The IRISS CAP-CT Series Large Format Rectangular Infrared Inspection Windows are designed to provide a large, visually clear inspection area for thermal and visual inspection of energized electrical equipment.
The CAP-CT Series features the patented Poly-View™ reinforced polymer optic, which allows thermographers to inspect electrical assets through a fixed inspection point without routinely opening the equipment enclosure.
Available in five models—CAP-CT-4, CAP-CT-6, CAP-CT-12, CAP-CT-18 and CAP-CT-24—the series provides a range of large rectangular viewing apertures for different electrical equipment and inspection requirements.
Compared with traditional round infrared inspection windows, the rectangular design provides a significantly larger field of view. This can help thermographers inspect a wider area of equipment and achieve greater viewing flexibility.
The CAP-CT Series is constructed from powder-coated 5052 aluminum, incorporates 316 stainless steel hardware, and features an automatically grounded design.
It is recommended for indoor electrical inspection applications, including medium- and high-voltage equipment.
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✔ Large-format rectangular infrared inspection window
✔ Patented Poly-View™ polymer optic
✔ Visual, UV and IR transmissive optic
✔ Supports shortwave, midwave and longwave infrared inspection
✔ Large viewing area for an expanded field of view
✔ More than 6× the field of view of a traditional 4-inch round window
✔ Fixed and Stable Transmission (FAST) design
✔ Durable polymer-based optic
✔ IP65 / NEMA 4 environmental rating
✔ Operating temperature from -40°C to +273°C
✔ Powder-coated 5052 aluminum construction
✔ 316 stainless steel hardware
✔ Automatically grounded
✔ Locking cover available for added protection
✔ Suitable for medium- and high-voltage applications
✔ Supports ultraviolet (UV) inspection
✔ Supports ultrasound inspection
✔ Supports visual inspection
✔ UL Listed
✔ UL 746 compliant optic
✔ Unconditional lifetime warranty
✔ Suitable for indoor electrical inspection applications
| Specification | CAP-CT-4 | CAP-CT-6 | CAP-CT-12 | CAP-CT-18 | CAP-CT-24 |
|---|---|---|---|---|---|
| General Specifications | |||||
| Overall Height | 15.24 cm (6.00 in) | 21.74 cm (8.56 in) | 20.55 cm (8.09 in) | 21.74 cm (8.56 in) | 21.74 cm (8.56 in) |
| Overall Width | 15.24 cm (6.00 in) | 16.00 cm (6.30 in) | 30.48 cm (12.00 in) | 45.72 cm (18.00 in) | 60.96 cm (24.00 in) |
| IP / NEMA Rating | IP65 / NEMA 4 | ||||
| Operating Temperature | -40°C (-40°F) to 273°C (523°F) | ||||
| Body Material | Powder Coated 5052 Aluminum | ||||
| Gasket Material | UL 94 5VA TPE; -40°C (-40°F) to 273°C (523°F) | ||||
| Hardware Material | 316 Stainless Steel | ||||
| Voltage Range | Any | ||||
| Automatically Grounded | Yes | ||||
| Optic Specifications | |||||
| Viewing Aperture Height | 9.78 cm (3.85 in) | 16.15 cm (6.36 in) | 14.02 cm (5.52 in) | 14.02 cm (5.52 in) | 14.02 cm (5.52 in) |
| Viewing Aperture Width | 9.68 cm (3.81 in) | 9.68 cm (3.81 in) | 23.19 cm (9.13 in) | 39.14 cm (15.41 in) | 53.85 cm (21.20 in) |
| Optic Material | Poly-View™ UL 746 compliant, visual, UV and IR transmissive polymer; -40°C (-40°F) to 110°C (230°F) | ||||
| Optic Reinforcing Grill Material | Aluminum Reinforcing Grill (IP22/ IP2x Standard) | ||||
| Inspection Capabilities and Applications | |||||
| Midwave IR and Longwave IR; Ultraviolet (UV); Ultrasound; Visual Inspection; Medium/High Voltage Applications | |||||
| Certifications | |||||
| UL Listed (E491496) Certified by UL (USA) & cUL (Canada) to: 50V, 50E, 756C, 746C & 746A-2012, 1558, 508A ANSI 508A CSA C22.2 No. 14-13, 14-10, 94-M91, 94.1-07, 94.2-07 Lloyds of London Type Approval American Bureau of Shipping (ABS) DNV (Det Norske Veritas) P261.1E Maritime, Vessel and Offshore Applications IEEE C37 20.7 Type 2B, C37 20.2.a.3.6 IEEE 60980-344:2020 Seismic Qualification IEC 62271-200, 60262271-200, 60298 Appendix A, 60068-2-6:2007, 60068-2-3, 60068-2-78:2012 |
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Discover the IRISS CAP-CT Series Infrared Inspection Windows
Are you looking for a large-format infrared inspection window for electrical equipment that provides a wider field of view than traditional round inspection windows?
