Secure Meter Liberty 150

Rated 3.14 out of 5 based on 7 customer ratings
(35 customer reviews)
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Saral is a compact, interoperable, intelligent credit single-phase meter, designed for domestic and small commercial applications. It is available in three current range variants, all with high accuracy.  Saral provides utilities with powerful revenue protection features, as well as data storage and communications capabilities.

Utility tariff metering

Saral supports

  • Active and apparent forwarded energy registers
  • Maximum demand (kW/kVA)
  • time-of-use (TOU) registers
  • Midnight and load survey data recording
  • Reading in the absence of mains supply

Saral is a highly configurable product and suitable for all possible tariff requirements of utilities.

Net metering

Net metering is major growth sector that requires a bi-directional meter to record consumed and generated energy. Utilities need to bill such consumers according to the difference between their consumption and what they have exported to the network.

Following registers are supported by Saral for net metering applications

  • Active import
  • Active export
Connection type Direct connected
Wiring configuration 1-phase 2-wire
Voltage range 230/240 V (L-N)
Current range 5-30 A, 10-60 A, 10-100 A
Accuracy Class 1.0
Mains frequency 50 Hz ± 5%
Compliance IS 13779, IEC 62052-11, IEC 62053-21, DLMS Indian Companion Standard


Dimensions (W x H x D) 129 mm x 94 mm x 61 mm
Weight 0.32 kg (approx.)
Enclosure Engineering plastic


Degree of protection IP 54
Insulation class Protective class II
Temperature -20 °C to +60 °C (operating)

-25 °C to +70 °C (storage)

Humidity 95% non-condensing


Tariff rate registers Up to eight rate registers, for two energy channels
Maximum demand Two types, configurable in eight registers
Load survey Up to 150 days load profile for five parameters (configurable), with 30-minute integration period
Communications Optical port for local communications, optional RS-232 port (micro USB) for remote communications
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