Fluke 1535 Insulation Resistance Tester and Megohmmeters

• Customization: Available
• Warranty: 3 years
• Certification: RoHS, CE
• Model NO.: Fluke 1535
• Product Type: Megohmmeter
• Display: 73.5 mm x 104 mm
• Battery: 8 AA alkaline cells, IEC LR6
• Operating temperature: -10 °C to +50 °C
• Operating altitude: 2000 m
• Sized (H x W x L): 184 mm x 211 mm x 93 mm
• Weight (battery included): 1.3 kg
• Enclosure rating: IP54 (protected against dust, limited ingress; pro
• Transport Package: Carton
• Origin: China

Product Description

Product Description

Fast, accurate, reliable insulation testing in a portable lightweight package

The Fluke 1535 and 1537 2,500 V Insulation Resistance Testers are engineered to simplify frontline troubleshooting whether you're on the factory floor or working in the field at a solar installation. With user selectable test voltages from 250 V to 2,500 V and resistance measurements up to 500 GΩ these testers allow you to cover more workload with a single tool. Equipped with an intuitive user interface, a short circuit current of up to 5 mA and a CAT IV 600 V rating these portable high-voltage insulation testers can deliver rapid and stable resistance measurements no matter where you take them. The 1537 Insulation Resistance Tester also allows you to store measurements for later review or PC transfer, using the provided software.

• Selectable Voltage Tests:Tailor your tests with user-selectable voltages of 250 V, 500 V, 1000 V, and 2500 V to cover both industrial and solar applications.
• Extended Insulation Resistance Measurement: Reach up to 500 GΩ in insulation resistance measurement for a thorough analysis.
Intelligent Calculations: Automatically calculate Polarization Index (PI) and Dielectric Absorption Ratio (DAR), minimizing the influence of environmental factors.
• High Measurement Capacity: Execute up to 1,300 measurements at 2,500 V or 6,500 measurements at 250 V on a single charge, enhancing productivity.
• Enhanced Safety Features: Benefit from a CAT IV 600V rating and a built-in voltage alarm function for heightened safety during operations.

Features

Model

• User-selectable voltages of 250 V-2500 V

• Up to 500 GΩ insulation resistance measurement

• Short circuit current up to 5mA for fast, stable measurements

• Automatically calculate PI and DAR

• Perform 1,300+ insulation tests on a single charge

Models: Fluke 1535 2500V Insulation Tester

Includes:

• Fluke 1535 Insulation Reistance Tester

• Test leads with alligator clips (red, black, green)

• Soft carrying case

Specification

General Specifications
Display	73.5 mm x 104 mm
Battery	8 AA alkaline cells, IEC LR6
Dimensions (H x W x L)	184 mm x 211 mm x 93 mm
Weight	1.3 kg
Temperature
Operating temperature	-10 °C to +50 °C
Storage temperature	-20 °C to +60 °C
Operating humidity	Non-condensing (<10 °C) ≤80 % RH (10 °C to 30 °C) ≤50 % RH (30 °C to 50 °C)
Altitude
Operating altitude	2000 m
Storage altitude	12000 m
Overvoltage category	CAT IV 600 V
Safety
General	IEC 61010-1, Pollution Degree 2 IEC 61557-1
Measurement	IEC 61010-2-030: CAT IV 600 V IEC 61010-2-034: 2500 V dc
Insulation resistance measurement	IEC 61557-1, IEC 61557-2
IP Rating	IEC 60529 IP40
Electromagnetic Compatibility (EMC)
International	IEC 61326-1: Electromagnetic environment for portable equipments IEC 61326-2-2 CISPR 11: Group 1, Class A

Electrical Specifications
The meter's accuracy is specified for one year after calibration at operating temperatures of 10°C to 30°C. For operating temperatures outside the range (-10°C to +10°C and +30°C to +50°C), add ± 0.25% per °C, except on the 20% bands, add ± 1% per °C.
Insulation resistance testing
Test voltage	Range	Resolution	Accuracy
250 V	<200 kΩ	Unspecified	Unspecified
	200 kΩ to 500 kΩ	1 kΩ	5 %
	0.50 MΩ to 5.00 MΩ	.01 MΩ	5 %
	5.0 MΩ to 50.0 MΩ	0.1 MΩ	5 %
	50 MΩ to 500 MΩ	1 MΩ	5 %
	0.50 GΩ to 5.00 GΩ	0.01 GΩ	5 %
	5.0 GΩ to 50.0 GΩ	0.1 GΩ	20 %
	>50 GΩ	Unspecified	Unspecified
500 V	<200 kΩ	Unspecified	Unspecified
	200 kΩ to 500 kΩ	1 kΩ	5 %
	0.50 MΩ to 5.00 MΩ	.01 MΩ	5 %
	5.0 MΩ to 50.0 MΩ	0.1 MΩ	5 %
	50 MΩ to 500 MΩ	1 MΩ	5 %
	0.50 GΩ to 5.00 GΩ	0.01 GΩ	5 %
	5.0 GΩ to 10.0 GΩ	0.1 GΩ	5 %
	10.0 GΩ to 50.0 GΩ	0.5 GΩ	20 %

