within one second and from the
point of view of safety, consider installing
a failsafe circuit in the device.
14) Please carry out the design which
had a enough margin in conductor width
and a space between conductors in the
case of a design of a printed circuit
board.
15) Contact terminals have polarity. So if
the contact terminals were connected
with opposite pole, the electric life would
be shorter. There is no polarity if they are
used for power distribution only.
