<< Yokogawa
Digital Switchboard Meter
Yokogawa 2492 Power Series Plus
Digital Switchboard Meter
AC Volt/ Frequency Dual Function |
- Scaling of the instrument for PT (potential
transformer) primary ratings up to 1250:1; and CT (current
transformer) primary ratings up to 5000:1.
- Adjustable transducer output proportionate to the primary
input setting.
- Electrical legends (i.e., Watts, Kilowatts, Megawatts)
can be set by the user and indicated by a red LED adjacent to
the selected legend.
- Display average setting: Adjustable to obtain a “rolling
average” of inputs. Increasing the number of samples reduces
annoying “digit bounce” by the least significant digit.
- All settings are stored in non-volatile memory. If there
is a loss of power to the instrument, all settings will remain
as they were prior to power loss.
- Accuracy of ±0.2% of reading, ±0.1% of full scale.
- True RMS current and voltage measuring capability. A most
desirable feature when distorted wave forms are present on the
line.
- High resolution/ high intensity LED displays that can be
viewed from almost any angle.
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Yokogawa 2492 Shown |
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The POWER SERIES Plus digital switchboard meter was developed by
Yokogawa Corporation of America to provide our customers with a
versatile AC digital power meter. The heart of our POWER SERIES Plus
meter is a programmable ASIC Power Measurement Chip (PMC) which was
jointly developed by the General Electric Company and Yokogawa Electric
Corporation. This unique PMC capability will continue to expand into
many new power measurement and control products offered by Yokogawa
Corporation of America.
The design of the POWER SERIES Plus combines a high accuracy digital
switchboard meter with transducer output which can be configured in the
field by an end-user, or when installed in new electrical equipment by
an OEM. It eliminates requirements for a large inventory of dedicated
instruments, and provides flexibility when new panel designs or system
upgrades require changes in instrument transformer ratings. Our rugged
metal case fits standard panel cutouts for switchboard meters and makes
it a perfect replacement for less versatile instruments. The RS-485
communications option allows up to 32meters to be networked together for
remote monitoring and control. In addition, the POWER SERIES Plus can be
set up and locked out for security via the remote communications option. |
Up to Three Screen
Ideally designed for easy retrofit into existing switchboard meter
panel cutouts.
The 2491 has only one, easy to screen LED screen, while the 2492
features two different LED screens, to aid the user in comparing two
different frequencies.
Highly Customizable
The POWER SERIES Plus can be configured for primary and secondary
transformer inputs, legends, outputs and averaging function. At
Yokogawa, we program each model according to the specified options
required by the user. This minimizes the number of steps to set up the
instrument at the job site or on the factory floor.
Each model is programmed only for the options selected, so there are no
unnecessary menu items. If you select a Voltmeter without analog output,
then set up will be limited to PT ratios, LED display, and average
setting. All can be accomplished in less than one minute. If no
transformer is required, the ratio entered for PT P and PT S is 1 (1:1).
Sturdy Construction
The POWER SERIES Plus is enclosed in a rugged steel case treated
with zinc chromate to resist corrosion. The cover assembly and faceplate
are constructed of high temperature polycarbonate material and have
several gaskets which seal out dust and moisture from the front cover.
The 26 position terminal board is a glass-filled polycarbonate material
with #8 nickel-plated brass terminals inserted.
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Power Series Plus - General Specifications |
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Volt/Amp Dual Function Measuring Capabilities |
Available Connection |
Single Phase |
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Maximum Input Rating |
0-1 Amp AC
0-5 Amp AC |
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Electrical Legend |
Amps AC
Kiloamps AC |
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Display |
Type |
4 digit red LED (9999 counts) |
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Response Time |
200ms min. update time |
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Input Rating |
Current |
0 to 1A AC; 0 to 5A AC |
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Voltage |
0-120V AC, 0-240V AC (W/VAR/PF/PA)
0-150V AC, 0-300V AC (Volt/Freq) |
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Frequency |
50/60 Hz and 400 Hz |
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Input Range |
Rated Current |
A/W/VAR: 0-200%; PF/PA : 20-200% |
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Rated Voltage |
V/W/VAR: 0-120%; PF/PA: 50-120%; Frequency: 20-120% |
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Input Frequency Range |
Volts, Amps, Hertz |
45-65Hz up to the 9th harmonic measuring capability |
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±2% of Specified Accuracy |
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Sustained Input |
Rated Current |
A/W/VAR/PF/PA: 200% continuous; 10x rating for 5
seconds |
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Rated Voltage |
V/W/VAR/FREQ : 120% continuous; PF/PA : 150%
continuous |
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Accuracy |
Reference condition: 25°C, 45-74%RH, at rated input
60Hz sine wave, 30 min. warm-up |
Voltage |
±0.2% of reading ±0.1% of full scale |
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Current |
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Frequency |
±0.01 Hz @ 40-70Hz, ±0.1Hz @ 300-500 Hz |
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Analog Output and Response Time |
0 to 1mA, 0 to ±1mA |
10VDC compliance into 10k ohm load maximum |
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4 to 20mA, 12 ±8mA |
15VDC compliance into 750 ohm maximum
1 second maximum response time within ±1% of final value |
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Temperature Coefficient |
Display and Comm: |
±150 PPM/°C maximum of full scale |
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Analog Output |
±250 PPM/°C maximum of full scale |
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Influence of |
Input Voltage |
<0.05 Power Factor (10-120% of rated voltage) |
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Input Frequency |
<0.05 Power Factor (45-65Hz) |
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Load Resistance (Analog Input) |
0 to 1mA, 0 to ±1mA : 0 - 10K ohm within ±0.05% of
full scale
4 to 20mA, 12 ±8mA : 0-750 ohm within ±0.05% of full scale |
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Dimension |
W x D x H = 4.33 x 6.54 x 4.33 inches |
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How to Order |
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Model |
2492
Dual Function Digital Switchboard
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# |
-# |
-# |
-# |
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Voltage and Frequency |
150 Volt and 50/60 Hz |
22 |
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300 Volt and 50/60 Hz |
23 |
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150 Volt and 400 Hz |
26 |
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300 Volt and 400 Hz |
27 |
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Analog Output |
No Output |
AAA |
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0 to 1 mAHz |
AFA |
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4 to 20 mA |
AHD |
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Communication |
None |
0 |
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RS-485 |
1 |
Aux. Power Supply
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120 V 50/60 Hz |
1 |
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240 V 50/60 Hz |
2 |
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Notes |
1) Maximum scaling ratio for volts is 1250:1.
2) NIST Calibration Certificate: Specify and add $50.00 each per
unit.
3) NIST Calibration Certificate with Test Data: Specify and add
$100.00 each per unit.
4) Certificate of Conformance: No charge, but specify with order. |
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Example Product |
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Base Model |
AC Input Rating |
Analog Output |
Communication |
Aux. Power Supply |
Dual Phase Digital Switchboard
150 Volt and 50/60 Hz
0 to 1 mA
RS-485
240 V 50/60 Hz |
2492 |
22 |
AFA |
1 |
2 |
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2492-22-AFA-1-2 |
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Ordering Information |
| Model |
Description |
Price |
| 2942 |
Yokogawa 2940 Power Series Plus Digital
Switchboards, Dual Function |
Please Call |
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