MOHAMMAD MAHDI Electronics Trading LLC
Hioki ST5520 Insulation Tester
Brand:
Hioki
SKU:
6968
Ensure electrical safety with the Hioki ST5520, known for its high accuracy in insulation testing.
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Description
Overview
The Hioki ST5520 Insulation Tester is a bench-type instrument designed to verify the insulation resistance of electrical devices and components on the production line. With a fully adjustable DC test voltage from 25 V to 1000 V in 1 V steps, it can be tailored precisely to the device under test and the applicable safety standard.
Built for high-throughput manufacturing, the ST5520 delivers pass/fail assessments in as little as 50 ms and includes a quick residual-voltage discharge feature and a contact-check function for safe, reliable and repeatable testing.
Key Features
- Adjustable DC test voltage from 25 V to 1000 V in 1 V increments
- High-speed pass/fail assessment in as little as 50 ms
- Quick discharge of residual voltage for operator and device safety
- Contact-check function to confirm proper contact before testing
- Upper-Fail / Pass / Lower-Fail comparator judgment settings
- RS-232C and external I/O interfaces for automated system integration
Applications
- Insulation-resistance testing of electrical devices and components
- Production-line safety testing
- Automated inspection systems
- Quality control in electronics manufacturing
What’s in the Box
- ST5520 Insulation Tester main unit
- Power cord
- Instruction manual
- Standard accessories
Why buy from MME in UAE
MOHAMMAD MAHDI Electronics Trading LLC (MME) is a trusted supplier of Hioki test and measurement equipment in the UAE. We offer genuine products, competitive pricing, fast local delivery across Dubai, Abu Dhabi and the wider UAE, and knowledgeable after-sales support. 
Download the datasheet
Specifications
Specifications
Technical Specifications for Electrical Safety Tester
| Measurement Items | Insulation resistance (Applied DC voltage method) |
|---|---|
| Testing Voltage (Measurement Range) | AUTO/MANUAL setting is possible 25 V ≤ V < 100 V (2.000/20.00/200.0 MΩ) 100 V ≤ V < 500 V (2.000/20.00/200.0/2000 MΩ) 500 V ≤ V ≤ 1000 V (2.000/20.00/200.0/4000 MΩ) |
| Basic Accuracy | ±2 % rdg. ±5 dgt. 25 V ≤ V < 100 V [0 to 20 MΩ] 100 V ≤ V < 500 V [0 to 20 MΩ] 500 V ≤ V ≤ 1000 V [0 to 20 MΩ] |
| Measurement Speed | Fast: 30 ms/time, Slow: 500 ms/time (selectable) |
| Display | LCD (service life: 100,000 hours), 4-level backlight |
| Internal Memory | Saved items include rated measurement voltage, comparator upper limit/lower limit values, test mode, beep sound to distinguish the result, test time, response time, resistance range, measurement speed Memory capacity: up to 10 items (can be saved/loaded) |
| Comparator Setting | UPPER_FAIL: Measured value ≥ upper limit value PASS: Upper limit value > measured value > lower limit value LOWER_FAIL: Measured value ≤ lower limit value |
| Judgement Process | Beep sound, PASS / U.FAIL/L. FAIL: light up on LED display, When UL_FAIL, U.FAIL / L.FAIL light up simultaneously, EXT.I/O output, judgement result can be obtained via RS-232C |
| Test Duration | Definition of test duration: Test duration = Response time + Measurement time Function: Set the time from voltage application until pass/fail assessment Configuration range: 0.045 s to 999.999 s (0.001 s resolution) |
| Response Time Timer | After the start of the test, comparator judgment operation can be prohibited until a set interval from 0.005 sec. to 999.999 sec. (at 0.001 sec. resolution) has passed. |
| Analog Output | DC +4 V f.s. |
| Interface | RS-232C (standard), External I/O (External control input, Judgment result), BCD output (ST5520-01 only) |
| Power Supply | 100 to 240 V AC, 50/60 Hz, 25 VA max. |
| Dimensions and Mass | 215 mm (8.46 in) W × 80 mm (3.15 in) H × 166 mm (6.54 in) D, 1.1 kg (38.8 oz) |
| Included Accessories | Instruction Manual ×1, Power cord ×1, EXT. I/O Connector ×1, Connector Cover ×1 |
Reviews (1)
1 review for Hioki ST5520 Insulation Tester
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Bench Multimeters
hassan –
The Hioki ST5520 model exceeds expectations with its accuracy and ease of use – highly recommended!