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Overload Relays
Bulletin 825-P Modular Protection System
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Basic Unit
- 0.5 ... 5000A Current Range
- Suitable for Low- and Medium-Voltage Applications
- Built-in Keypad and Backlit 2-Line LCD
- Test / Reset Button
- Status LEDs
- Wide Supply Voltage Range (110...240V AC/DC)
- Three Output Relays
- Two Configurable Inputs
- PTC thermistor Input
- Core Balance Current Transformer Input
- Fiber Optic Port for Remote RTD Scanner
- Three option card slots
- NEMA 12 (IP65) Housing
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Converter Modules
- Compact Three-Phase current transformer modules
- Provides electrical isolation
- Six current ranges
- 0.5 ... 2.5A
- 2.5 ... 20A
- 20 ... 180A
- 160 ... 630A
- Compatibility with MCS PLUS Bulletin 100-D contactors
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Core Balance Current Transformer
- Sensitive, low level ground fault detection
- 100:1 ratio
- 110 mm window opening
Note: The 825-P is compatible with
core balance current transformer ratios of 1:1 to 2000:1.
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RTD Scanner Module
- 12-channel inputs
- Compatible with 100. Platinum, 100. Nickel, 120. Nickel, and 10. Copper type RTDs
- Can be remote mounted near the motor, simplifying wiring
- Noise immune fiber optic connection to the Basic Unit
- Channels are individually configurable for RTD type and location (winding, bearing, ambient, or other).
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Option Cards
Voltage Input
- Input terminations for VA, VB, VC and VN
- Enables voltage and power measurement and related protection functions
- Accommodates potential transformers for levels exceeding 300V AC
DeviceNet™or Modbus™ Communications
- Direct network access for control and monitoring
- DeviceNet communications card features DeviceLogix™ component technology for enhanced control capability
- DeviceNet communication card provides compatibility with the IntelliCENTER software
Expansion I/O
- Three Configurable Inputs
- Four Auxiliary Relay Outputs
- 4 ... 20mA Isolated Analog Output
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