The IRISS CAP-CT Series is designed for professional thermal inspection of energized electrical equipment through a large rectangular viewing area.
Its patented Poly-View™ polymer optic provides visual, UV and infrared transmission, allowing maintenance teams to use multiple inspection technologies through the same inspection point.
The CAP-CT Series is available in five sizes:
- CAP-CT-4
- CAP-CT-6
- CAP-CT-12
- CAP-CT-18
- CAP-CT-24
The large-format design is particularly useful where thermographers need greater viewing coverage and flexibility inside electrical equipment.
Key Benefits of the CAP-CT Series
Unparalleled Field of View
One of the major advantages of the CAP-CT Series is its large rectangular viewing area.
Compared with a traditional 4-inch diameter round infrared inspection window, the CAP-CT Series can provide more than six times the field of view.
The larger viewing area provides thermographers with greater flexibility when positioning an infrared camera and inspecting components inside electrical equipment.
This can be particularly useful when several components or a larger section of equipment needs to be viewed through a single inspection window.
Large Rectangular Viewing Area
Traditional infrared inspection windows commonly use circular viewing apertures.
The CAP-CT Series uses a large rectangular inspection area, allowing a wider section of the equipment interior to be viewed.
The available models provide different aperture sizes to accommodate various switchgear and electrical equipment configurations.
The largest model, CAP-CT-24, provides a viewing aperture approximately 21.20 inches wide.
Patented Poly-View™ Optic
The CAP-CT Series uses the patented Poly-View™ optic system.
The optic is a UL 746 compliant visual, UV and IR transmissive polymer.
It is designed to support inspection across multiple technologies, including:
- Infrared thermography
- Ultraviolet inspection
- Visual inspection
- Ultrasound inspection
This multi-technology capability makes the CAP-CT Series suitable for condition monitoring programs where different inspection techniques are used.
Fixed & Stable Transmission
The CAP-CT polymer infrared window system incorporates Fixed and Stable Transmission (FAST) technology.
The system is designed to maintain stable transmission characteristics throughout the life of the installation.
This helps provide a consistent inspection point for ongoing thermal inspection and condition monitoring.
Durable and Rugged Construction
The CAP-CT Series is designed for demanding electrical and mechanical applications.
The polymer-based inspection optic is designed to withstand mechanical stresses while providing the required transmission characteristics for inspection.
The housing is manufactured from powder-coated 5052 aluminum, while the hardware uses 316 stainless steel.
The inspection window also incorporates an aluminum reinforcing grill designed around IP22 / IP2x standards.
Protective Locking Cover
The CAP-CT Series can be equipped with a locking cover to protect the inspection optic.
The cover is particularly useful in areas where inspection windows may be exposed to:
- Accidental impact
- Flying debris
- Dust
- High-traffic environments
The cover helps protect the viewing area when the inspection window is not being used.
Environmentally Protected Inspection
The CAP-CT Series is rated IP65 / NEMA 4.
This environmental rating makes the inspection window suitable for indoor electrical applications where protection against environmental conditions is required.
The combination of the aluminum housing, gasket and reinforced optic provides a robust inspection access point for electrical equipment.
