Naming Rule
The difference between zero-crossing SSR and random SSR
When an effective control signal is applied to the input
end, the output end of the random SSR is immediately switched on (the speed is
microsecond), while the zero-crossing SSR is switched on only when the load
voltage crosses the zero region (about ±15V). When the control signal is
withdrawn at the input end, both the zero-crossing type and random type SSR are
turned off when the current is less than the maintenance current.
The reaction speed of the SSR is fast, the phase-shift
trigger pulse can be controlled, and the voltage of the AC network can be
easily changed, so that it can be applied to the precise temperature
adjustment, dimming and other resistive loads and some inductive loads.
The zero-crossing SSR causes a maximum delay of half a
cycle, but it reduces the impact on the load and generates RF interference.
Therefore, it is most widely used in the "single-pole single-throw"
switch.
Technical specification
|
PDH-38□DA
|
PDH-48□DA
|
PDH-66□DA
|
PDH-120□DA
|
|
Load current
|
10A, 15A, 25A, 40A, 50A, 60A, 75A, 80A, 90A, 100A,
120A
|
|
Load voltage
|
24-380 VAC
|
24-480 VAC
|
24-660 VAC
|
24-1200 VAC
|
|
Control
voltage
|
3-32 VDC
|
|
Control
current
|
DC 3-25 mA
|
|
On-state
voltage drop
|
≤1.3 VAC
|
|
Leakage
current in OFF state
|
≤2 mA
|
|
ON/OFF time
delay
|
≤10 mS
|
|
Dielectric
strength
|
≥ 2500 VAC
|
|
Insulation
strength
|
1000 MΩ/500 VDC
|
|
Operating
temperature
|
-30~+75℃
|
|
Mounting
|
With screws on a plate
|
|
Indication
|
LED
|
|
Weight
|
90g (10A -
25A), 135g ( 40A and above )
|
□ is the number of load currents. For example, for model PDH-3810DA, the □ is replaced by 10, indicating that the load current of model PDH-3810DA is 10A.
Notes :
1. The load current is 10A, must be equipped with radiator. The load current is 40A or higher, fan or water cooling must be configured.
2. The load is inductive load, it is necessary to parallel a varistor at the output end, its value is 1.6-1.9 times the load voltage.
Dimension figure and wiring diagram
①=240VAC: PDH-38□DA
①=480VAC: PDH-48□DA
①=660VAC: PDH-66□DA
①=1200VAC: PDH-120□DA
Product Features
1. Long life and high
reliability;
2. Good sensitivity,
small control power, good electromagnetic compatibility;
3. Quick conversion;
4. Small
electromagnetic interference.
5. Input current is small
6. No noise.
Product application
The products can be
used in computer peripheral interface equipment, electric furnace heating,
constant temperature equipment, CNC machinery, industrial automation equipment,
signal lamp, stage lighting control equipment instrumentation, medical
equipment, copier, plastic machinery, air conditioning, washing machine. In
addition, it is widely used in chemical industry, coal mine and other
explosion-proof, moisture-proof, anti-corrosion occasions, so it is an ideal
product to replace electromagnetic relays and AC contactors.
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