H8238 multi-circuit power monitor with 120V AC supply voltage.
H8238 multi-circuit power monitor with 120V AC supply voltage.
Discontinued!
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A convenient power monitoring system that provides a solution for monitoring multiple electrical services that 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. To protect valuable equipment, this monitor has built-in alarm registers for over-and under-voltage, current, and kVA.
The monitoring capabilities and open systems compatibility make it an ideal power monitoring solution for OEM, tenant submetering applications, and load management of power distribution units commonly used in internet data centers.
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 |