Multi-Technology Inspection Capability
The CAP-CT Series is designed to support several inspection technologies.
Infrared Inspection
The Poly-View™ optic supports infrared thermography, including shortwave, midwave and longwave infrared inspection.
Thermographers can use compatible thermal imaging cameras to inspect electrical components through the installed inspection window.
Ultraviolet Inspection
The optic is also designed to support ultraviolet inspection.
This provides an additional inspection method for electrical condition monitoring applications.
Ultrasound Inspection
The CAP-CT Series supports ultrasound inspection, allowing users to incorporate acoustic inspection techniques into their maintenance programs.
Visual Inspection
The visually transmissive optic allows users to perform visual inspection through the inspection window.
Electrical Inspection Without Routine Enclosure Opening
The CAP-CT Series provides a dedicated inspection access point for electrical equipment.
Once properly installed, compatible inspection equipment can be used through the inspection window without routinely opening the electrical enclosure for each inspection.
This can help maintenance teams improve inspection accessibility while supporting safer and more efficient condition monitoring practices.
The manufacturer positions the CAP-CT Series for inspection applications involving energized electrical equipment and closed/guarded inspection practices.
Always follow the applicable electrical safety procedures, equipment manufacturer’s instructions and site-specific safety requirements when performing inspections.
Suitable for Medium- and High-Voltage Applications
The CAP-CT Series is specified for medium- and high-voltage applications.
The supplied specifications identify the voltage range as Any and specify an automatically grounded design.
This makes the series suitable for integration into a wide range of electrical inspection applications where an installed infrared inspection point is required.
CAP-CT Series Models
The CAP-CT Series is available in five models.
IRISS CAP-CT-4
The CAP-CT-4 is the compact option in the series.
It has an overall height and width of 6.00 inches (15.24 cm).
Its viewing aperture measures approximately:
- 3.85 inches high
- 3.81 inches wide
The CAP-CT-4 is suitable where a smaller rectangular inspection area is required.
IRISS CAP-CT-6
The CAP-CT-6 provides a taller rectangular viewing area.
Its overall dimensions are approximately:
- Height: 8.56 inches (21.74 cm)
- Width: 6.30 inches (16.00 cm)
The viewing aperture measures approximately:
- Height: 6.36 inches (16.15 cm)
- Width: 3.81 inches (9.68 cm)
IRISS CAP-CT-12
The CAP-CT-12 provides a substantially larger rectangular inspection area.
Its overall dimensions are approximately:
- Height: 8.09 inches (20.55 cm)
- Width: 12.00 inches (30.48 cm)
The viewing aperture measures:
- Height: 5.52 inches (14.02 cm)
- Width: 9.13 inches (23.19 cm)
IRISS CAP-CT-18
The CAP-CT-18 provides an 18-inch-wide large-format inspection window.
Its overall dimensions are:
- Height: 8.56 inches (21.74 cm)
- Width: 18.00 inches (45.72 cm)
The viewing aperture measures:
- Height: 5.52 inches (14.02 cm)
- Width: 15.41 inches (39.14 cm)
IRISS CAP-CT-24
The CAP-CT-24 is the largest model in the CAP-CT Series.
Its overall dimensions are:
- Height: 8.56 inches (21.74 cm)
- Width: 24.00 inches (60.96 cm)
The viewing aperture measures:
- Height: 5.52 inches (14.02 cm)
- Width: 21.20 inches (53.85 cm)
The CAP-CT-24 is designed for applications requiring an exceptionally large rectangular inspection area.
