Payment & Shipping Terms:
Transformer Protection Relay , SID - 2CM Automatic Quasi - Synchronizing Device
1 There are twelve channels to be used for 1-12 units power generator or
power lines paralleling in a device, type and attribute of paralleling can be distinguished.
2 Setting parameters: breaker time; Allowable voltage differential; over voltage protecting value;
Allowable frequency difference value; frequency control coefficient; voltage control coefficient;
Allowable power angle；Incomer and busbar TV rated voltage; shift busbar TV phase angle;
low voltage lock values on both sides of paralleling point; single side or both sides no-voltage operating；synchroscope funtion; Control pulse width for same frequence;breaker name .
3 The device can ensure the first zero phase differential appearing to be seized while differential paralleling
(between generator and busbar or two synchronous lines.) and make paralleling without impacting;
4 The device can make a fast paralleling of generators through the way it can leads frequency differential and
voltage differential into the Allowable range according to the theory of fuzzy control;
5 When paralleling will begin at once only if the power angle and the voltage difference are less than the
allowable values when paralleling between synchronous lines, otherwise , there must be a wait and signal,
whether it was differential frequency or identical frequency can be distinguished by the device automatically;
6 The device can make self-test when running timely and automatically, it can also alarm and display if error;
7 Alarming when TV open-circuit and locking the operation of synchronizing and non-voltage closing;
8 An acceleration control instruction can be given automatically when frequency is identical during the
process of paralleling of generators in order to cancel the identical frequency condition.
Paralleling of anti-power will be never appeared surely if necessary;
9 The device will display these data – real measuring time a breaker circuit takes when closing and the
last eight real measuring values recorded in every channel after accomplishing the paralleling in
order to make certain the accuracy of the time it takes when breaker closing.
The time for breakers’ closing will not be recorded when it is identical frequency paralleling.
10 Communication accesses and communication agreements will be provided between the device
and the host computer (RS-232, RS-485), in order to meet the requirements the device will be admitted into the DCS system.
11 The device can work even though under an awful conditions owing its methods of complete
and strict insulation ways on electromagnet and photo electricity;
12 AC or DC can be as power supply of the device and the device can adapt itself to 48V—220V AC
or DC power supply automatically;
13 Checking and testing can be made directly without any other apparatus because the module
demanded is already in the device;
14 One side or both sides no-voltage close breaker can be accomplished according to the instructions from the host computer；
or both sides no-voltage close breaker from operating the front panel switch..
15 To be used as a intelligent synchroscope.
1 TV secondary voltage values on both sides of the breaker for paralleling
should be 100V or 100/√3 v or that one is line voltage the other phase voltage;
TV voltage on system side can be set an turn phase angle at all parallel points respectively,
no separate transformers for insulating and turn phase angles are required.
2 All digital input are normally open type connection point, such as parallel point choice,
remote reset, auxiliary contact of breakers, and so on;
3 Normally open type contact of petty electromagnet relays can be used for controlling
signals of digital output, capacity of the contact is 220V AC 5A or 220V DC 0.5A;
4 Two communication port, one is RS-232, the other is RS-485;
5 Power supply should be 48-220VAC or DC, maximum power consumption is 20W;
weak current circuit to earth: 500V 50Hz for one minute;
power current circuit to earth: 2000V 50Hz for one minute;
between weak current circuit and power current circuit: 1000V 50/60Hz for one minute;
7 Ambience of operation:
A: temperature ranges:
(1) operation :0 to +50℃;
(2): transport/storage: -20 to +70℃;
B: maximum humidity: 90%;