VOLTAGE DISPLAYED ON EACH PHASE IS 380 V

The SINOTIMER STVP-936V panel switch is an electronic protection relay for three phases 3P+N, designed for continuous voltage monitoring on the three phases and automatic disconnection of the power supply when the voltage exceeds the set limits.

The device features three digital LED displays, one for each phase L1, L2, and L3, allowing quick and simultaneous verification of the network voltages.

The overvoltage and undervoltage limits are adjustable, and after the voltage returns to normal limits, the STVP-936V can automatically reconnect the consumers after the specified recovery time. The reconnection time can be set between 1 and 600 seconds.

The presented version is 80A, a value also indicated on the product casing. The device interrupts N + L1 + L2 + L3, according to the diagram printed on the front panel.

It is suitable for the protection of three-phase electrical installations in residences, commercial spaces, laboratories, and other facilities powered by 230/400V. The PV marking indicates that this version is also suitable for use in installations with photovoltaic systems.

Installation is done on a 35 mm DIN rail in the electrical panel.

• Manufacturer: SINOTIMER
• Model: STVP-936V
• Type: Three-phase electronic voltage relay/protection
• Network: 3P+N
• Nominal voltage: AC 230/400V
• Frequency: 50/60Hz
• Nominal current – presented version: 80A
• Current range: 5–80A (optional, according to manufacturer's indication)
• Adjustable overvoltage limit (Uvo): AC 381–499V
• Adjustable undervoltage limit (Uve): AC 260–375V
• Recovery/reconnection time: 1–600 seconds
• Conductor switches: N + L1 + L2 + L3
• Display: 3 × digital LED display
• Monitoring: Voltage of the three phases
• Signaling: LED for overvoltage/undervoltage on each phase
• Settings: SET + ▲ + ▼
• Manual control: ON/OFF button
• Input: Upper: N, L1, L2, L3
• Output: Lower: N, L1, L2, L3
• Installation: 35 mm DIN rail
• Width: 71.5 mm
• Height: 95.2 mm
• Maximum depth: 65.7 mm
• Visible markings: CE, UKCA
• Version: PV

Operation: The STVP-936V simultaneously monitors the voltages of the three-phase network. If the voltage on any phase exceeds the set upper limit or falls below the lower limit, the relay orders the disconnection of the power supply to protect the connected equipment. After the voltage returns to normal, the device waits for the programmed recovery time, between 1 and 600 seconds, and then automatically reconnects the circuit. The three displays allow simultaneous observation of values for L1, L2, and L3, while the side LED indicators signal exceeding the upper limit >V or dropping below the lower limit.