Chat Live
Contact Us
sales@valuetronics.com
The HT Instruments PV-ISOTEST is a handheld photovoltaic insulation tester engineered specifically for verification, maintenance, and safety testing of PV systems operating up to 1500VDC. As modern PV installations increasingly adopt 1500V rated architectures to enable longer strings, higher generated power, and reduced balance-of-system losses, the verification instruments serving those installations must extend beyond the legacy 1000V envelope. The PV-ISOTEST is positioned by HT Instruments as a purpose-built solution for that 1500V-class PV verification requirement, with the test voltages, measurement categories, and standardized test procedures aligned to IEC/EN62446-1.
The PV-ISOTEST is used by PV commissioning technicians, O&M field personnel, and inspection engineers performing the safety checks specified in IEC/EN62446-1: insulation resistance of active PV conductors, continuity of protective conductors, and DC/AC voltage measurement between poles and earth. The DUAL insulation mode is intended for end-to-end verification of an unearthed PV field, providing a single-test OK/NO result for the positive and negative conductors simultaneously without requiring an external switch to short the array. The GFL function is intended for locating a single low-insulation fault along a string — for example, a fault caused by water or humidity ingress — with the instrument reporting the approximate module position of the fault.
HT Instruments (HT Italia S.r.l.) is an Italian manufacturer of electrical and photovoltaic test and measurement instrumentation, founded in 1983 and headquartered in Faenza, Italy. The company operates under continuous ownership and has not been part of an acquisition or rebrand within the T&M sector.
| DC Voltage | |
|---|---|
| Range (V) | Resolution (V) |
| 3 to 1500 | 1 |
| Accuracy: ±(1.0% reading + 2 digits) |
| AC TRMS Voltage | |
|---|---|
| Range (V) | Resolution (V) |
| 3 to 1000 | 1 |
| Accuracy: ±(1.0% reading + 3 digits) |
| Insulation Resistance (MΩ) – DUAL Mode | |||
|---|---|---|---|
| Test Voltage DC [V] | Range [MΩ] | Resolution [MΩ] | Accuracy |
| 250, 500, 1000, 1500 | 0.1 to 0.99 | 0.01 | ±(5% reading + 5 digits) |
| 1.0 to 19.9 | 0.1 | ||
| 20 to 100 | 1 |
| Insulation Resistance (MΩ) – TIMER Mode | |||
|---|---|---|---|
| Test Voltage DC [V] | Range [MΩ] | Resolution [MΩ] | Accuracy |
| 250, 500, 1000, 1500 | 0.1 to 9.99 | 0.01 | ±(5.0% reading + 5 digits) |
| 10.0 to 99.9 | 0.1 |
| Continuity of Protective Conductors (RPE) | ||
|---|---|---|
| Range (Ω) | Resolution (Ω) | Accuracy |
| 0.00 to 9.99 | 0.01 | ±(2% reading + 2 digits) |
| 10.0 to 99.9 | 0.1 | |
| 100 to 1999 | 1 | |
| Test current: >200 mA DC up to 5Ω (cables included); Resolution: 1 mA; Accuracy: ±(5.0% reading + 5 digits); Open-circuit voltage: 4 < Vo < 10V |
| GFL (Ground Fault Locator) Function | ||||
|---|---|---|---|---|
| Test Voltage DC [V] | Range [MΩ] | Resolution [MΩ] | Accuracy | Accuracy of Position |
| 250, 500, 1000, 1500 | 0.1 to 0.99 | 0.01 | ±(5.0% rdg + 5 dgt) | ± 1 module |
| 1.0 to 19.9 | 0.1 | |||
| 20 to 100 | 1 |
| Power Supply | |
|---|---|
| Battery type | 6 x 1.5V alkaline batteries type AA LR06 or 6 x 1.2V rechargeable batteries type AA LR06 |
| Battery duration | approx. 500 tests (for each function) |
| Auto Power OFF | after 5 minutes' idling |
| Output Interface | |
|---|---|
| PC interface | optical/USB |
| Reference Standards | |
|---|---|
| Instrument safety | IEC/EN61010-1, IEC/EN61010-2-030, IEC/EN61010-2-033, IEC/EN61010-2-034 |
| EMC | IEC/EN61326-1 |
| Accessory safety | IEC/EN61010-031 |
| General | IEC/EN62446 |
| MΩ measurement | IEC/EN61557-2 |
| RPE measurement | IEC/EN61557-4 |
| Insulation | double insulation |
| Pollution level | 2 |
| Measurement category | CAT III 1500VDC, CAT III 1000VAC; MAX 1500VDC / 1000VAC between inputs |
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
HT
Condition
New
Manufacturer
HT Instruments
Test voltage
1.5 kV
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
Request A Quote