CAP-CT Series Technical Specifications
General Specifications
| Specification | CAP-CT-4 | CAP-CT-6 | CAP-CT-12 | CAP-CT-18 | CAP-CT-24 |
|---|---|---|---|---|---|
| Overall Height | 15.24 cm (6.00 in) | 21.74 cm (8.56 in) | 20.55 cm (8.09 in) | 21.74 cm (8.56 in) | 21.74 cm (8.56 in) |
| Overall Width | 15.24 cm (6.00 in) | 16.00 cm (6.30 in) | 30.48 cm (12.00 in) | 45.72 cm (18.00 in) | 60.96 cm (24.00 in) |
| IP / NEMA Rating | IP65 / NEMA 4 | IP65 / NEMA 4 | IP65 / NEMA 4 | IP65 / NEMA 4 | IP65 / NEMA 4 |
| Operating Temperature | -40°C to +273°C | -40°C to +273°C | -40°C to +273°C | -40°C to +273°C | -40°C to +273°C |
| Body Material | Powder Coated 5052 Aluminum | Powder Coated 5052 Aluminum | Powder Coated 5052 Aluminum | Powder Coated 5052 Aluminum | Powder Coated 5052 Aluminum |
| Gasket Material | UL 94 5VA TPE | UL 94 5VA TPE | UL 94 5VA TPE | UL 94 5VA TPE | UL 94 5VA TPE |
| Hardware Material | 316 Stainless Steel | 316 Stainless Steel | 316 Stainless Steel | 316 Stainless Steel | 316 Stainless Steel |
| Voltage Range | Any | Any | Any | Any | Any |
| Automatically Grounded | Yes | Yes | Yes | Yes | Yes |
Optic Specifications
| Specification | CAP-CT-4 | CAP-CT-6 | CAP-CT-12 | CAP-CT-18 | CAP-CT-24 |
|---|---|---|---|---|---|
| Viewing Aperture Height | 9.78 cm (3.85 in) | 16.15 cm (6.36 in) | 14.02 cm (5.52 in) | 14.02 cm (5.52 in) | 14.02 cm (5.52 in) |
| Viewing Aperture Width | 9.68 cm (3.81 in) | 9.68 cm (3.81 in) | 23.19 cm (9.13 in) | 39.14 cm (15.41 in) | 53.85 cm (21.20 in) |
| Optic Material | Poly-View™ UL 746 compliant visual, UV & IR transmissive polymer | Same | Same | Same | Same |
| Optic Temperature Range | -40°C to +110°C | -40°C to +110°C | -40°C to +110°C | -40°C to +110°C | -40°C to +110°C |
| Optic Reinforcing Grill | Aluminum Reinforcing Grill | Aluminum Reinforcing Grill | Aluminum Reinforcing Grill | Aluminum Reinforcing Grill | Aluminum Reinforcing Grill |
Inspection Capabilities and Applications
The CAP-CT Series is designed to support:
| Inspection Capability | Supported |
|---|---|
| Shortwave IR | ✔ |
| Midwave IR | ✔ |
| Longwave IR | ✔ |
| Ultraviolet (UV) | ✔ |
| Ultrasound | ✔ |
| Visual Inspection | ✔ |
| Medium-Voltage Applications | ✔ |
| High-Voltage Applications | ✔ |
CAP-CT Series Certifications and Standards
The supplied product information identifies the CAP-CT Series with the following certifications, approvals and standards:
UL Listed
UL Listed – E491496
Certified by UL (USA) and cUL (Canada) to applicable standards including:
- 50V
- 50E
- 756C – Impact and Flammability
- 746C & 746A-2012
- 1558 – Impact and Load Resistance
- 508A – ANSI 508A
- CSA C22.2 No. 14-13
- CSA C22.2 No. 14-10
- CSA C22.2 No. 94-M91
- CSA C22.2 No. 94.1-07
- CSA C22.2 No. 94.2-07
Additional Certifications and Approvals
The supplied information also identifies:
- Lloyd’s of London Type Approval
- American Bureau of Shipping (ABS)
- DNV (Det Norske Veritas)
- P261.1E Maritime, Vessel and Offshore Applications
- IEEE C37.20.7 Type 2B
- IEEE C37.20.2.a.3.6 – Impact and Load
- IEEE 60980-344:2020 – Seismic Qualification
- IEC 62271-200
- IEC 60298 Appendix A
- IEC 60068-2-6:2007
- IEC 60068-2-3
- IEC 60068-2-78:2012
Why Choose the IRISS CAP-CT Series?
The IRISS CAP-CT Series is designed for electrical maintenance teams that need a large, reliable inspection area for thermal and visual condition monitoring.
