Shape size：160mm*80mm*130mm

1. Introduction

ZK type SCR voltage regulator is used with SCR, it can adjust the load heating power, phase-shifting triggering mode have  depth voltage negative feedback, so it has a good adjustment linear, the impact of network fluctuating will be the smallest. Zero-crossing triggering mode’s instrument design have network voltage fluctuation compensation function, it can stabilize different power voltage heating power

2. Characteristics

2.1  Design newly，on the plane built-in big ammeter is for output indication, legible to read and adjust the machine to zero. The instrument’s depth cut normal production down to half than, weight lighten 2kg, shock-resistant feature is good，anti-jamming ability is strong.

2.2 When load is short circuit or overcurrent，the instrument can close automatically SCR’s  trigger signal in 1～2 period，let SCR carry current and protect from damage，at the same time it have indication function when load is short circuit.

2.3 Directly get synchronizing signals from the network, applies to the  " Y " method connection,  control is stable and reliable.

3. Model explanation: ZK type SCR voltage (average power ) regulator

Size unit（ mm）           Exterior size       Install size              Exterior size        Install size

  Single phase voltage regulator ZK-1：160×80×130； 152×76； ZKA-1：96×96×130； 92×92   

Three phases voltage regulator  ZK-3：160×80×130；152×76； ZKA-3：96×96×130； 92×92  

4. Main technical indicators：

4.1 Input signal：0~10mA（Input Impedance 800Ω）or 4～20mA（Input Impedance 250Ω）;

4.2 Output pulse：Amplitude value is not less than 3V、Width is not less than 50uS (20Ω load);

4.3 Phase - shift trigger maximum conduction angle：not less than 150°;

4.4 Working environment：

Temperature: 0～50℃，relative humidity≤85％，without corrode and strong electric radiation;

4.5 Power supply：AC220V±15%, 50Hz about 3VA

4.6 Weight：about 0.8Kg

5. Installation：

5.1 Inspect the instrument accessories：two mounting screws、two mounting boards；

5.2 Connect input、output（SCR control electrode’s G1、G2 and K）1、K2）、feedback、power、ground and furnace wires according to the specification.

5.3 When adopt “Ｙ” method connection，SCR’s resist pressure must be over 600V. SCR’s rated current must be more than  1.5 times of practical using electric currents. SCR must be used with  radiator of area big enough, and pay attention to air ventilation，assure that SCR’s temperature does not excees120℃ under any condition. When control method is  half-controlled, diode’s resist pressure、current index are as single phase SCR.

5.4 Three fuses  (connected serially SCR’s anode ) need connect phase line input terminal, and shall not connect other locations.

5.5 If the SCR’s radiator is alive, when install, you  should give full consideration to prevent getting an electric shock and short circuit between SCR.

5.6 If connect amperemeter, you must connect serially SCR’s anode, don’t let the trigger signal move through amperemeter.

5.7 Every SCR’s trigger signal line and other wires should be separate wiring, prevent interfereing with each other and lead to  SCR trigger losing control.