HVP-275 Features ĦE Sealed by " O" Ring. ĦE 8 voltage settings: 240Vac, 2kV, 6kV, 11kV, 22kV, 33kV, 132kV, and 275kV ĦE High bright LEDs visual indication ĦE Sound indication ĦE Easy-to-proov method ĦE Self-test selection ĦE Use 3 x 1.5V Ħ§CĦ¨ batteries ĦE High impact nylon casing ĦE Non-contact work by proximity ĦE Compatible with most link sticks ĦE Light weight, robust, & compact ĦE Suitable for indoor and outdoor use ĦE Detect low voltage on any systems ĦE Easy access to batteries ĦE No special parts needed ĦE Three-year warranty ĦE Simple and efficient to use
Specifications:
- Introduction:
- The TECPEL HVP-275 is a high voltage proximity detector.
- It has eight voltage detection settings from 240Vac to
- 275kVac. The HVP-275 consists of an internal pickup
- sensor plate, a sensitivity selector, a visual and a
- sound annunciator. With the HVP-275, physical contact
- with electrical conductors is not necessary when
- testing for live lines. This tester works by proximity.
- Its sensor senses the radiated field which surrounds
- live conductors. Radiated field strength increases
- with voltage and decreases quickly with distance or
- earth shielding. The radiated field from a cable of
- closely bunched conductors supplied by three phase
- power tends to cancel (See Ħ§Limitations of useĦ¨
- paragraph). Detecting distance of a 250Vac single
- live wire is approximately 10cm. With a bunched
- neutral and earth cable, as in a flexible cable, the
- distance is reduced to 5cm.
- Some of the typical uses are : identify and check live
- cables; find fault in flexible cables; check earth
- equipment; service neon lightning; trace live wires;
- check high frequency radiation; detect residual or
- induced voltages. For example, faults in damaged
- flexible cables are found by applying low voltage to
- each conductor. Earthing the remainder and moving
- the tester along the cable until the change in condition
- is obtained. (Flexible cables which are used in mining
- and building industries, are readily repairable when
- the break in the cable is located.)
- When testing for high voltage, the rotary switch
- (attenuator) is used to identify and differentiate
- various HV live cables. The tester must be used in
- conjunction with a long and insulating rod when
- measuring high voltage (kV). However, the HVP-275 is
- a non-contact tester and it is advised that the tester
- should never come into contact with cables (kV) as
- this tester is merely a non-contact AC proximity tester.
- Checking or proofing the tester is easy. Switch the
- sensitivity to 240V and place the dome against a low
- voltage live conductor or rub the dome with a cloth or
- against an item of clothing as this generates a static
- DC which triggers the detection of circuit. The light
- and beeper should go Ħ§onĦ¨ as if a live wire is being approached. Approaching the dome near a computer screen or a TV screen should also trigger
- the tester while on the 240V selection. The power consumption of the 275HP is very low, and the
- tester should always be tested as described above before using it.
- Specifications:
- Expected test results ( laboratory testing ) :
- Range
- 240V
- 2kV
- 6kV
- 11kV
- 22kV
- 33kV
- 132kV
- 275kV
- Typical observation of test results made in the field :
- Range
- 11kV
- 22kV
- 33kV
- 132kV
- 275kV
- Operated from
- Variable from 80V
- or depending on the type of source
- 250V
- 500V
- 1000V
- 1500V
- 4000V
- 8000V
- 22kV
- Min. Detection MDV as % of
- Voltage (MDV) Line Voltage
- 1kV 9.1%
- 2kV 9.1%
- 3.1kV 9.4%
- 12.5kV 9.5%
- 22.5kV 8.2%
- Limitation of usage.
- Limitations of use :
- It is recommended that the 275HP is not used in HV yards of mixed voltages.
- In the presence of mixed voltages, the tester can become unreliable.
- Problems can arise when the tertiary circuit of a 275/133/11kV transformer is
- tested. The electric field of the HV and MV bus bars can trigger the detector when
- it is about 3m above the ground. This is common with most of the electric field
- voltage detectors, and the users should be aware of it. The tester can pick up
- adjacent circuit to the one being tested and indicate the wrong information to the
- user. Limitations of use :
- It is recommended that the 275HP is not used in HV yards of mixed voltages.
- In the presence of mixed voltages, the tester can become unreliable.
- Problems can arise when the tertiary circuit of a 275/133/11kV transformer is
- tested. The electric field of the HV and MV bus bars can trigger the detector when
- it is about 3m above the ground. This is common with most of the electric field
- voltage detectors, and the users should be aware of it. The tester can pick up
- adjacent circuit to the one being tested and indicate the wrong information to the
- user.
- Minimum Order: Negotiable
- TEL: 886-2-27375866
- FAX: 886-2-27373343
- E-mail: sales@tecpel.com, tecpel@seed.net.tw
Certificate:
CE