Dekal CPT-028 Cable & Plug Test Box — 28.5V DC | Aviation GPU Cable Testing

Dekal CPT-028 — Cable & Plug Test Box | 28.5V DC | Aviation Ground Power Testing

Part Number: CPT-028 Manufacturer: Dekal Load Banks Type: Cable / Plug Test Box — 28.5V DC Classification: CE Marking, DIN, VDE, IEC | IP21

The Dekal CPT-028 is a specifically designed, rugged cable and plug test box built for the testing and servicing of 28.5V DC power cables and aircraft/GPU plugs on the airport apron, air base, and in maintenance workshops. Part of Dekal's proven CPT (Cable Plug Tester) series, it is trusted by aviation ground support professionals in both civil and military operations worldwide.

The CPT-028 enables technicians to quickly verify DC power cable integrity, E&F control circuit function, and output voltage accuracy using the integrated 4-digit LED display — all without requiring a separate instrument for basic voltage confirmation. Isolated jack sockets provide a safe, user-friendly connection point for an external digital voltmeter or multimeter when more detailed measurements are required. The unit is designed to be operated by both trained and non-trained personnel, making it an effective tool for standardizing GPU cable verification procedures on any flight line or ramp operation.

Like all Dekal products, the CPT-028 ships complete in a compact transport carrying case with handle — included as standard in the unit price.

Key Features

• 28.5V DC Testing — purpose-built for DC power cable and aircraft/GPU plug verification
• 4-Digit LED Display for direct output voltage readout
• E&F Control Circuit Indication — control switch for pilot contact circuit testing
• Failure Indication — immediate fault detection during cable and plug verification
• Plug Test Pins / Isolated Jack Sockets for safe connection of an external measurement device (digital voltmeter/multimeter)
• 28V Transformer & Power Indicator Lights for operational status confirmation
• Simple Operation — suitable for non-trained operators on apron or in workshop
• Civil and Military Certified — MIL-SPEC rated, used worldwide in both commercial and military aviation applications
• Testing Procedure Compliant with ISO 6858, DFS 400, and ARP 5015
• 2-Year Full Warranty with extension option available
• Transport Carrying Case Included as standard — no additional charge
• Color Options Available — Yellow, Red, Black (others on request)

Specifications

• Input Voltage: 28.5V DC ± 10%
• Indication: 4-digit LED display for output voltage, power indicator lights, E&F control circuit, failure indication, plug test pins for external measurement device
• Testing Standards: ISO 6858, DFS 400, ARP 5015
• Device Classification: CE marking, DIN, VDE, IEC
• IP Protection Rating: IP21
• Operating Temperature: -20°C to +50°C (-4°F to +122°F)
• Maximum Altitude: 1,000 m without downgrading; max. 2,000 m
• Relative Humidity: 0% – 85% (without condensation)
• Unit Dimensions (L × W × H): 300 × 160 × 170 mm / 11.8" × 6.3" × 6.7"
• Unit Weight: 2.2 kg / 4.8 lbs
• Transport Case Dimensions (L × W × H): 500 × 300 × 220 mm / 19.7" × 9.8" × 8.7"
• Transport Case Weight: 3.6 kg / 8.0 lbs
• Warranty: 2 years full warranty with extension option
• Color Options: Yellow, Red, Black (custom colors on request)

What's Included

• Dekal CPT-028 Cable/Plug Test Box
• Compact transport carrying case with handle

Ideal Applications

The CPT-028 is built for aviation ground support professionals who need a fast, reliable, and portable solution for DC power cable and plug verification. It is well-suited for:

• Pre-operation verification of 28.5V DC GPU power cables and aircraft plugs
• E&F control circuit testing on commercial and military aircraft
• Airport apron and hangar maintenance operations
• Military air base ground support equipment (GSE) testing
• MRO facilities requiring standardized, compliant GPU cable verification procedures
• Field operations requiring a compact, rugged, carry-on test tool