Features:
Trinity introduces the SLM PRO, an easy-to-use, accurate and very versatile electrical power meter with innovative features, which is ideal for remote monitoring of electrical installations, Energy accounting and management, tenant billing and Power quality analysis.
The meter has three LEDs in the front, one to calibrate energies, one to indicate the status of RS485 communication and one to indicate conversion from kilo to mega. The display consists of three rows of four-digit seven segment red LEDs of 0.56 inches. Twenty-four LEDs in two columns on either side of the display indicate the various parameters being shown.
It supports MODBUS-RTU protocol over RS485 port.
Installation & Connection:
The CT Primary and Secondary, PT Ratio and installation types are site selectable, thus making it possible to use the meter in all types of installations like 3P4W, 3P3W and 1P2W.
Comprehensive Measurement:
In addition to basic metering of the previous models, SLM PRO adds support for Import-Export measurement on three energies and demands, logging of minimum-maximum values, all three types of power factors like True, Displacement and Distortion , Phase angle measurements, unbalance percentages and computed neutral current.
Power Quality Analysis as per IEC 61000-4-30 & IEC 61557-12:
For Power Quality Analysis - SLM PRO measures individual harmonics for all voltage and current waveforms, both even and odd, up to the 30th order, with THD as per IEC 61557-12. It also records in its non-volatile memory with date and time stamp, twenty Interruption events and thirty SAG/SWELL events, as per IEC 61000-4-30 standard
Technical Specifications:
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Parameters |
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Type |
Name |
Statistics |
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INPUT |
Supply |
3P4W, 3P3W, 1P2W |
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Voltage |
Direct Voltage Input: up to 500V (L-L), 300V (L-N) PT Ratio: Site Selectable Burden: 0.5VA |
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Current |
Secondary Current Input: 5A or 1A (Site Selectable) CT Primary: Site Selectable Range of Reading: up to 5000A Burden: < 1.0VA Overload: 5A CT-6A RMS continuous & 1A CT-1.2A RMS continuous |
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Power Supply |
Aux. supply – 60-480V AC/DC, 50-60Hz |
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Measurement |
Basic |
Volt (L-L), Volt (L-N) |
Accuracy: 0.5% of reading |
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Amps (RYB) |
Accuracy: 0.25% of reading |
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Frequency |
45-55Hz, accuracy: 0.05% of reading |
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Power |
Active Power (P) |
Accuracy: 0.5% of reading (for IPFI > 0.5) |
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Reactive Power (Q) |
Accuracy: 1.0% of reading |
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Apparent Power (S) |
Accuracy: 0.5% of reading |
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Power Factor |
For individual phases & system PF Accuracy: 0.5% of reading (for IPFI > 0.5) Range of Reading: 0.05 to 1.00 (Lag/Lead) |
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Energy |
Active Energy KWh |
Range of Reading: 0 to 999999999.9 Accuracy: Class 0.5s |
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Apparent Energy KVAh |
Range of Reading: 0 to 999999999.9 Accuracy: 0.5% of reading |
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Reactive Energy KVARh |
Range of Reading: 0 to 999999999.9 Accuracy: 1.0% of reading |
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Power Quality |
THD & individual harmonics for each phase V & A |
Class 5.0 up to 30th order |
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Demand |
Parameters |
KW, KVA, KVAR & Avg. Amps |
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Window |
15 mins or 30 mins selectable |
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Mode |
Fixed or Sliding selectable |
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Calculation |
Present, Predictable, Maximum Demand & Last Maximum Demand Import & Export (For power parameters only) |
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Miscellaneous:
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Type |
Name |
Statistics |
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Dimensions |
Size |
96x96x55mm |
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Panel cut-out |
92x92mm |
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Display |
4x3, 7 segment, Red |
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Operating Temperature |
0 to 550C |
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Weight |
310 grams |
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Operating Current Range |
0.4% to 120% of CT Primary |
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Communication |
RS485 Port |
MODBUS RTU Protocol: 2 wires, 9600, 19200, 38400 Baud Parity: None, Stop Bit-1, Isolation: 2.5VA RMS |
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Display Update |
Instantaneous |
1 S |
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Demand |
1 S |
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Harmonics |
3 S |
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Keypad |
3 keys for navigation & programming of various parameters |
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Calibration LED |
Red colour: 1000 impulses per unit Import/Export of KWh/KVAh/KVARh |
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Communication LED |
Dual coloured LED Data Receive – Green LED Data Transmit – Red LED |
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*0.5s accuracy applicable only in 3P4W mode. Note: some parameters are available only on RS485. So please refer to the user manual for more details. |
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