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Provides a convenient solution for monitoring multiple electrical services which share a common voltage source. It also reports diagnostic information such as power factor, volts, amps, and kVAR, over an RS-485 network using the industry standard Modbus® communication protocol.
Provides a convenient solution for monitoring multiple electrical services which share a common voltage source. It also reports diagnostic information such as power factor, volts, amps, and kVAR, over an RS-485 network using the industry standard Modbus® communication protocol.
Features
Applications
| Inputs | |
| Control Power | (90 to 132 VAC); (180 to 264 VAC for H8238E) 50/60 Hz |
| Voltage Input | |
| Maximum Voltage | 480 VAC +10% = 528 VAC |
| Frequency | 60 Hz |
| Current Input | |
| Number of Channels | 24 (8 meters x 3 phases/meter), 6 meters if neutral monitored |
| CT | Input Type: 5 Amp (customer supplied) Range: Each 3-phase circuit is independently configurable from 1 to 9999 A (using 5 A output CT's) |
| Accuracy | |
| Accuracy | ±1% when amperage is at 10% to 100% of range (exclusive of user-supplied CT's) |
| Sample Rate | 1280 Hz |
| Variable Update Rate | 200 msec for voltages, 1.6 seconds for all other |
| Outputs | |
| Type | RS-485 Modbus RTU |
| Connection | DIP-switch selectable 2-wire or 4-wire |
| Address | DIP-switch selectable base address (1 to 233 in steps of 8). Each H8238 has 8 Modbus addresses. |
| Baud Rate | DIP-switch selectable 2400, 4800, 9600, or 19200 |
| Parity | DIP-switch selectable NONE/ODD/EVEN |
| Communication Format | 8 data bits, 1 start bit, 1 stop bit |
| Termination | 5-position pluggable connector |
| Environmental | |
| Altitude of Operation | 3000 m |
| Temperature Range | Operating: 32 to 140°F (0 to 60°C) Storage: -40 to 158°F (-40 to 70°C) |
| Humidity Range | 0 to 95% non-condensing |
| Inputs | |
| Control Power | (90 to 132 VAC); (180 to 264 VAC for H8238E) 50/60 Hz |
| Voltage Input | |
| Maximum Voltage | 480 VAC +10% = 528 VAC |
| Frequency | 60 Hz |
| Current Input | |
| Number of Channels | 24 (8 meters x 3 phases/meter), 6 meters if neutral monitored |
| CT | Input Type: 5 Amp (customer supplied) Range: Each 3-phase circuit is independently configurable from 1 to 9999 A (using 5 A output CT's) |
| Accuracy | |
| Accuracy | ±1% when amperage is at 10% to 100% of range (exclusive of user-supplied CT's) |
| Sample Rate | 1280 Hz |
| Variable Update Rate | 200 msec for voltages, 1.6 seconds for all other |
| Outputs | |
| Type | RS-485 Modbus RTU |
| Connection | DIP-switch selectable 2-wire or 4-wire |
| Address | DIP-switch selectable base address (1 to 233 in steps of 8). Each H8238 has 8 Modbus addresses. |
| Baud Rate | DIP-switch selectable 2400, 4800, 9600, or 19200 |
| Parity | DIP-switch selectable NONE/ODD/EVEN |
| Communication Format | 8 data bits, 1 start bit, 1 stop bit |
| Termination | 5-position pluggable connector |
| Environmental | |
| Altitude of Operation | 3000 m |
| Temperature Range | Operating: 32 to 140°F (0 to 60°C) Storage: -40 to 158°F (-40 to 70°C) |
| Humidity Range | 0 to 95% non-condensing |
