| Power Line Monitor PLM - Series | |
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DESCRIPTION |
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It uses an advanced microcontroller, which samples voltage & current signals and computes True RMS voltage, current, power factor, powers and energies. It is used as a sub-meter for energy management. It is available as a stand - alone unit for manual monitoring. It can also be used with SCADA system through RS 485 port. |
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| FEATURES | ||
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Indication of instantaneous parameters. |
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| • | Voltage |
: Avg,L1N,L2N,L3N,L1L2,L2L3,L3L1 |
| • | Current | : Avg,L1,L2,L3 |
| • | Frequency | : L1,L2,L3 |
| • | Power Factor | : Avg, LI, L2, L3 |
| • | Active Power | : LI, L2, L3 (for IMPORT & EXPORT) |
| • | Reactive Power | : LI, L2, L3 (for IMPORT & EXPORT) |
| • | Apparent Power | : LI, L2, L3 (for IMPORT & EXPORT) |
| • | Actice Energy | : LI, L2, L3 (for IMPORT & EXPORT) |
| • | Reactive Energy | : LI, L2, L3 (for IMPORT & EXPORT) |
| • | Apparent Energy | : LI, L2, L3 (for IMPORT & EXPORT) |
| • | Programmable CTR / PTR | |
| • | PASSWORD facility to change settings. | |
| • | DATA retention for 10 years. | |
| • | Optically isolated RS232C with MODBUS RTU protocol. | |
| • | Optically isolated RS 4S5 output through an external module MSC 485 with MODBUS RTU protocol. | |
| • | Maximum demand for kWh, kVARh, kVAh using sliding window technique. | |
| • | 56K bytes of backup memory. | |
| • | Real time clock & alender. | |
| ELECTRICAL SPECIFICATIONS | ||||||
| TYPE | : 1 Ph / 3 Ph - 2 EL - 3W / 3 Ph - 3 EL - 4W | |||||
| MEASUREMENT | : True R.M.S | |||||
| INPUT VOLTAGE | : 63.5V / 110V / 240V / 440V AC - burden 0.5VA | |||||
| INPUT CURRENT | : 1A/5A - burden 0.5VA | |||||
| OPERATING FREQUENCY | : 45 Hz to 65 Hz | |||||
| OPERATING POWER FACTOR | : 0.1lag - unity - 0.1lead | |||||
| AUXILIARY SUPPLY | : 90VAC - 265VAC, 120VDC TO 300VDC, 5VA | |||||
| ACCURACY | • | Power | ± 1% of full scale | • | Energy | ± 1% of the reading |
| • | Power factor | ± 2° | • | Voltage & Current | ± 0.5% of full scale | |
| • | Frequency | ± 0.2% of centre frequency | ||||
| RESOLUTION | • | Power | 0.2% of full scale | • | Voltage & Current | 0.1% of full scale |
| • | Power Factor | 0.3° | • | Frequency | 0.01% of centre Frequency | |
| DISPLAY | : 16 Char x 2 rows backlit LCD display | |||||
| RESPONSE TIME | : Less than 500ms | |||||
| OVER VOLTAGE | : 1.5 times for 10 seconds | |||||
| OVER CURRENT | : 10 times for 3 seconds | |||||
| INSULATION RESISTANCE | : Greater than 20 M ohms at 500VDC | |||||
| DIELECTRIC TEST | : 2kV RMS for one minute | |||||
| OPERATING TEMPERATURE | : 0 - 55°C | |||||
| STORAGE TEMPERATURE | : -20°C - 70°C | |||||
| HUMIDITY | Upto 95% RH | |||||
| Model | Indication of instantaneous Parameters |
RS 232 | RS 485 | Maximum Demand |
Single Phase |
3Ph - 2EL - 3W |
3Ph - 3EL - 4W |
Memory Backup |
RTC |
| PLM 1 | √ | - | - | - | √ | √ | √ | - | - |
| PLM 2 | √ | √ | - | - | √ | √ | √ | - | - |
| PLM 3 | √ | - | √ | - | √ | √ | √ | - | - |
| PLM 4 | √ | - | - | √ | √ | √ | √ | - | √ |
| PLM 5 | √ | - | √ | √ | √ | √ | √ | - | √ |
| PLM 6 | √ | √ | - | √ | √ | √ | √ | √ | √ |
| PLM 7 | √ | - | √ | √ | √ | √ | √ | √ | √ |
| Datasheet | Type | Mechanical Specification | ||||
| Model | Parameter | Acc. Class | Size (mm) |
Weight
(@ gms) |
Panel
Cutout (mm) |
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| PLM | Refer above
table |
Power & Energy | 1.0 | 96 x 96 x 140 | 800 | 92 x 92+0.8 |
| Voltage & Current | 0.5 | |||||
| Frequency | 0.2 | |||||
| Power Factor | 2° | |||||
| TERMINAL CONNECTIONS | ||||
| TYPE | VOLTAGE | CURRENT | AUX. SUPPLY |  |
| Single Phase | L1, N | 1S, 1L | ~ / + , ~ / - | |
| 3Ph - 2EL - 3 W | L1, L2, L3 | 1S,
1L 3S, 3L |
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| 3Ph - 3EL - 4W | L1, L2, L3, N | 1S,
1L 2S, 2L 3S, 3L |
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| TYPICAL WIRING DIAGRAM |
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| ORDERING INFORMATION | ||||||
| 1) Model | 2) Type | 3) Input Voltage | 4) Input Current | 5) Auxiliary Supply | 6) PTR (if any) | 7) CTR (if any) |