Description
The MULTISPAN VPR-33-02A Voltage Protection Relay – Digital DIN Rail Mount is an advanced digital relay designed to safeguard three-phase electrical systems from voltage and frequency abnormalities. With support for dual relay outputs, precise monitoring, LED displays, and programmable trip settings, it ensures reliable protection against faults such as over/under-voltage, phase asymmetry, phase loss, phase sequence errors, and neutral loss. Compact and easy to install on DIN rails, it is ideal for industrial and commercial electrical panels, ensuring stable operation and protection of critical equipment.
Specifications
- Display: Dual 3 + 3 digit, 7-segment LED (Red + Green or Red + White) for clear visibility
- Relay Outputs: 2-Relay option for added flexibility
- Protection Functions: Over & under-voltage, over & under-frequency, phase asymmetry, phase loss, phase sequence, neutral loss
- Tripping Functions: Individual enable/disable for each parameter
- Modes: Fail-safe and non-fail-safe selectable
- Size: (H)90mm × (W)35mm × (D)61.5mm
| INPUT SPECIFICATION | |
| Direct Voltage AC | 160 to 300V AC (L - N) 3Ø-4W |
| 280 to 520V AC (L - L) 3Ø-3W | |
| Frequency | 45.0 Hz to 65.0 Hz |
| Resolution | 1 Volt |
| Accuracy | Class 1.0 |
| DISPLAY AND KEY: | |
| Display | UPPER: 3-Digit, 7-Seg, 0.4" |
| LOWER: 3-Digit, 7-Seg, 0.28" | |
| Keys | SET, INC, DEC/RST |
| GENERAL SPECIFICATION: | |
| Dimension (mm) | 90 (H) x 35 (W) x 61.5 (D) |
| Trip Setting | Under Voltage: 260-520V AC 3Ø-3W 160-300V AC 3Ø-4W |
| Over Voltage: 260-520V AC 3Ø-3W 160-300V AC 3Ø4W | |
| Under Frequency: 45.0 Hz To 65.0 Hz | |
| Over Frequency: 45.0 Hz To 65.0 Hz | |
| Phase Asymmetry: (10-100V) | |
| Hysteresis: (0-99V) | |
| Time Parameter | Power ON Delay Time: 0.0 To 99.9 Sec. |
| Trip Delay Time: 0.0 To 999 Sec. | |
| Recovery Time: 0.0 To 99.9 Sec. | |
| Accuracy | Class 1.0 (Standard) |
| OUTPUT SPECIFICATION | |
| Relay | 2 nos. |
| Relay Type | 1-C/O (NO-C-NC) |
| Rating | 5A, 230V AC Resistive Load |
| 24V DC | |
| ENVIRONMENT CONDITION | |
| Operating Temp. | 0°C to 55°C |
| Relative Humidity | Up to 95% RH |
| (non-condensing) | |
| NETWORK CONNECTION | |
| 3Ø-3W/3Ø-4W | |
Application
- DG Set Panels
- Motor Control Center Panels
- Control Panels
- Distribution Panels
Comparison with VPR-33-00
While both the VPR-33-00 and VPR-33-02A are designed to provide reliable protection against voltage disturbances in three-phase systems, the VPR-33-02A offers enhanced functionality:
- VPR-33-00 → Reliable basic voltage protection (single relay).
- VPR-33-02A → Advanced version with dual relays + frequency monitoring for more demanding industrial and generator-based applications.