Static Switch Circuit Diagram

When this current reaches.

Static switch circuit diagram.

Control system and metering system. Sts 4p 100 400 600 a static switch is fitted with a block diagram with led indicators and a 4 line 20char display. Current flow will be through load r l s 1 r 1 and gate to mt1 junction of the thyristor. Together with the power source priority selection button enables operators to make full use of the apparatus.

Parts of a static transfer switch. Capable of providing all information concerning equipment operation status. Typical static switch circuit. A transfer switch is an electrical switch that switches a load between two sources.

When a deviation from the pre set limits on the preferred source is detected a transfer signal is generated. During the positive half cycle of the sinusoidal waveform the device is forward biased but with switch s 1 open zero gate current is applied to the thyristor and it remains. Static transfer switch b. An online system can also use the static switch to transfer the load to bypass if an overload condition drawing excessive current develops.

This circuit is wired the same way as the 3 way lights at this link. Control circuit of the sts the control circuit figure 2a takes as input the voltage magnitudes of the two feeders and performs a load transfer when needed. In this diagram two 3 way switches control a wall receptacle outlet that may be used to control a lamp from two entrances to a room. 3 way switched outlet wiring.

In some ups installations the transfer is delayed for a finite time to allow a load protection fuse or circuit breaker to act and clear the fault so avoiding subjecting the load to raw mains or even. The source is at the sw1 where the hot is connected to. A static power transfer switch consists of three basic parts. A breaker or a bus assembly.

Silicon controlled rectifiers of which the internal structure is made up of. Some transfer switches are manual in that an operator effects the transfer by throwing a switch while others are automatic and trigger when they sense one of the sources has lost or gained power. Today s upss that use modular technology are flexible and easily scalable while protecting their critical load from many different threat types. The block diagram of a static switch is shown below.

Static switches play a key role in assuring this resilient performance. The circuit operation occurs when switch s 1 is closed since the triac q 1 will initially be in the block ing condition. Three wire cable runs between the switches and the outlet. The use of one static switch per module is favoured to avoid a single point of failure.