HN-2K03B Full Automatic Transformer Test Equipment

I Brief Introduction

HN-2K03B Fully Automatic Transformer Test Equipment is a perfect high-tech product that combines modern technology of electron, computer, communication and control. Composed of high performance control single-chip machine and relative electron line, its core area––a control, check and observation system, from which voltage is output through regulating transformers of manual, semiautomatic and automatic. Driven by precision electric machine, coupled with double channel design (heavy gauge wire and fine wire), thus enable a high and stable resolution of output-voltage.

When used with its corollary equipment HN-2K01B Automatic Mutual Inductor Calibration Instrument, they together constitute an automatic calibration system for whole measurement. If connected with computer through serial interface, it will form a three-position automatic calibrating system through which the following tasks can be automatically completed such as step-up or step-down voltage or current, fixed-point measurement, transmit and process measurement data, print measurement data, original record and provide a standard certification of proof, etc., thus a more scientific and programmed calibration and measurement can be made effectively. This calibration system can be widely applied to the sectors of electricity ranging from voltage, current mutual inductor, voltage and current load box, indeed indispensable and high efficiency equipment.

II Main Features

■HCI (human computer interaction), 320×240 lattice large-scale screen at any conditions can clearly display.

liquid crystal digital display, lar

■All operation and state description in Chinese with clear and graceful character style.

■All error measurement specified in JJG313-94/JJG314-94 can be automatically completed with no PC help.

■Real-time measurement and display output voltage and current.

■All operations have double hardware protection, polarity protection and ratio error discrimination, in special condition, press protection switch to end current operation.

■Adjust voltage output by precision electric machine; response at top speed, smooth in adjusting process ,stable positioning at stop point and strong anti-interference.

■Automatically switching span in accordance with measurement data, can meet needs of different precision for required measuring point in regulation, automatic (manual) measurement of full load running and light running for routine.

■Full program control electron load box, automatic switching for voltage and current at top speed, no need artificial calculation and manual gearshift, avoid wrong option of shift.

■Voltage output parts composed of coarse and fine regulating transformer with high accuracy and stable output value.

■Connected with computer, data communication and data management software can be operated in WINDOWS95/98、2000、XP environment, operating data storage, query and print, automatic error modify, display tested mutual inductor error curve, statistic submitted program.

■The whole set adopts international standard 19-inch operator console and case, with fine technology, graceful style and rational arranged structure. Specially equipped with rolling wheel for easy move and convenient installation.

■ For user’s need, function for voltage endurance test can be extended.

III Main Functions

■Basic function

Bearing the following four basic functions for measurement such as voltage mutual inductor, current mutual inductor error (proportional, angular), impedance and admittance, and can detect 1-12 current mutual inductor at one time.

■Voltage Output Adjustment

1. Manual regulating range: voltage (%): 1~120

Current (%): 1~120

2. Automatic regulating point: voltage (%) :20, 50, 80, 100, 120

Current (%):1, 5, 20, 100, 120

■Over-current automatic protection

1. When measurement for over-current at some point, coarse and fine regulating transformer will return to zero, accompany by sound cue and status display.

2. When current output over amperage, over-current protective air switch will trip off automatically.

■Emergency manual protection

When meet emergency, manual press protection knob, cut off regulating transformer input.

■Polarity reversal automatic protection

When operated with its corollary equipment <<HN-2K01B Fully Automatic Mutual Inductor Calibration Instrument >>, if measure polarity reversal, regulating transformer will automatically return to zero and, accompany by sound cue and status display.

■Voltage and current output supervisory.

Operator can directly supervise voltage and current output through display screen of controller.

■Communication

1. Through serial interface, communicate with<<HN-2K01B Fully Automatic Mutual

Inductor Calibration Instrument>> and transmit measurement results.

2. Communicate with microprocessor through serial interface and accept its controlling

password to perform automatic measurement.

IV Performance Index

1.Operating power: AC220V±10%50HZ±10%

2.Operational environment: temperature 0ºC~+40ºC

Relative humidity≤ 85%(25ºC)

3.Maximum output power: 9KVA

4.Automatic stable equilibrium point:

Voltage (%): 20,50, 80, 100, 120

Current (%): 1, 5, 20, 100, 120

5.Regulating transformer adjustment finess:

Coarse-adjusting regulating transformer: 1-2V

Fine regulating transformer: 0.025V

6.Display screen voltage & current supervisory and display:

Range: 0V~240V

Precision: 1%

7.Quick measurement for 12 mutual inductors at one time.

