High Voltage Holiday Detector is an instrument used to detect Porosity and holes in anti-corrosive coating (electrically insulated) on metallic pipes/surfaces. This test is carried before the pipes are laid underground.

The pipe is connected to the earth (nominal) and an electrode charged to high tension is moved over the coating. At the place of a hole, discontinuities arking takes place and the instrument gives a Sound Signal alarm.

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Salient Features

  • Holiday Detector is a fully solid state device having no moving parts making it maintenance-free.
  • Visual and Audible Signalling Alarms
  • Portable and Light Weight
  • Ergonomic Design
  • External Input Fuse for Accidental Protection.
  • Wide Range of Spring Electrodes, Brass brushes and Conductive brushes available.

Technical Specifications

Designed, Developed and Manufactured in Bharat
Input12 V DC
Output Variable (available ranges)
1 kV to 5 kV
2 kV to 10 kV
7 kV to 20 kV
7 kV to 25 kV
10 kV to 30 kV
10 kV to 35 kV
AlarmVisual and Audible
Protection
Battery Reverse Polarity
Input Fuse
IndicatorDigital or Analog as per Requirement
Size H X W X D (mm)180 x 280 x 120 App.
Weight2.5 Kg with Batteries
Included Standard Accessories
Pushing PVC Rod with Conducting Phosphor Bronze Brush and EHT cable.
Battery Charger (12VDC/300mA) Constant current
On Demand
External Batter Set 12V/10 AH
M.S Spring Electrodes for rolling over pipes
Battery Eliminator for 230 VAC operation

Recommended Voltages For Holiday Test

Thickness of Coating SystemDetector VoltageRecommended Holiday Detector
2.25 mm7,000 V10 KV
3.00 mm9,600 V15 KV
3.75 mm12,000 V15 KV
4.50 mm14,400 V20 KV
5.25 mm16,800 V20 KV
6.00 mm19,200 V25 KV
7.00 mm21,500 V25 KV
8.00 mm23,700 V30 KV
9.00 mm26,000 V30 KV
10.00 mm28,500 V30 KV

Holiday Detector with Standard Accessories

Extra Accessories on Demand

NoAccessories NamePhoto
1Probe with wire brush
2Wire Wick,Fan Type Brush
3Holiday Detector Conductive Rubber BrushHoliday Detector Round Rubber Brush For Inner Diameter 3(1)Holiday Detector Round Rubber Brush For Inner Diameter 3(1)
4Probe for Internal testing, Round Rubber Brush
5Spring Electrodes

M.S. Spring Electrodes for rolling over Pipes Standard Available Sizes

Wire Diameter in inch

2/ 3/ 4/ 6/ 8/ 10/ 12/ 14/ 16/ 18/ 20/ 22/ 24/ 26/ 28/ 30

Pipe Diameter in mm

50/80/100/150/200/250/300/350/400/450/500/550/600/650/700/750

Custom Made Higher Sizes Spring Electrodes are also available.