


เครื่องทดสอบความเป็นฉนวน (Insulation Testers) หรือ เมกโอห์มมิเตอร์ (Megohmmeters) จาก Hioki โดดเด่นด้วยการออกแบบที่รวมทุกอย่างไว้ในหนึ่งเดียว (All-in-one) มาพร้อมเคสที่แข็งแรงทนทานในตัว และมีช่องสำหรับจัดเก็บสายวัดทดสอบให้เรียบร้อย
specifications
Rated output voltage | 50 V DC | 125 V DC | 250 V DC | 500 V DC | 1000 V DC | |
|---|---|---|---|---|---|---|
Effective maximum indicated value | 100 MΩ | 250 MΩ | 500 MΩ | 2000 MΩ | 4000 MΩ | |
Accuracy | ±2 % rdg. ±2 dgt. | ±2 % rdg. ±2 dgt. | ±2 % rdg. ±2 dgt. | ±2 % rdg. ±2 dgt. | ±2 % rdg. ±2 dgt. | |
Lower limit resistance | 0.05 MΩ | 0.125 MΩ | 0.25 MΩ | 0.5 MΩ | 1 MΩ | |
Overload protection | 600 V AC (10s) | 660 V AC (10s) | ||||
DC voltage range | 4.2 V (0.001 V resolution) to 600 V (1 V resolution), 4 ranges, | |||||
AC voltage range | 420 V (0.1 V resolution) / 600 V (1 V resolution), 2 ranges, 50/60 Hz, | |||||
Low resistance range | For checking the continuity of ground wiring, 10 Ω (0.01 Ω resolution) to 1000 Ω (1 Ω resolution), 3 ranges, Basic accuracy: ±3 % rdg. ±2 dgt., testing current 200 mA or more (at 6 Ω or less) | |||||
Display | Semi-transmissive FSTN LCD with back lighting, bar-graph indicator | |||||
Response time | Approx. 0.8 second for PASS/FAIL decision (based on in-house testing) | |||||
Other functions | Live circuit indicator, Automatic electric discharge, Automatic DC/AC detection, Comparator, Drop proof, Auto power save | |||||
Power supply | LR6 (AA) alkaline batteries ×4, Continuous use: 20 hours (Comparator off, backlight off, 500 V range, no load) | |||||
Dimensions and mass | 159 mm (6.26 in) W × 177 mm (6.97 in) H× 53 mm (2.09 in) D, 600 g (21.2 oz) (including batteries, excluding test leads) | |||||
Included accessories | [IR4056-20] Test lead L9787 ×1, Neck strap ×1, Instruction manual ×1, LR6 (AA) alkaline batteries ×4 | |||||
อุปกรณ์เสริม
TEST LEAD L9787 Bundled with alligator clip, 1.2 m (3.94 ft) length
BREAKER PIN L9787-91 For checking breaker terminal, Detachable for tip of the L9787, 48 mm (1.89 in) length, φ 2.6 mm (0.10 in)
TEST LEAD WITH REMOTE SWITCH (RED) L9788-10 Lighting LED lamp & comparator indicator (Operate only when main unit provides a comparator function), 1.2 m (3.94 ft) length
TEST LEAD SET WITH REMOTE SWITCH L9788-11 Bundled with Test Lead with Remote Switch L9788-10/ Earth lead, alligator clip, 1.2 m (3.94 ft) length
TIP PIN L9788-90 Spare parts for tip of the L9788/ L9788-10, Tip length 35 mm (1.38 in)/φ 3.2 mm (0.13 in)
BREAKER PIN L9788-92 For checking breaker terminal, Detachable for tip of the L9788-10, 65 mm (2.56 in) length, φ 2.6 mm (0.10 in)
FUSE SET Z5052 Replacement fuse set (0.5 A/1000 V, 2 pieces)
MAGNETIC ADAPTER 9804-02 Attaches to the tip of cord, black ×1, φ11 mm (0.43 in)


