Three-phase voltage relay VP-3F10Af
- Three-phase voltage relay VP-3F10Af
Three-phase voltage relay VP-3F10Af
Three-phase voltage relay for photovoltaics VP-3F10Afisdesignedto protect single-phase or three-phase consumers from excessively high line voltage or to connect an additional consumer in a photovoltaic installation. The device prevents failures and extends the life of electrical equipment. With selectable operation as three-phase or three independent single-phase relays.
The relay monitors the upper voltage limit. If this voltage limit is exceeded, the load is switched off (or an additional load can be connected to receive power). The load is automatically switched on (off) as soon as the voltage drops to the upper voltage limit minus the voltage drop (hysteresis) after the set response time. That is, if the upper limit is set to 253 V and the hysteresis is 10 V, the load will be turned off when it exceeds 253 V, and if it drops to 243 V, the load will be turned on after the set response time (from 0 to 10 seconds). >The relayhas three changeover contacts> - one for each phase.
Lowering the voltage at the photovoltaic installation is important for safety and efficiency reasons. Too high a voltage can cause overvoltage and damage to the installation and connected equipment. Overvoltages can occur when there is a sudden increase in power or decrease in circuit resistance. Too high a voltage can also increase the risk of electrocution.It is important to adjust the voltage of the photovoltaic installation according to the requirements of the devices and networks to which it will be connected.
Programmable settings:
- Operation mode - single-phase or three-phase
- Upper cut-off limit, step 1V - 170-270V
- Voltage hysteresis (voltage drop from the upper limit), step 1V - 1-50V
- Switch-on response time, step 1 sec - 0-90 sec
All preset values are stored in non-volatile memory.
Specifications
Three-phase / three single-phase
Rated load current: 10A
Maximum load current: 16A
Operating voltage: 50-400V
Cut-off time for upper limit: 0.02 sec.
Upper cut-off limit for voltage: 170-270V (1V step)
Voltage hysteresis: 1-50V (1V step)
Connection delay time: 0-90 sec (step 1 sec)
Contact configuration: changeover contact (NO+NC)
Size: 3 modules
DIN rail mounting