Name: Digital Voltage Protection Relay, Single-Phase

Model: SVP-917-63A

• Important Functions: overvoltage protection, undervoltage protection, overcurrent protection, energy consumption display (kWh), adjustable range 1–63 A, automatic reset.

Technical Specifications:

• Current protection range: 1 – 63 A (default 40 A; option up to 80 A with special order)
• Adjustable overvoltage limit: 85 – 300 V (default ~270 V)
• Adjustable undervoltage limit: 85 – 300 V (default ~170 V)
• Startup delay time: 2 – 255 s (default 2 s)
• Power consumption (voltage circuit): ~1 W, weight < 1 VA
• Active energy display: 0 – 9999.9 kWh
• Current/voltage accuracy: ±0.5 %
• Active energy accuracy: ±1 % (according to IEC62053-21 standard)
• Rated frequency: 50 / 60 Hz
• Operating temperature: –25 °C … +70 °C
• Storage temperature: –40 °C … +80 °C
• Permissible relative humidity: ≤ 85 %
• Maximum operating altitude: up to 2,500 m
• Dimensions (L × W × H): approximately 100 × 36 × 67.5 mm
• Material: combined plastic and metal housing

Features and Operation:

• Overvoltage protection: The relay disconnects the power supply if the voltage exceeds the set limit.
• Undervoltage protection: The relay disconnects if the voltage falls below the set limit.
• Overcurrent protection: The circuit is automatically protected if the current exceeds the set limit between 1–63 A.
• Consumption display (kWh): Total consumption is shown on the digital display.
• Automatic reset: After disconnection, power is restored automatically when conditions return to normal.
• Dual current/voltage display: Continuous monitoring of operating parameters.
• Warning codes: Display of the latest fault codes for easy diagnosis.

Installation and Operating Instructions:

• Mounting: on a 35 mm DIN rail inside an electrical panel.
• Connections:
• Input: phase (L) and neutral (N) from the mains.
• Output: phase and neutral to the protected circuit.
• Initial settings:
• Overvoltage and undervoltage limits.
• Current limit.
• Startup delay time.
• After power-up: check the displays (voltage, current, consumption).
• Disconnection tests can be performed with controlled voltage variation or temporary overload.

Safety Recommendations and Terms:

• Check the wiring before sealing.
• Ensure that the load does not exceed the specified protection current.
• Use only a properly connected and verified receiver, without improper contact.
• If protection is activated, disconnect the load to avoid repeated connection/disconnection cycles.
• This device does not replace a short-circuit breaker; use together with one is recommended.