ANMA System Building

Identity

brand	CHINT
category	smart_meters
manufacturer	CHINT
manufacturer_key	chint
model	DDSU666-G 100A/40mA 2P Dual Load
model_key	ddsu666g100a40ma2pdualload
product_family	CHINT DIN-rail solar (new energy) electricity meters
product_status	active
region	GLOBAL
series	DTSU666-G / DDSU666-G solar meter series

Electrical

accuracy_class	Class 1 (IEC 62053-21) / Class B (EN 50470-3)
accuracy_current_power	±0.5% CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
accuracy_energy	±1% CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
accuracy_voltage	±0.5% CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
active_power_refresh_rate	≤ 50 ms CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
atmospheric_pressure	63.0 kPa - 106.0 kPa CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
baud_rate	1200 / 2400 / 4800 / 9600 bps (default); 19200 / 115200 bps (customizable) CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
bidirectional_metering	True
connection_method	Via CT CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
ct_secondary_current_a	0.04 CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
current_rating	100A/40mA CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
display	LCD with backlight CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
ethernet_port_count	0 CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
grid_frequency_hz	50 or 60 CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
limited_voltage_v	100V-276V CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
local_modbus_available	True CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
measured_values	Import/Export kWh, kvarh; Instantaneous kW, kvar, kVA; Irms, Vrms, Frequency, Power factor CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
measurement_directions	bi-directional measurement for kW and kWh; Import/Export kWh and kvarh CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
measurement_system	1P2W (Single phase two wire) CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
measurement_type	Current Transformer (CT)
meter_type	CT-operated single-phase two-wire DIN-rail solar/new-energy meter CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
official_product_url	https://www.chintglobal.com/global/en/products/instruments-meters/electricity-meter/ddsu666-g-100a-40ma-2p-dual-load.html CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page — inventory record source_url
operating_voltage_v	198V-253V CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
phase_count	1 CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
physical_interfaces	['RS485'] CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
rated_voltage_v	220V-240V CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
relative_humidity	≤95% (non-condensing) CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
supported_ct_ratios	primary/secondary 100A/40mA CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page

Physical / mechanical

dimensions_mm

36mm × 100mm × 65.5mm

CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page

Installation

mounting

DIN 35mm rail

CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page

Environment

operating_temperature_c	-25 to +55 CHINT DDSU666-G 100A40mA Dual Loads catalogue
storage_temperature_c	-40 to +70 CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page

Interfaces & connectors

documented_ports	[{'port_role': 'RS485', 'port_label_from_manual': 'Communication Interface', 'port_type': 'terminal', 'direction': 'bidirectional', 'electrical_domain': 'communication', 'quantity': 1, 'document': 0, 'page': 'Specifications', 'quote': 'Communication Protocol \| ModBus-RTU; Communication Interface \| RS485'}, {'port_role': 'CT', 'port_label_from_manual': 'CT connection', 'port_type': 'terminal', 'direction': 'input', 'electrical_domain': 'communication', 'quantity': 1, 'document': 0, 'page': 'Specifications', 'quote': 'Access Method \| Via CT; Current Rating \| 100A/40mA'}]
protocols	['Modbus RTU'] CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page
rs485	True
wifi	False CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page

Certifications

standards

EN 61326-1, EN 61010-1

CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page

Documents

datasheet CHINT DDSU666-G 100A40mA Dual Loads catalogue

product_page CHINT DDSU666-G 100A/40mA 2P Dual Load - Datasheet & Manual product page

Additional documented parameters

Recorded verbatim from the source; no schema field exists for these yet.

builder_completeness	complete
region_notes	CHINT Global English catalogue; 220-240 V / 50-60 Hz with EN 61326-1 and EN 61010-1 compliance. No region-specific electrical variant is published for this designation.
withheld:direct_current_max_a	"not applicable - CT-operated meter"
withheld:internet_required_for_operation	"not applicable - standalone meter"
withheld:max_connected_devices	"not applicable - end device"
withheld:rs485_port_count	1