| After-sales Service: | Yes |
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| Warranty: | 1 Year |
| Type: | Strength Testing Machine |
| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier Introduction
HZJD-470A digital grounding resistance tester is designed and manufactured according to the new lightning protection grounding resistance detection standard. The short-circuit test current can reach 20mA. The precision 3-wire method or simple 2-wire method can be used to measure the grounding resistance, and has strong consistency in repeated tests. It is widely used in grounding resistance and grounding voltage measurement of electric power, telecommunications, meteorology, oil field, construction, lightning protection and industrial electrical equipment, etc.
Technical Specifications
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Function |
Ground resistance, ground voltage, low value resistance measurement |
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Power supply |
DC 14.8V 2600mAh rechargeable lithium battery , the battery is fully Charged at about 16.8V |
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Backlight |
Controllable white screen backlight, suitable for use in dark places |
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Measurement method |
Precise three-wire method and simple two-wire method to measure grounding resistance |
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Measurement methods |
Earth resistance measurement: Rated current changing pole method |
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Voltage to ground: average value rectification (between PE interfaces) |
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Range |
Ground resistance: 0.000Ω~200KΩ |
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Ground voltage: AC 0.000V~600V (50Hz/60Hz) |
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Resolution |
0.001Ω ; 0.005V |
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Precision |
Ground resistance: ±2%rdg±5dgt Note: 1. Auxiliary connection Rc: 500Ω~1000Ω error≤±5dgt 2. Auxiliary connection Rp: 500Ω~10KΩ error≤±3dgt 3. When the interference voltage is 5V, the additional error is ≤±5%rdg± 5dgt |
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Ground voltage: ±2%rdg±3dgt (50Hz/60Hz) |
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Test voltage waveform |
Sine wave |
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Test frequency |
700Hz |
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Test current |
0.000Ω~100.0Ω range: about 20mA constant current 100Ω~200.0KΩ range: about 0.1mA constant current |
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Product Size |
Meter size: length, width and height 258mm×21 5 mm×83mm |
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Package size: 27 0mm *16 0mm *25 0mm |
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Test line |
3 pieces: red 15m, yellow 10m, green 5m each |
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Simple test line |
2 pieces: 1 piece of red 1.6m and 1 piece of green 1.6m |
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Auxiliary ground rod |
2 pieces: φ 10mm× 20 0mm |
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Measure time |
Ground voltage: about 2 times/second; ground resistance: about 5 seconds/time |
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Measurement times |
More than 5000 times (short circuit test, test once, stop for 30 seconds and test again) |
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Line voltage |
Measured below AC 600V |
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Communication Interface |
With USB interface |
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Battery voltage |
When the battery power is lower than 25%, the low battery voltage symbol is always displayed, reminding that it needs to be charged in time; when the battery power is lower than 10%, the LCD screen continues to flash, and the instrument will automatically shut down after about 5 seconds |
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Automatic shut-down |
When there is no operation, it will automatically shut down after about 15 minutes |
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Power consumption |
Backlight: 25mA Max (power consumption of backlight alone) |
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Standby: 35mA Max (backlight off after power on) |
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Measurement: 150mA Max (backlight off) |
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Overvoltage protection |
AC 75V between CE ports AC 600V between PE ports AC 600V between PC ports |
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Insulation resistance |
>500MΩ between test line and case |
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Withstand voltage |
AC10.0kV 50Hz between the test line and the case for 1min |
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Electromagnetic properties |
IEC61326(EMC) |
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Suitable for safety regulations |
IEC61010-1 (CAT 300V, CAT IV 150V, pollution degree 2); IEC61010-031; IEC61557-1 (grounding resistance); JJG 366-2004 (grounding resistance meter). |
Suppliers with verified business licenses
Audited Supplier 
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