JPS6021502A - High voltage water resistor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water resistor used as a dummy load in testing of high-voltage emergency power source equipment.

Conventionally, as a water resistor used for Sanwa AC electric discharge,
Water three parallel 1ati rods connected to each phase of the power supply! '
! It is known that the electrode rod is inserted directly into the water and the submerged depth of the electrode rod is changed to obtain a flexible load. In this case, water is constantly supplied from the water supply port in the water tank in order to suppress the rise in water temperature in the water tank 4 and obtain stable resistance. However, 5) When the water is supplied to a platform where the resistance is small, sparks are generated from the electrode rod, causing the power load to become unbalanced and making it impossible to adjust the load. In addition, since the supplied water is diffused throughout the water Fq, the electrode rod and its surroundings become locally high temperature, causing bubbles to form and adhere to the surface of the pole rod, causing arcing to occur from this area. Similarly, there is the problem that load adjustment is impossible.

The present invention was made by focusing on the above-mentioned problems of conventional water resistors, and by providing one more grounded neural electrode rod in the center of the three electrode rods, The pressure of the counter electrode 9 is lowered, and a water outlet is provided almost directly below each electrode rod, and the water jet is directed directly toward each electrode rod to cool it and blow away air bubbles that form near the surface of the electrode rod. , the purpose is to resolve the above-mentioned conventional problems.

The invention will now be described in detail with reference to the figures. The support plate 1 is suspended from the upper part of the water tank 10 by a wire 8 so as to be movable up and down. On the lower surface of the support plate 1, there are four pole support rods 3a, 3 at the vertices and center of a substantially city triangle.
b + 3 c + 3 n are each fixed vertically. The three peripheral electrode support rods 3a, 3b, and 3c are electrically insulated from the support plate 1 by 7 degrees by an interposed insulator 2. The three electrode support rods 3a, 3b, and 3c are provided with connection terminals 4 for connecting four poles of each phase of the three-phase alternating current. Three trade support rods 3a, 3b.

Four supporting arms 5 extending horizontally are fixed to the lower ends of the electrodes 3c, and electrode rods 6a, 6b, 6c extending vertically downward are fixed to the tips of the supporting arms, respectively. Further, a neutral electrode rod 6n is fixed to the lower end of the central electrode support rod 3n, which extends vertically downward continuously. This neutral electrode rod 6n is connected to the other three electrode rods 6a, f.
It extends further downward than 3b and 6c, and is grounded via a 4-pole support rod n, a hanging ear 8, etc.

A bead-shaped bulge 7 is formed at the lower end of each of the '4 ux+ rods 6a, 6b, 6c, and 6n.

Thus, the d\ pole frame rods 6a16b1606n can be moved up and down along the vertical guide column 9 together with the support plate 1 above them.

Water 1'l 10 is provided below the electrode rods 6a, 6b, 6c, and 6n so that they can be lowered and inserted into water.

Inside the water tank 10, there are four upper electrode rods (3a, 6b).
Four fountain nozzles 11 are provided with their tips facing oppositely to +6c and 6n. These Hinaga nozzles 1
1 is supplied with water through a water pipe 12, and water is sprayed from the tip water opening 11a toward each of the electrode rods 6a, 6b, 6c, and 6n.

Next, the effect will be explained. 8〒゛) Shelf rod 6a+61+, 6c
, 6n into the water is consumed as heat due to the water's resistance to lli. At this time, the electrode rod 6a
.

6b, 6c, and 6n are heated, but a water jet is constantly jetted toward them from the fountain port 11a, and they are efficiently cooled, and air bubbles generated near the surface of the cylinder frame rod are blown up by the jet flow. [i] does not adhere to the surface of the rod, and therefore the arc group ↑n is suppressed.

Due to the presence of the neutral electrode rod 6n, the counter electrode voltage is 7 (
v) is relatively low, suppressing the release of 4.

The potential of an electrode rod tends to be concentrated and distributed at its tip, but
The ball-shaped groove 7 lowers the current density, equalizes the current distribution, and allows stable load adjustment.

As described above, the present invention provides three parallel electrode rods 6a connected to each phase of a three-phase alternating current source.

6b and 6c are inserted into a water tank 10 having a water fountain inside to obtain a load, the three electrode rods 6
A, 6b, 5(a), a neutral ?'
is grounded, and the water fountain 11a is connected to each of the four electrode rods 6a, 6b, 6c, and 6n.
1i'5, each end 1lfl rod 6a, 6b,
Since the configuration is such that rk = 8 water flows are directed directly to 6c and 6n, the pressure for one counter electrode is lowered, and each electrode rod 6a
, 6b, 6c, and 6n, and at the same time prevent air bubbles from adhering to the surface of the electrode rod, and even if the water supply is reduced to about 80% of the conventional level, the occurrence of dodging is prevented. The effect of suppressing the resistance and showing a stable resistance value can be obtained.

[Brief explanation of drawings]

Figure 1 is a front view, Figure 2 is a plan view, Figure 953 is Figure 1 r
It is an rt-trr cross-sectional view. 5... Support arm, 6 a, 6 b, 5 c...
・Electrode rod, 6n, ...neutral 7tJfj rod, 1
0...Aquarium, 11...Nozzle, 11a...
Fountain mouth.

Claims (1)

[Claims] In a water resistor that obtains a load by vertically inserting three parallel electrode rods connected to each phase of a three-phase AC power source into a water tank having a cocoon water port inside, A long neutral fly pole rod is provided approximately in the center of the three electrode rods and is located below the electrode rods, and this electrode rod is grounded. 1. A high-pressure water resistor, characterized in that one is provided so as to direct a fountain flow directly to each electrode rod.