Synchronous relay DT-1Prices, manufacturers, wholesale-Shanghai A Cheng Electric Co. Ltd.

1, use
DT1 type sync check relay for automatic reclosing in power supply line at both ends of the line. Its function is to check on the line and the line voltage and phase angle on the substation bus voltage vector difference.
DT1/L type sync check relay used in capacitive voltage extracting device connection, as the bilateral power line auto reclosing of voltage synchronization check components.
2, the structure and working principle
Relay the JK - 11K, h, Q type shell, its dimensions, installation open pore size and behind the terminal diagram (Appendix 3), internal terminal connection diagram is shown in Figure 1.

图1 内部端子接线图

The relay electromagnetic instantaneous relay, upon every two pole of the magnetic system is equipped with a coil consisting of two windings. The inner outer winding of a winding coil and another coil series.
Relay reaction and geometry in terminal 2 ~ 4 and 8 ~ 6 of the differential voltage vector. By rotating the pointer to change the gossamer reaction of phase difference setting. Graduated in degrees.
The relay has a break contacts and a moving contact.
3, technical requirements
The relay according to the rated data specifications are listed in table 1.
At the rated voltage (current), when the phase difference between the voltage vector in 20 DEG to 40 DEG range, relay.
In the rated voltage (current), the relay according to the angle calculation return coefficient is not less than 0.8.
In the rated voltage (current), the power consumption of each relay winding is not greater than 3VA.
The dielectric strength:
The conductive part of the insulation shell should be AC voltage 2kV, 50Hz tolerance for 1min, no insulation breakdown or flashover phenomenon.
The in DC sense (tau =5ms) loop, U < V I < 2a, 50W; in the communication loop (COS phi = 0.4), U < V I < 2a, 250VA.

Table　1

Type relay	Rated voltage (V)		Terminal number
DT-1/90	Winding1	60V	2～4
DT-1/90	Winding2	30V	8～6
DT-1/120	Winding1	60V	2～4
DT-1/120	Winding2	60V	8～6
DT-1/130	Winding1	100V	2～4
DT-1/130	Winding2	30V	8～6
DT-1/160	Winding1	100V	2～4
DT-1/160	Winding2	60V	8～6
DT-1/200	Winding1	100V	2～4
DT-1/200	Winding2	100V	8～6
DT-1/L	Winding1	0.1A	2～4
DT-1/L	Winding2	0.1A	8～6

7. The relay can be long-term tolerance for 110% of the rated voltage, when the ambient air temperature is 40 DEG C, the winding temperature rise should not more than 65 degrees.
The DT-1/L relays should be used with the FZ-3 varistor, from zero to 1500 ohms resistor (0.1A rated current). The appearance and installation dimensions are shown in figure 2.
The thermal performance
When the ambient temperature is 40 DEG C, the relay coil should be long-term tolerance 110mA, the temperature is less than 65 DEG C.
As a mechanical life of 1 * 104 times.
The weight
The relay weight is about 1kg.
Rheostat weight is about 1.2kg.
4, debugging method
The bridge shaped contact shall rotate freely, without significant friction. The rotation angle should be enough to make contact and contact, a static contact piece also began to bend.
The pointer at any location of the gossamer ring can not contact each other.
3 need to adjust the gossamer counterforce size, you can adjust the position of hairspring support sheet.
The amount of axial movement of the moving system should be in the range of 0.3mm ~ 0.2mm.
5, ordering
Please indicate the product type, name, ratings and installation.

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Synchronous relay DT-1