| Convenient kit
to test both underground and overhead live cables. |
The Basic
Functions are as under :
* To verify system voltage
* To detect in-phase / out-of-phase parameters between two lines |
The Kits are
available in two versions :
1. Dedicated Unit : Suitable for a particular system voltage 11kV,
22kV & 33kV.
2. Versatile Unit : Suitable to Test Lines of 11kV / 22kV / 33kV in
a single Kit.
Optional : Suitable to test lines of 6.6kV / 11kV / 22kV in a single
kit. |
The
main instrument consists of high impedance components - epoxy cast
encased in two Fibre glass hollow tubes. The units are available
in two configurations. |
Config
A :
For INDOOR as well as OUTDOOR applications. In this configuration
the LPD contact probe can be bent at convenient angles of 45 deg.
or 90 deg. for use inside a switchgear panel. |
Config
B :
For OUTDOOR applications in this configuration straight lengths
of 1.5 mts each of the phase probes are used.
For testing overhead lines another 2 mts. extension can be fitted
to this standard probe. (Please specify configuration and lengths
of probes in your order).
The instrument has a 5 meter long cable connecting the voltmeter
and the probes and can be wound on the spindle mounted on one of
the probes.
The instrument will be supplied with either a soft bag or a wooden
box complete with manual. (Please indicate your choice in your order). |
| Principle
of Operation :
A capacitive divider network is formed inside t/he upper section
marked `A' in the drawing. A small voltage derived from this is
brought to the instrument for indication of voltage/phasing measurements.
H.V. Rod - Line one is connected to the instrument and when the
rod is touched to the H.V. Line/terminal, the indicator meter show
the line voltage.
For phase checking the instrument is switched to the voltage measured
on LINE ONE. The second rod is connected to LINE TWO. When the two
Rods are now connected to the two cores to be checked; the meter
shows whether they are in phase (near zero deflect) or out of phase
(near full deflection). If one of the core is not live, the meter,
will show in centre. Line two rod, when connected, switches the
equipment automatically to phase comparison. |
| Safety
Feature :
In case of any flash over, the flashing voltage will be discharged
through the earthing point & no harmful voltage will be at meter
or user end. |
Other Accessories
:
a) Checking Device : Battery operated tester to check H.V. rod and
the monitoring unit.
b) Hand Gloves : 2 pairs of hand gloves of suitable HV grade.
c) Earth leads and connecting leads. |
