Libra 1C

Single Phase Energy Meter

•Available forms: 1S, 2S and 12S

•Comply with ANSI C12.20 and GWH0034

•Accuracy: CA 0.5

•Equipped with optional local/remote-controlled disconnector (Max. 200 A)

•Replaceable battery outside meter cover

•Highly tamper-proof by design

•Prepaid/post-paid switch-over at runtime

•Modular architecture for both hardware and firmware

•Plug and play telecommunication modules independent from the measurement circuit

•Optional WAN Modules: RS485, RS232, RF, PLC, Cellular (GPRS, 4G, NB-IoT) and Ethernet

•Comply with protocols: ANSI C12.18, C12.19 and C12.22

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Main Functions

Event Logs		Tamper detection (meter cover open, current reverse, replay attack and …)
		Self-diagnosis failure (memory error, measurement system error, battery voltage low and …)
		Power quality events (under-voltage / over-voltage / bad voltage quality, power failure, sag/swell and …)
		Security events (parameters changed, firmware upgraded and …)
		Standard events (clock adjusted, maximum demand exceeded and …)
Firmware Upgrade		Firmware can be upgraded via local interface and WAN interface (OTA)
		Each firmware can be upgraded independently
		Roll-back last version image support
Tariff		Max. 4 tariffs and 4 seasons
		Support of different day types like weekend day, working day, holiday and so on
		Configurable DST
		Programmable calendars and schedules
Communication		Local optical port
		Optional WAN module
Security		Three levels of passwords for security: Master (High), Reader (Middle), Customer (Low)