Compliant with DL/T971-2005, KDHX-3209 adopts wireless transmission technology, supports remote phase check upgrade and multi-scenario testing. It calculates phase difference via multiple transmitters/collectors to judge phase consistency, featuring high safety and versatility.

1. Support remote phase check function upgrade with strong combined functions and multi-purpose use with one machine.
2. Adapt to phase check of mid-mounted switchgear, high-voltage lines and ring main unit induction points for multi-scenario application.
3. Real human voice prompt for measurement results and operation steps for intuitive and easy operation.
4. 320*240 color screen displays phase difference, frequency, vector diagram and phase result simultaneously.
5. Built-in rechargeable and replaceable lithium batteries for transmitters and receiver for convenient on-site use.
6. Ultra-low leakage current and power consumption ensure high safety and long working time in high-voltage measurement.
7. Automatic shutdown after 1 hour of inactivity for energy saving and battery protection.
8. Wireless transmission without connecting wires, free from terrain and structure limits with stable signal.

Mid-mounted Switchgear Specifications

1. Line-of-sight transmission distance (host & collector): ≥5m
2. Test AC voltage level: 6KV~35KV

Ring Main Unit Specifications

1. Line-of-sight transmission distance (host & collector): ≥100m
2. Test AC voltage level: 1V~500V

High-Voltage Phase Check Specifications

1. Line-of-sight transmission distance (host & collector): ≥100m
2. Test AC voltage level: 15V~220KV

Core Performance Indicators

1. Phase difference accuracy: ≤6°
2. Frequency accuracy: ±0.1Hz
3. Total voltage measurement range: 1V～220KV
4. Max line-of-sight transmission distance: about 100m
5. Leakage current in high-voltage measurement: <10μA
6. Transmitter working power consumption: <0.1W
7. Receiver working power consumption: <0.3W

Power Supply Parameters

1. Receiver lithium battery capacity: approx. 2500mAh
2. Transmitter lithium battery capacity: approx. 350mAh
3. Charging configuration: 5V/1A charger

Environmental Parameters

1. Operating environment: -35℃～+45℃, humidity ≤95%RH
2. Storage environment: -40℃～+55℃, humidity ≤95%RH
3. Service condition temperature: -20℃～+50℃, max daily temperature difference: 30K
4. Altitude: ≤2000m
5. Solar radiation intensity: 0.1w/cm²
6. Seismic capacity: horizontal acceleration 0.2g, vertical acceleration 0.13g
7. Humidity (service condition): daily/monthly average relative humidity ≤90%

Physical Parameters

1. Automatic shutdown: 1 hour of inactivity
2. Total weight: approx. 6KG
3. Packaging dimensions: 89cm(L)×26cm(W)×11cm(H)
4. Display: 320*240 color screen