DT-13 type synchronous relayDetailed product description：

The DT-13 synchronous relay is used in the automatic reclosing circuit of the two end power supply line, and its function is to check the existence of voltage on the line and the phase difference between the voltage vectors on the line and the substation busbar.

Overview of Structure 2
This relay is an electromagnetic instantaneous action relay, with a coil consisting of two windings installed on each of the two poles of the magnetic system. One winding of a coil is connected in series with the winding of another coil.
The relay responds to the geometric difference in voltage vectors applied to terminals 2-4 and 8-6, and adjusts the phase angle difference by rotating the pointer to change the spring's reaction force. The scale is expressed in degrees, and the relay has one dynamic contact and one dynamic contact.
The DT-13 relay is installed on a vertical panel and can be wired in front of or behind the board.
The internal wiring diagram of the relay is shown in Figure 1.



Figure 1 Internal wiring diagram of OT.13 relay (back view)

Technical data of DT-13 synchronous relay
3.1 The specifications for the rated data of relays are listed in Table 1.

relay model	Rated voltage (V)		Number of the outgoing terminal
DT-13／90	Coil 1 Coil 2	sixty thirty	2-4 8-6
DT-13／120	Coil 1 Coil 2	sixty sixty	2-4 8-6
DT-13／130	Coil 1 Coil 2	one hundred thirty	2-4 8-6
DT-13／160	Coil 1 Coil 2	one hundred sixty	2-4 8-6
DT-13／200	Coil 1 Coil 2	one hundred one hundred	2-4 8-6
DT-13／254	Coil 1 Coil 2	one hundred and twenty-seven one hundred and twenty-seven	2-4 8-6

3.2 At rated voltage, the relay operates when the phase angle difference between voltage vectors is within the range of 20 ° to 40 °.
3.3 At rated voltage, the return coefficient of the relay calculated by angle shall not be less than 0.8,
3.4 At rated voltage, the power consumed by each winding of the relay shall not exceed 3.5VA.
The conductive part can withstand AC 50Hz and voltage 2kV for 1min for dielectric strength of non charged metals.
When the voltage is below 220V and the current is below 2A, the breaking power of the contacts in a DC circuit with inductive load (time constant T is 10-3S) is 50W, and the AC circuit is 250VA.
The weight of the 3.7 relay is 1.1kg.
The appearance and opening size of the DT-13 relay are shown in Figure 2 and Figure 3.


Figure 2 Outline dimension diagram

Figure 3 Hole Size Diagram


4 Ordering Instructions
4.1 Name, model, and rated voltage of the relay.
4.2 Wiring method (front or back of board).

DT-13 type synchronous relay（No image available）