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A S P M E T E R S P L I T C O R E
—
ASPMETER split core
Specifications
Inputs
Input power
Accuracy
Power/energy
Voltage
Current
Operation
Sampling frequency
Update rate
Overload capability
Outputs
Type
Connection
DIP switch-selectable 2-wire or 4-wire, RS-485
Address
Baud rate
Parity
Communication format
Termination
Terminal block torque
Mechanical
Ribbon cable support
4 ft. (0.9 m) flat ribbon cable ships standard;
Operating conditions
Operating temp range
Storage temp range
Altitude of operation
Compliance
Agency approvals
Installation category
¹ See configuration section for details.
Notes:
• If ASPMETER products are used in installations with circuits higher than the product
ratings, the circuits must be kept segregated per UL 508A Sec. 17.5.
• 277/480 V AC wye-connected (center-grounded) power systems operate within the
300 V AC line to neutral safety rating of the ASPMETER series, and the operational
voltage limit (single-phase connection) as the line to neutral voltage is 277 V AC in
such power systems. Corner-grounded delta 480 V AC systems would not qualify,
because the actual line to earth voltage is 480 V AC on each leg, exceeding the
ASPMETER ratings.
• ASPMETER internal circuitry (cables and CTs) are not circuits as defined by UL 508A,
because they do not extend beyond the ASPMETER itself without further safety/fire
isolation.
90–277 V AC, 50/60 Hz
IEC 62053-21 Class 1, ANSI C12.1-2008
±0.5% of reading 90–277 V line-to-neutral
±5% of reading
1.8 seconds (both panels)
Modbus RTU
DIP switch-selectable address 1 to 247
(in pairs of 2)¹
DIP switch-selectable 9600, 19200, 38400
DIP switch-selectable NONE, ODD, EVEN
8 data bits, 1 start bit, 1 stop bit
5-position depluggable connector
(TX+ TX- SHIELD TX+/RX+ TX-/RX-)
4.4 to 5.3 in-lb (0.5 to 0.6 N-m)
up to 20 ft. (6 m) available
0 °C to 60°C (32 °F to 140 °F);
<95% RH, non-condensing
-40 °C to 70 °C (-40 °F to 158 °F)
UL 508 open-type device, EN61010-1
Cat III, pollution degree 2
Product overview
The ASPMETER panelboard monitoring system is designed
to measure the current, voltage and energy consumption
of up to 92 circuits (84 branch circuits, two 3-phase mains,
two neutrals) on a single board. One ASPMETER can monitor
up to two panels.
The ASPMETER consists of a data acquisition board and up to
84 split-core current sensors (50 A, 100 A or 200 A), with eight
2560 Hz
auxiliary inputs. Each conductor passes through a current
sensor and terminates at the breaker. Each sensor transmits
22 kAIC
the current data to the data acquisition board. Data is
transmitted using an RS-485 Modbus protocol. Each data
acquisition board requires two addresses, one for each set
of 42 current sensors and four auxiliary inputs. Data is
updated roughly every two seconds. As a circuit approaches
the user-defined threshold, the ASPMETER activates the alarm
indicators.
The ASPMETER-A measures both current and power for the
mains and branch circuits. The ASPMETER-B measures both
current and power for the mains, and current only in each
circuit. The ASPMETER-C measures current only for the mains
and branch circuits.
Product identification
ASPMETER
3000 m
Description
A = Advanced board
B = Intermediate board
C = Basic board
# of CTs
002 = 2 adapter boards, no CTs, no cables
004 = 4 adapter boards, no CTs, no cables
42 = 2 adapter boards, (42) 50 A CTs,
(2) 4 ft. round ribbon cables
84 = 4 adapter boards, (84) 50 A CTs,
(4) 4 ft. round ribbon cables
15
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