Unit UT677A+ 0–70V Battery Internal Resistance Tester
- Brand: Unit
- SKU: UT677A+
- MPN: UT677A+
- Price: 20830.85 TRY + VAT · incl. VAT 24997.02 TRY
- Availability: Made to order
- Cell and Battery Testers
- Selection guide: Electrical and Electronic Testers Selection Guide: Technical Criteria and Engineering Practice
Unit 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 Range | 0.000–±7 V · ±0.2% fs ±10 dgt (1 mV); 7–±71.00 V · ±0.2% fs ±10 dgt (10 mV) |
|---|---|
| Gram | 674.0 g (pil dahil) |
| Bluetooth | Var (PC yazılımı ve Bluetooth uygulaması desteklenir) |
| Storage Environment | -20–60 °C; <70% bağıl nem |
| Display | 3.5″ renkli ekran (480×320) |
| Comparative Measurement | PASS, WARNING, FAIL eşikleri önceden ayarlanabilir |
| Auto Power Off | Var (yaklaşık 15 min) |
| Response Time | 200 ms (test süresi 2 s) |
| Operating Environment | -10–40 °C; <80% bağıl nem |
| Product Dimensions | 170 mm × 115 mm × 65 mm |
| Battery Internal Resistance Measurement | 0.000–3 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 Method | İç direnç: 1 kHz AC dört uçlu (4-terminal) yöntem; açık devre uç gerilimi en çok 3 V |
| Measuring Current | 2.0 mA–200 mA (kademeye göre değişir) |
| Refresh Rate | 5 ölçüm/s |
| Noise Immunity | Var (otomatik frekans ayarı 920–1080 Hz) |
| Measuring Mode | Manuel ve otomatik ölçüm |
| Data Hold | Otomatik/manuel |
| Memory | 500 set |
| Interfaces | Type-C; test verisi kaydedilir ve PC'ye aktarılır |
| Low Battery Indication | Var (5 seviye) |
| Power Source | DC 11.1 V 2600 mAh lityum pil (şarj edilebilir) |
| Maximum Input Voltage | DC 120 V (pozitif ve negatif uç arasında) |
| Accuracy Environment | 23 °C ±5 °C, <75% bağıl nem |
| Withstand Voltage | AC 3700 V/RMS (devre ile kasa arası) |
| External Magnetic Field Limit | <40 A/m |
| Standards | IEC 61010 |
| Certifications | CE |