8.Over-current protection value: ≥20 A

9.Power loss: 22VA

10.Overall dimension (mesa):

1070mm(breath)× 1050mm(height) × 580mm (depth)

11.Overall dimension (vertical):

600mm(breath) × 1600mm (height) × 550mm (depth)

V System Components and Operating Fundamental

V(I) System Components

HN-2K03B Fully Automatic Transformer Test Equipment composed of the following parts: system controller, coarse and fine electric machine, coarse and fine regulating transformer, voltage and current load box, HN-2K01B Fully Automatic Mutual Inductor Calibration Instrument, over-current protection device, etc.Joint block diagram of components with external device and microprocessor system as below:

Diagram 1: System components with external device & microprocessor

V (II) Operating Fundamental

Diagram 2: Calibration system single-chip machine controlling system fundamental block diagram

As above, single-chip machine as the core area of controlling system, after receiving keyboard password, it will send out controlling password to the electric machine controller, gear the regulating transformer, adjust voltage output according to password prompt and direction, then real-time feedback through voltage and current detection circuit to single-chip machine and, compare with the required output value in order to adjust its control over electric machine until output value in an acceptable range, control stop and electric machine does not work. At the same time, liquid crystal display screen show a real-time output value. Pie graph of rated secondary voltage and amperage also real-time display in the window.

V(III) System Controlling Circuitry Fundamental Block Diagram &Operating Fundamental

Diagram3 System controlling circuitry fundamental frame

On condition that over current protection air switch in normal open position, when system cut-in 220V AC power, input voltage and current detecting module operate real-time detection and display input voltage of system, the number show voltage value and Power-on. After power switch turn to open position, system controller, calibration instrument and stepping motor connect through. When protection switch under normal position and regulating transformer at null position (RJ1) closure, press Start button, contactor coil switch-on and make contactor contact. Contactor JJ2 short circuit make it in latch status, start-stop indicator light shines and show that system can access adjustment. After adjustment over or end it, only regulating transformer at null position (RJ2 cut-off), press Stop button to cut off contactor coil, then contactJJ1 key off follow up the transformer. Protection button have double functions: when in emergency, it can cut off power; when end adjustment, press protection button, system in a protective status, now even if press start button, contactor can’t connect through, avoiding incorrect operation thus protect both operator and equipment.

Appendix One

HL-16B Multiple Current Transformer Test Rack

I. Brief Introduction

<<Multiple Current Transformer Test Rack>>, corollary equipment of <<HN-2K03B Fully Automatic Transformer Test Equipment>>, an operating rack for mating use or solely use as switching system for Multiple Current Transformer Test Rack.

This system can hang-test at one time 12< 2000A same ratio current transformer. When current input, one connection over, no need for repeat dismount and assemble. Every time change tested current transformer, just open its hang shaft.

Bearing graceful outlook and proper operating height, this system is equipped with rolling wheel for easy move; dismount, assemble and connection of this transformer is quick and convenient. Indeed an indispensable equipment to improve productivity by electricity department and factory!

II. Main Features

Two groups primary wire input terminal for different primary current conductor

Structure of hang-shaft as one end fixed and one open make convenient and reliable installation

Current transformer test rack can be selected for 1-12 transformer simultaneous measurement

Standard current transformer installed on test rack for easy connection

Tested transformer number with indicator light display, easy to observe and supervise

Mechanism design as reverse assemble for desk provide convenient package and transportation; in addition, rack storage can reserve test tools give clear operation site

Equipped with rolling wheel for the rack, make quick and easy move

III. Performance Index

Maximum CT test number:12

Minor center bore of tested CT: 30mm

Two groups primary current terminal:

Flat: :for 1000~2000A primary current wire

Round: for≤ 1000A primary current wire

Max primary current input: 2000A

Simultaneous test 12 transformers

Load characteristic: 28mΩ3%

Overall dimension: 1200mm(breath) × 60mm(height) × 600mm(thickness)

Total weight: rough 130KG

IV Operation Guide

Overall dimension of multiple current transformer test rack and each component installation position schematic drawing as below:

Frame1 Overall dimension and components installation position schematic drawing

IV(I) Desk Installation & Connection

IV(I)(i) HL-16 Precision Current Transformer & Desk Connection

Frame 2 Test Rack Desk components installation schematic drawing

Instruction of Installation

1) Loosen nuts of each end with wrench taken along with system, remove hang shaft from break side.

2) Put onto hang shaft one by one in same direction— tested terminal of current transformer that face rack primary current lead terminal L1, then put hang shaft back to fixed position; tighten up nut on each end.