	50 GΩ to 100 GΩ	5 GΩ	20 %
	>100 GΩ	Unspecified	Unspecified
1000 V	<200 kΩ	Unspecified	Unspecified
	200 kΩ to 500 kΩ	1 kΩ	5 %
	0.50 MΩ to 5.00 MΩ	.01 MΩ	5 %
	5.0 MΩ to 50.0 MΩ	0.1 MΩ	5 %
	50 MΩ to 500 MΩ	1 MΩ	5 %
	0.50 GΩ to 5.00 GΩ	0.01 GΩ	5 %
	5.0 GΩ to 20.0 GΩ	0.1 GΩ	5 %
	20.0 GΩ to 50.0 GΩ	0.5 GΩ	20 %
	50 GΩ to 200 GΩ	5 GΩ	20 %
	>200 GΩ	Unspecified	Unspecified
2500 V	<200 kΩ	Unspecified	Unspecified
	200 kΩ to 500 kΩ	1 kΩ	5 %
	0.50 MΩ to 5.00 MΩ	0.01 MΩ	5 %
	5.0 MΩ to 50.0 MΩ	0.1 MΩ	5 %
	50 MΩ to 500 MΩ	1 MΩ	5 %
	0.50 GΩ to 5.00 GΩ	0.01 GΩ	5 %
	5.0 GΩ to 50.0 GΩ	0.1 GΩ	5 %
	50 GΩ to 500 GΩ	5 GΩ	20 %

Insulation test voltage accuracy: -0 %, +10 % @ 1 mA load current Charging rate for capacitive load: 5 s/μF Discharging rate for capacitive load: 1.5 s/μF

Range	Accuracy
Leakage current measurement	1 nA to 2 mA	±(20 % + 2 nA)
Capacitance measurement	0.01 μF to 2.00 μF	±(15 % rdg + 0.03 μF)
Test voltage for insulation resistance	250 V to 2500 V	±(3 % + 3 V)
Warning for energized circuit
Warning range	>30 V
Timer (F1537 only)
Range	0 to 99 min
Resolution	Setting: 1 min	Alert: 1 s
Short circuit current
F1535	>2 mA
F1537	>5 mA
ACV/DCV/resistance measurement (1537 only)
Function	Range	Resolution	Accuracy ±(% rdg + dgt)
VAC	0 V to 600.0 V	0.1 V	±(2 % +10) (45 Hz to 500 Hz)
VDC	0 V to 600.0 V	0.1 V	±(2 % +10)
Resistance	0 Ω to 600.0 Ω	0.1 Ω	±(2 % +10)
	600 Ω to 6000 Ω	1 Ω
	6.00 kΩ to 60.00k Ω	0.01 kΩ

Company Profile

BNSENS (Nanjing) Sensor Technology Co., Ltd. is located in Nanjing, China. It is a high-tech enterprise specializing in the development, manufacturing and trade of sensor products. The company has brought together a group of outstanding technical experts in various fields such as automation, electronics, machinery and computers. All employees of the company have college degrees or above. It adopts the world-class management and operation model and 6 sigma quality system. At present, the company's main products are pressure, liquid level, flow, current, switches, etc. The company's users are all over the country, and some products have been exported to Japan, South Korea and Southeast Asia.

Since its inception, the company has been based on the technical accumulation and management standards of American sensor giants. It is composed of senior engineers and managers who have served in multinational companies for many years, and has rapidly developed various pressure sensors, transmitters, liquid level, flow meters, pressure switches, digital meters, current sensors, proximity switches and other products. After years of unremitting efforts, it has become one of the leading suppliers in the domestic automation industry. Our pressure transmitters can achieve an accuracy of more than 3/10,000. The products have been widely used in oil, natural gas, electricity, chemical industry, metallurgy, building materials, food, light industry, environmental protection, aerospace, tap water, municipal and other industries.

It is a sensor science and technology innovation company that masters the core technology of MEMS chips. The company has a research and development center in Minnesota, USA. The leader is Dr. Pan Hanjin, a famous scientist in the sensor industry. Dr. Pan Hanjin has been deeply involved in the sensor industry for more than 20 years and is an expert in the sensor industry.

The company has a number of ASIC chips independently developed, which are widely used in industrial, automotive, home appliance and other markets.

BNSENS (Nanjing) Sensing Technology Co., Ltd. is a strategic partner of Honeywell in China. The two parties proposed a plan of East serving East and jointly developed several sensors specifically for the Chinese market. These sensors will be widely used in intelligent manufacturing, Internet of Things, artificial intelligence, and smart home fields. These sensors include: magnetic sensors, temperature sensors, humidity sensors, force sensors, fire water pressure sensors, equipment vibration sensors, human body status monitoring sensors, motion sensors, etc.

History of BNSENS Company:

BNSENS is a company focusing on sensors, instruments, and electronic components. We are a young company, founded in 1999, just 25 years old, and we are still growing.

1999: The company's first pressure sensor was launched, mainly for the petroleum and petrochemical industries.

2002: The company expanded its product line and launched temperature sensors

2005: Started producing high-precision pressure sensors for the test and measurement market

2006: Became an official authorized agent of Honeywell

2009: Introduced the Six Sigma management system, and the product qualification rate was greatly improved

2010: Became a supplier of Emerson

2011: We started selling SICK sensors

2014: Introduced the sensor production line from Germany, developed more industrial control sensors, and cooperated with TSMC

2015: Cooperated with Siemens in Vietnam

2017: The factory moved to Nanjing High-tech Zone

2019: Became a national high-tech enterprise in China

2023: We started selling products from Infineon and Rohm

2025: We started cooperating with Fluke

BNSENS,The Future Starts Here.