Wide temperature range and high-performance EMC design
NSA6000Smart Station Monitoring Unit
NSA6000 is AOYI's first-generation box transformer monitoring unit, widely used at plants in extremely cold and hot regions. Its high-performance EMC design supports operation from −40 °C to +70 °C; an LED display shows transformer voltages and currents in real time; and it provides complete protection (overcurrent, ground fault, overvoltage, undervoltage, differential) with 500 SOE fault records.
Wide temperature range and high-performance EMC design
High-performance EMC design ensures stable operation in harsh conditions and round-the-clock monitoring of the box transformer.
Clear data display
The LED display shows transformer voltages and currents in real time, cycling through values.
Fast fault feedback and remote operation
Low-power, fast, high-precision microprocessor
Enables remote monitoring; multiple output contacts allow prompt remote control of equipment that supports it
Fault records: 500 SOE
Flexible communication options
Meets each site's communication media requirements
Optional fiber, Ethernet or RS-485 ports
Complete protection functions
Protects power equipment and prevents outages and production losses caused by equipment damage
- Overcurrent stage I
- Overcurrent stage II
- Overcurrent stage III
- Ground-fault protection
- Overvoltage protection
- Undervoltage protection
- Differential protection
NSA6000 configuration table
Standard configuration; customizable per project
| Item | NSA6000 |
|---|---|
| AC inputs | 2 groups |
| DC analog inputs (PT100 / 4–20 mA) | 6 in total |
| DI (tele-signalling) | 40 |
| Item | NSA6000 |
|---|---|
| DO (remote control) | 10 |
| Fiber / Ethernet / RS-485 ports | Optional |
| Protection | Electrical and non-electrical protection |
| Recording | 500 records |
NSA6000 technical specifications
Based on Technical Manual V2.0. Configuration can be customized to project requirements; the contract technical agreement and drawings prevail. Download manuals and protocols ›
AC analog inputs
- Current input
- 5 A or 1 A
- Voltage input
- AC 690V / 400V / 100V
- AC frequency
- 50 Hz or 60 Hz
- Current / voltage accuracy
- Class 0.5
- Frequency accuracy
- ±0.02Hz
- Power / power factor accuracy
- ±1%
Digital inputs / outputs
- Digital inputs
- AC/DC 220 V externally powered (wet-contact) inputs, opto-isolated with surge absorption, insulation withstand ≥ AC 1500 V
- Contact rating
- AC220V 8.0A；AC380V 1.9A；DC250V 1.5A
- Contact life
- > 100,000 operations
Communication
- Uplink interface
- Fiber (ST connector, ≥ 50 km), Ethernet (10/100Base-TX) or RS-485, depending on model
- Service port
- 1 × HMI (RS-485) service port
- Protocols
- MODBUS-RTU、IEC 60870-5-103/104、IEC 61850
Protection and recording
- Non-electrical protection
- Light gas, heavy gas, transformer high / extra-high temperature, low oil level, pressure-relief valve operation, etc.
- Electrical protection
- Overcurrent stages I/II/III, ground fault, overvoltage, undervoltage
- Recording
- Last 500 fault records
Power supply
- Supply voltage
- AC/DC 220 V ±20%
- Supply frequency
- 50 Hz, −6% to +2%
- Rated power consumption
- ≤10W
Operating environment
- Operating temperature
- −40℃～+70℃
- Relative humidity
- Max. 90% monthly average RH in the wettest month, non-condensing
- Atmospheric pressure
- 80kPa～110kPa
- Site conditions
- No explosion hazard, conductive dust or corrosive substances
Mounting
- Mounting method
- Flush panel mounting, fixed by four screws on both sides of the front panel; reserve ≥ 80 mm at the rear for wiring
EMC
- Electrostatic discharge immunity
- GB/T 14598.14 (IEC 60255-22-2) Class III
- Oscillatory wave immunity
- GB/T 14598.13 (IEC 60255-22-1) Class III
- Radiated RF electromagnetic field immunity
- GB/T 14598.9 (IEC 60255-22-3) Class III
- Electrical fast transient/burst immunity
- GB/T 14598.10 (IEC 60255-22-4) Class A
- Surge immunity
- GB/T 14598.18 (IEC 60255-22-5) Class III
- Immunity to conducted disturbances induced by RF fields
- GB/T 14598.17 (IEC 60255-22-6) Class III
- Power-frequency immunity
- GB/T 14598.19 (IEC 60255-22-7) Class A
- Conducted and radiated emission limits
- GB/T 14598.16（IEC 60255-25）