3) Two type of hang shaft taken along with system, one round leader for 1000A test current transformer; one flat leader for 1000A~2000A test current transformer.

IV(I)(ii) Connection Steps

Connection diagram:

Note: (connection in bracket for measure higher high-tension primary internal impedance)

This diagram set standard connection for system, special need refer to actual nameplate connection diagram.

Instruction of connection

Look up connection diagram according to standards of tested transformer (see appendix),

select primary and second connection.

When select L2、 L3、L4 、 L5in primary connection, cut off shot wire that join

L6–L9, set “ L6–L9 option” knob in cut-off position.

When select L6、 L7、L8 、 L9in primary connection, cut off connection wire of

L2、 L3、L4 、 L5 . select primary connection shift through “ L6–L9 option ” knob, when primary internal impedance less than 120%, terminal knob of primary L6–L9 can be joined on “loading”, meanwhile cut off “L6–L9” terminal knob connection.

Connect “grounding terminal 250V ± K1 Kx ”on test rack desk, respectively with lead that

taken along with system, and respectively connect with homologous terminal knob of HL-16 precision current transformer one by one.

Second connection through “K2–K9”knob,set in demanded shift.

Rotate “input potential option” knob, select input potential shift V1 、 V2、 V3.

Instruction of shift option1: When primary current 1600A~2000A、5A~20A, usually select V2 shift; If less than 120%, select V1;input potential select V3.

IV (I)(iii) Test rack front plate connection, as below:

Frame 3 Test rack front plate components installation schematic drawing

Connect K1 terminal of first tested current transformer with down terminal (black) in CT1frame on rack connection plate through test lead that taken along with system; connect K2 terminal with upper terminal (red).

2) Similarly, connect from the second to the twelfth testedcurrent transformer in order with the rack.

3) When switch in “automatic” position, HN-2K03B FullyAutomatic Mutual Inductor Check-out System will automatic option tested transformer, and homologous indicator light shine of test number.

4) When switch in “manual” position, rotate “manual option knob, select tested transformer. Now, require in liquid crystal operation surface of HN-2K03B Fully Automatic Mutual Inductor Check-out System, set No.× tested transformer in “4.parameter option” to “No.13”.

5) If tested transformer less than 12, then must bridging relay contacts the last K2 of transformer with that of CT12 on test rack front plate.

IV(I)(iv) Test rack back plate connection

Frame 4 Test rack back plate connection components installation schematic drawing

1) Connect K terminal on rear plate through dedicated test lead with that of tested connect terminal “CT test frame” in HN-2K03B Fully Automatic Transformer Test Equipment.

2) Connect CTx terminal on rear plate through dedicated test lead with Tx terminal of test connection terminal “CT test frame” in HN-2K03B Fully Automatic Transformer Test Equipment.

3) Connect CTo terminal on back plate through dedicated test lead with To terminal of test connection terminal “CT test frame” in HN-2K03B Fully Automatic Transformer Test Equipment.

4) Respectively connect test rack rear plate 250V 、± terminal with 250V 、± output from rear plate regulating transformer in HN-2K03B Fully Automatic Transformer Test Equipment;

Ground terminal knob should be earthed.

5) Connect one end of connection cable that taken along with system to 9-chip aviation socket on test rack back plate, the other end connected with “CT desk interface” in HN-2K03B Fully Automatic Transformer Test Equipment.

V Points for attention

Make short circuit K1 and K2 terminal of tested CT, hanging up the shaft but not test with lead, otherwise will damage the test rack.

Tested current transformer must of same ratio type.

Especially big wrench not allowed for twist small nuts at primary input connection terminal of rack, otherwise it might break.

Pay attention to primary input connection terminal L1 &L2with HL-16 precision current transformer, if wrong connection when test, HN-2K03B Fully Automatic Transformer Test Equipment cue this information.

Test rack must be put in proper place that away from external magnetic field, actual distance depends on external magnetic field intensity.

If long disuse, drier should be put into every chassis and equipment placed indoors with environmental temperature 5ºC~40ºC, relative humidity no more than 80%(25ºC) and without any corrosive gas.

Operators for test rack must be professionals. Unprofessional operators are strictly prohibited. When measure high-current transformer, operator should wear gloves.

VI Maintenance

Test rack should be kept clean. Cleanse case with soft cotton cloth, and choose neutral detergent, if any.

When test rack need move, please use self-outfit rolling wheel and along flat surface. Never make rack suffer strong tossed and struck.

For normal operation and maintenance, quality guarantee period is 12 months from date of production.