Energy Measurement
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Active, Reactive inductive, Reactive capacitive, Apparent
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Import, Export, Absolute and Net
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Total and TOU
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Programmable decimal places
Demand Measurement
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Active, Reactive inductive, Reactive capacitive, Apparent
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Import, Export
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Maximum Demand & Cum. MD
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Block or Sliding window
Power Quality
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Instantaneous, Average, Maximum
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Voltage & Current (Under, Over, Sag, Well)
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V & I Harmonics (Up to 15th)
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V & I (Phase, line, neutral, vector sum)
Tariff and Time of Use
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8 rates, 10 time divisions, 8 day/week/seasons
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420 Special days
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Active and Passive calendars
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Immediate and scheduled activation
Supply / Load Control
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Remote, local and manual
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Scheduled or on-demand
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Over current, over temperature
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Internal and external
Data Recording
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Hourly/Daily load curve, Billing/AVC profiles
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Event logs, GPS information
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Anti-theft protection and notification
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Last gasp / First breath information
Input / Output
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Relay output (250V / 16A)
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SO, EOI outputs
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2×RJ-45 interface (Gateway / IHD)
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Auto/Manual scrolling LCD with backlight
Communication Interfaces
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Optical port (IEC 62056-21)
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Modular plug-and-play PLC / RF / Cellular
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RS-485 (Configurable DLMS or MODBUS)
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DLMS/COSEM communication profiles
Technical Specification
| Sr. No | Description | Unit | Technical Parameters | |
|---|---|---|---|---|
| DC (whole current) | CT connected (Transformer operated) | |||
| 1 | General Information | |||
| Model Number | NW34-R8.4/NW34160A-R8.4 | NC34-R9.5 | ||
| 1 | General Information | |||
| Model Number | NW34-R8.4/NW34160A-R8.4 | NC34-R9.5 | ||
| Service Type | 3-Phase, 4-Wire | |||
| 2 | Ratings | |||
| Nominal Voltage (Un) | V | 3×133/230/400 (Max endurable 500V per phase) | ||
| Operating range | V | 0.8 Un ~ 1.15 Un | ||
| Nominal Frequency (fn) | Hz | 60 | ||
| Nominal Current (In) | A | 10/20 | 1.5 | |
| Maximum Current (Imax) | A | 100/160 | 6 | |
| Minimum Current (Imin) | A | 0.5 | 0.015 | |
| Transitional Current (Itr) | A | 1 | 0.15 | |
| Starting Current (Ist) | A | Active (Cos Φ): 0.004Ib; Reactive (Sin Φ): 0.005Ib | Active (Cos Φ): 0.001Ib; Reactive (Sin Φ): 0.003Ib | |
| 3 | Accuracy | |||
| Active Energy | 1.0 | 0.5S | ||
| Reactive Energy | 2.0 | 2.0 | ||
| 4 | Power Consumption | |||
| Voltage circuit | 1.65W/3.5VA | 1.65W/3.5VA | ||
| Voltage circuit (With communication module – Idle) | 2.06W/4VA | 2.06W/4VA | ||
| Voltage circuit (With communication module – communication in progress) | 2.15W/4.5VA | 2.15W/4.5VA | ||
| Current circuit | ≤ 0.4VA | ≤ 0.4VA | ||
| 5 | Meter Constant | |||
| Active Constant | imp/kWh | 1000 | 10000 | |
| Reactive Constant | imp/kvarh | 1000 | 10000 | |
| 6 | Pulse Indicator | LED w/ wavelength 610-700nm | ||
| 7 | Protection | |||
| Protective Class for insulation | II | |||
| Rated Impulse Voltage (Uimp) | kV | 8 | ||
| Protection Degree | IP54 | |||
| 8 | Temperature | |||
| Limit Range for operation | °C | -10 ~ + 75 | ||
| Limit range for storage and transport | °C | -10 ~ + 85 | ||
| 9 | Relative Humidity | RH | ≤ %95 (no-condensing) | |
| 10 | Display | |||
| Display method | Segment Type | |||
| Connection | Pin | |||
| Dimension WxH | mm | 75 x 22 | ||
| Character Height | mm | 8.32 | ||
| No. of digits | 8 | |||
| 11 | Life time | |||
| Number of Batteries | Nos | 2 (One internal + One replaceable) | ||
| Storage life of Battery | Years | ≥ 15 | ||
| Operating life of Battery | Years | ≥ 1 (RTC keeps active when mains power off) | ||
| Meter life time | Years | ≥ 15 | ||
| 12 | Terminal type and hole size | mm | Screw type 9 mm (For cable accommodation) | Screw type 5.3 mm (for cable accommodation) |
| 13 | Outline Dimensions | mm | 231 (H) x 173.5 (W) x 93 (D) | |
| 14 | Weight | Kg | 2.0 | <1.5 |
| 15 | Sealing arrangement | Pcs | Ultrasonically welded and 4 one-way screws on casing, Modem/Battery Cover (1) Terminal Cover (2) (by utility) | |
| 16 | Casing and Terminals material and characteristics | |||
| Meter Base | PC + %10 GF | |||
| Meter Cover | PC + %10 GF | |||
| Terminal Block | PBT + %30 GF | |||
| Terminal Cover | PC + %10 GF | |||
| Terminals | H59 Copper, Tin Plated | |||
| Terminal Screws | Grade A stainless, Tin plated (>5microns) | |||
| Terminal Screw head Type | Hexagon socket head (M8) | Phoenix head (Star) | ||
| 17 | Control Switch Method | |||
| Method | Supply Control Switch (SCS) | Load Control Switch (LCS) 160A & CT | ||
| Qty | Nos | 03 (Each per Phase) | 01 | |
| Utilization Category | UC3 | NA | ||
| Rated Operational Voltage | V | 230 | 250V | |
| Rated Frequency | Hz | 60 | ||
| Operational Current | A | 120 | 1 | |
| Electrical Endurance | Nos | 5500 ON/ 5500 OFF | ||
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