UNI-T UT677A+ 0–70V Battery Internal Resistance Tester

UNI-T UT677A+ 0–70V Battery Internal Resistance Tester

UNI-T UT677A+ is the model of the UNI-T UT677 series that measures battery voltage up to 70 V; it assesses the condition of rechargeable batteries such as lead-acid and lithium types by measuring their internal resistance and voltage. Internal resistance is measured in 4 ranges from 0.000 mΩ to 3 Ω with the 1 kHz AC four-terminal method, with a best resolution of 1 µΩ. The voltage ranges are 0.000–±7 V (1 mV) and 7–±71.00 V (10 mV), with an accuracy of ±0.2% fs ±10 dgt. The response time is 200 ms and the test time is 2 s; PASS/WARNING/FAIL thresholds can be preset, 500 sets of data are stored, and PC software and a Bluetooth app are supported. It has a 3.5″ colour screen and a 2600 mAh lithium battery, and weighs 674 g including the battery. The UT677 series is used in battery production, installation and maintenance; the UT677A+ measures battery voltage up to 70 V.

Battery Voltage Range0.000–±7 V · ±0.2% fs ±10 dgt (1 mV); 7–±71.00 V · ±0.2% fs ±10 dgt (10 mV)
Gram674.0 g (pil dahil)
BluetoothVar (PC yazılımı and Bluetooth app desteklenir)
Storage Environment-20–60 °C; <70% relative humidity
Display3.5″ renkli ekran (480×320)
Comparative MeasurementPASS, WARNING, FAIL eşikleri önceden adjustable
Auto Power OffVar (approx. 15 min)
Response Time200 ms (test süresi 2 s)
Operating Environment-10–40 °C; <80% relative humidity
Product Dimensions170 mm × 115 mm × 65 mm
Battery Internal Resistance Measurement0.000–3 mΩ · ±1% fs ±20 dgt (1 µΩ); 3.000–30 mΩ · ±0.5% fs ±15 dgt (10 µΩ); 30–300 mΩ · ±0.5% fs ±15 dgt (100 µΩ); 300 mΩ–3 Ω · ±0.5% fs ±15 dgt (1 mΩ)
Measuring Methodİç direnç: 1 kHz AC dört uçlu (4-terminal) yöntem; açık devre uç gerilimi en çok 3 V
Measuring Current2.0 mA–200 mA (kademeye göre değişir)
Refresh Rate5 ölçüm/s
Noise ImmunityVar (otomatik frekans ayarı 920–1080 Hz)
Measuring ModeManuel and otomatik ölçüm
Data HoldOtomatik/manuel
Memory500 set
InterfacesType-C; test verisi kaydedilir and PC'ye aktarılır
Low Battery IndicationVar (5 seviye)
Power SourceDC 11.1 V 2600 mAh lityum pil (şarj edilebilir)
Maximum Input VoltageDC 120 V (positive and negative uç arasında)
Accuracy Environment23 °C ±5 °C, <75% relative humidity
Withstand VoltageAC 3700 V/RMS (devre ile kasa arası)
External Magnetic Field Limit<40 A/m
StandardsIEC 61010
CertificationsCE

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