One, overview of ZK - -W3type silicon controlled voltage regulator using SCM technology, can not change the wiring in case of online switched phase shift or zero work way, via the one-way or two-way silicon controlled rectifier to the load on the electric heating power regulation for the best.

As select phase-shifting trigger mode, regulator with continuous change of load on each work waveform of valid values to change the heating power, has the advantages of balanced system, the voltage across the load is low, can prolong the service life of the heater, also can be common magnetoelectric meter as the load voltage, load current instructions. On the voltage without mutation or flicker disturbance.

Such as the choice of the zero trigger mode, the regulator with increase in unit time load complete power waveform to change per unit of time ( cycle time ) average heating power, using a pulsating way of regulating heating power, the controllable silicon voltage zero crossing slightly after conducting, so the switching losses and RF interference are small, but cannot with magnetoelectric meter as the load voltage and current detection.

As the cold resistance of the load is very low, but the need to zero mode of control, may be due to the initial heating of large current and the damage of silicon control, you can" manual " phase shifter output mode soft start. The first phase of small current to the load to be manually adjusted, the value of the load resistor for temperature rises to the controlled silicon allows the current value, and then switch to the zero crossing method. In such a way as to ensure the security of the system, and can reach the aim of zero passed control.

In short, ZK / -W3 type silicon controlled voltage regulator has the versatility, wide applicability, convenient installation, reliable use and other characteristics, can be widely used in various electric heating furnace with high precision temperature control.

Two, features

1according to the two meter output format will input switching into 0 ～10mA and4～ 20mA. In a variety of trigger mode are not connected, allows the load line. Fully reflects the monolithic computer

Products of intelligent function. Is a universal thyristor device.

2regulator using high brightness digital tube output instructions, easy remote reading. Shock resistance performance is good, strong anti interference capability.

3" feedback" quantity adjustment potentiometer is arranged in the panel, professionals may be considered as" output limiting" use, quality and safety factor can obtain upgrade.

4. If necessary, in short circuit load or over current, instrument can be in 1 ～2frequency automatically shut down the trigger signal of the controlled silicon, the silicon controlled interception from damage, at the same time having a negative

Load short circuit indication function, short circuit protection values from the user external current transformer (optional ) decision.

In three, the main technical indicators

The 1 input signal:0～ 10mA ( impedance 800 ohms ); from 4 to 20mA ( impedance 250 ohms ) rear switch

The 2 output mode: trigger or zero trigger ( panel switch )

The 3 output pulse amplitude output width:≥ 3V,≥ 50 μ s three-phase six trigger signal

4: no midline output pulse width of about 3800 μ s three-phase six trigger signal

5phase shift trigger maximum conduction angle : 150°

6zero trigger cycle time:2S ±0.5s

A 7 over-current protection current ( special order ): by the external current transformer specifications decision ( without current transformer without over-current protection function)

8: default working power supply for AC 220V± 15%50Hz ±1Hz about 10VA380V AC voltage; in other orders in that

In particular: the regulator to control working power supply and the load power is fully consistent. Any phase shall be in strict accordance with the provisions of the phase sequence connection diagram, or because the phase inconsistency caused a phase voltage can not be completely opened or output jitter.