1, use
BXX 2 phase phase protection relays are used in fault detection or sequence. When the phase sequence is correct, the relay action, to obtain the output; when the phase sequence is correct or exchange any loop phase disconnection and latching relays.
2, structure and working principle
By JK 11K, H relay, Q type shell, its size, behind the terminal and mounting hole is shown in Appendix 3. See Figure 1 behind.
Relay is composed of a small sealed relay, bridge rectifier, integrated block, a crystal triode, voltage regulator tubes, resistors and capacitors components.
3, technical requirements
1 ratings
Relay rated line voltage 380V, rated frequency 50Hz.
2 voltage fluctuations
Relay voltage allows fluctuations in 80%~110% ratings.
3 phase sequence estimation
When the phase sequence is correct, relay, when the phase sequence is correct, latching relays, when any of the three phase phase fault phase latching relays, luminous diode lights.
4 power consumption
The total power consumption of three phase is no more than 4VA.
5 insulation resistance should be no less than 300M.
6 medium strength
In standard test atmospheric conditions, the relay, the conductive circuit and exposed non charged metal part and a casing, and AC circuit and contact loop between, should be able to bear AC 2KV RMS voltage test, which lasted 1 min, no insulation breakdown or flashover phenomenon.
7 contact performance
Sense (tau =5ms) loop u is less than or equal to 250V DC, I is less than or equal to 0.2A, 30W; in the communication loop (COS phi = 0.4), u is less than or equal to 250V, I is equal to or less than 0.5A, 100VA.
8 contact allows the closure of the current for the long 1A.
The electrical life of 9 relay is 5 * 103, mechanical life for 104 times.
10 relay weight of about 0.7kg.
4, ordering information
Please specify the type of the products, the name, the rated line voltage and installation method.
