1. Product overview

The CG6900 series employs a full-color TFT-LCD screen as the human-machine interface (HMI), significantly enhancing interactive capabilities. It enables digital, visual, and intelligent management of switchgear operational status, serving as a critical terminal device for smart power distribution networks.

2. Functions & features

·Panoramic status display and precise monitoring

Panoramic status display: circuit mimic diagram, switch status indication, circuit breaker position indication, grounding switch position indication, spring charge state indication, HV live-line indication and interlock, and intelligent temperature control etc.

Adjustable functions: The above functions can be freely combined according to user needs to meet different usage requirements.

Precision monitoring: The digital temperature and humidity control makes the temperature more accurate and more universal, and the advanced disconnection alarm circuit is used to avoid false alarms or missed alarms.

·Human-Machine interface

Full-color LCD display enables cost-effective mimic diagram updates with high-density information visualization and intuitive user operation.

· Remote monitoring   

RS485 interface: Adjustable baud rate (4800/9600), MODBUS protocol   

3. Technical specifications

Display: Primary mimic diagram, switch status, T/H values, HV interlock, and heating/ventilation/fault alarms

● Status signal input: dry contact inputs (closed-circuit active)

● HV live indication: striking voltage indication/lockout threshold voltage: compliance with GB 25081-2010

● Range and precision of temperature measurement: -20～80℃   ±1% FS

● Range and precision of humidity measurement: 20%～98%RH ±5%RH

● Heater activation conditions (if any one of them is met, heating will be started)

1. Cabinet temperature < heater setpoint

2. Cabinet humidity > heater setpoint

3. Manual override

● Heater deactivation conditions (heating stops only when all three conditions below are simultaneously met)

   1. Cabinet temperature > heater setpoint +5°C

2. Cabinet humidity < heater setpoint -10% RH

3. Manual override reset

● High-temperature ventilation activation conditions:

1. Cabinet temperature > fan setpoint

2. Manual override

● High-temperature ventilation deactivation conditions:

1. Cabinet temperature < fan setpoint -5°C

2. Manual override reset

● Heater relay (with wire-break alarm) contact power: 2 x 220VAC/3A

● Over-temperature ventilation output relay:   220V AC/3A (Single NO dry contact).

● High-voltage live indicator interlock output relay: 220V AC/3A (Single NO dry contact).

● Alarm output relay: 220V AC/3A (Single NO dry contact; contact closes upon any of the following conditions).

1. Heater disconnection alarm

2. Sensor failure alarm

3. Over temperature alarm

● RS485 interface: Adjustable baud rate (4800/9600), MODBUS protocol

● Instrument power supply and power consumption: AC/DC 90~260V, power consumption <15W                                       

● Anti-interference characteristics (electromagnetic compatibility and electrical strength)

EFT (Fast Transient):                    GB/T17626.4-2008 Level Ⅲ

ESD (Electrostatic Discharge):            GB/T17626.2-2006 Level Ⅲ

Voltage dips, short interruptions, and voltage variations: GB/TD626.11-2008 Level Ⅲ

Surge Immunity: GB/T17626.5-2008 Level Ⅲ

   ● Panel Cutout: 207mm*127mm（CG6900A model）     

Working environment: temperature: -20～50℃, humidity: <90%RH

4. Applications

Substations: Real-time monitoring of switchgear status to prevent trip accidents caused by misoperation.

Distribution Rooms: Ensures safe operation of low-voltage (LV) distribution equipment and reduces failure risks.

Industrial Power: Monitors electrical equipment in factories, mines, and similar facilities to enhance production efficiency.

Renewable Energy: Delivers switchgear status monitoring solutions for photovoltaic (PV), wind power, and other renewable energy generation systems.