Its combination of a large rectangular viewing aperture, Poly-View™ polymer optic, rugged aluminum construction and multi-technology inspection capability provides a flexible solution for electrical inspection applications.
The large field of view can make it easier for thermographers to locate and inspect multiple components through a single inspection point.
The CAP-CT Series can therefore be considered for applications where a conventional small round infrared window does not provide sufficient viewing coverage.
Applications
The CAP-CT Series can be used for inspection of various electrical equipment, including:
- Switchgear
- Electrical panels
- Medium-voltage equipment
- High-voltage equipment
- Switchboards
- Motor control centers
- Distribution equipment
- Electrical cabinets
- Industrial electrical systems
- Power distribution equipment
- Other enclosed energized electrical equipment
CAP-CT Series for Electrical Condition Monitoring
Regular electrical inspection can help maintenance teams identify abnormal conditions before they develop into more serious equipment problems.
The CAP-CT Series provides a dedicated inspection point for thermal imaging and other inspection technologies.
By integrating inspection windows into electrical equipment, organizations can establish repeatable inspection locations and support routine condition monitoring programs.
The large-format rectangular design is particularly useful where a wider field of view is required.
Choose the Right CAP-CT Model
The appropriate CAP-CT model depends on the required viewing area and the available installation space.
CAP-CT-4 – Compact rectangular viewing area
CAP-CT-6 – Taller rectangular inspection area
CAP-CT-12 – Large 12-inch-wide inspection area
CAP-CT-18 – Large 18-inch-wide inspection area
CAP-CT-24 – Extra-large 24-inch-wide inspection area
Selecting the correct model should be based on the equipment configuration, required field of view, installation location and inspection requirements.
Frequently Asked Questions
What is the IRISS CAP-CT Series?
The IRISS CAP-CT Series is a range of large-format rectangular infrared inspection windows designed for thermal, UV, ultrasound and visual inspection of electrical equipment.
What optic does the CAP-CT Series use?
The CAP-CT Series uses a patented Poly-View™ UL 746 compliant visual, UV and IR transmissive polymer optic.
How many CAP-CT models are available?
The series includes five models: CAP-CT-4, CAP-CT-6, CAP-CT-12, CAP-CT-18 and CAP-CT-24.
What is the largest CAP-CT model?
The CAP-CT-24 is the largest model, with an overall width of 24 inches (60.96 cm) and a viewing aperture width of 21.20 inches (53.85 cm).
What is the temperature rating?
The complete CAP-CT Series has a specified operating temperature range of -40°C to +273°C. The Poly-View™ optic itself is specified from -40°C to +110°C.
What inspections can be performed through the CAP-CT window?
The supplied specifications identify support for shortwave IR, midwave IR, longwave IR, UV, ultrasound and visual inspection.
Is the CAP-CT Series suitable for high-voltage equipment?
Yes. The supplied product information identifies the CAP-CT Series for medium- and high-voltage applications.
Is the CAP-CT Series environmentally rated?
Yes. The series has an IP65 / NEMA 4 rating.
Is the CAP-CT Series automatically grounded?
Yes. The supplied specifications identify an automatically grounded design.
IRISS CAP-CT Series – Large Format Infrared Inspection Windows
The IRISS CAP-CT Series combines a large rectangular viewing area with Poly-View™ polymer optic technology to provide flexible access for infrared, UV, ultrasound and visual inspection.
With five available models and large viewing apertures, the series can be selected for different electrical equipment configurations and inspection requirements.
For organizations looking to improve electrical thermal inspection, condition monitoring and preventive maintenance, the CAP-CT Series provides a dedicated inspection point while helping reduce the need for routine enclosure opening.
Contact Agile Microsys Pvt. Ltd. to discuss the appropriate IRISS CAP-CT Series model for your electrical inspection application.
Request Product Information
Looking for the right IRISS Infrared Inspection Window for your electrical inspection application?
Contact Agile Microsys Pvt. Ltd. for product information, technical assistance and enquiries.
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