DATAKOM DPR-02

Description

DATAKOM DPR-02 is a specialized protection relay designed to monitor and safeguard three-phase systems against:

• Over-voltage: When voltage exceeds safe operational limits, which can cause overheating and insulation failure in equipment.
• Under-voltage: When voltage drops below the operational threshold, leading to equipment malfunction or failure.
• Phase Sequence Errors: Protection against incorrect wiring or phase reversal.
• Phase Loss: Detection and prevention of damage caused by one phase becoming inactive.

Design and Construction:

Enclosure:

• High-grade ABS/PC (polycarbonate blend) ensures durability, heat resistance, and compliance with UL94-V0 flame-retardant standards.
• Compact design for efficient DIN rail mounting, saving space in electrical panels.

Front Panel:

Adjustable trimmers for configuring:

• Over-voltage limit.
• Under-voltage limit.
• Trip delay.
• Reset delay.

LED indicators:

• ON: Shows power status.
• OUT: Indicates relay activation.
• U<: Under-voltage warning.
• U>: Over-voltage warning.

Advanced Functional Features:

Voltage Monitoring and Protection:

• Measures line-to-line voltages using True RMS (Root Mean Square) technology, ensuring accurate detection even in the presence of distorted waveforms or harmonics.

Adjustable Limits:

Allows users to configure operational voltage ranges:

• Over-voltage: From 240V to 300V.
• Under-voltage: From 150V to 210V.

Protection can be disabled for specific scenarios by adjusting trimmers to their limit positions.

Time Delays:

Prevents nuisance trips due to transient disturbances:

• Trip Delay (0.5-20 seconds): Ensures only sustained faults trigger the relay.
• Reset Delay (0.5-20 seconds): Allows time for the system to stabilize before reactivating.

Phase Sequence and Loss Detection:

• Detects incorrect phase order and disables relay output to prevent motor damage or system failure.
• Monitors for phase absence or disconnection and provides early warnings.

Fail-Safe Operation:

• Automatically disables relay outputs in fault conditions, ensuring the connected equipment remains protected.

Applications:

Power Generation:

• Protects alternators and generators from voltage irregularities and phase issues.

Industrial Motors:

• Prevents damage to three-phase motors from running in reverse or under incorrect voltage conditions.

Transformers:

• Safeguards against insulation stress and overheating caused by voltage abnormalities.

Capacitor Banks:

• Monitors voltage levels to prevent overloading or poor performance in power factor correction systems.

Distribution Panels:

• Ensures stable voltage supply and prevents faults from propagating through the system.

Technical Specifications:

Electrical Characteristics:

• Nominal Voltage: 230V AC (line-to-neutral).
• Voltage Range: 150-300V AC.
• Measurement Method: True RMS.
• Frequency Range: 47-63 Hz.
• Power Consumption: Maximum 30 VA / 2 W.

Relay Output:

Configuration:

• SPDT (Single Pole Double Throw).

Rating:

• AC: 6A at 277V.
• DC: 6A at 30V.

Switching Power:

• 1800 VA (AC).
• 300 W (DC).

Environmental Ratings:

• Operating Temperature: -30°C to +70°C.
• Storage Temperature: -40°C to +80°C.
• Humidity: Up to 95% (non-condensing).
• EMI/RFI Resistance: Complies with international standards for electromagnetic compatibility.

Physical Dimensions:

• Width: 36 mm.
• Height: 90.6 mm.
• Depth: 58.4 mm.
• Weight: Approximately 100 grams.

Compliance:

CE Certification:

• Ensures conformity with safety, health, and environmental protection standards.

EU Directives:

• Low Voltage (2006/95/EC).
• Electromagnetic Compatibility (2004/108/EC).

Installation:

Mounting:

• DIN Rail: Standard 35 mm rail mounting for quick and secure installation.

Wiring:

• Input phase voltage terminals must be connected with fast-acting (FF) 6A fuses for protection.
• Recommended cable size: 0.75 mm² to 1.5 mm² (AWG18-16).

Environment:

• Avoid installation near high-EMI devices or in high-vibration zones.
• Ensure proper ventilation around the device to maintain optimal operating temperature.

Testing:

• After installation, verify all connections and test the relay by simulating fault conditions (over-voltage, under-voltage, phase sequence reversal).