HV TEST (PTY) LTD - HVTEST South Africa

H.V. TEST (PTY) LTD
3 Gaiety Ave, Robindale, Randburg, South Africa, 2010
Tel: +27(11) 782 1010 Fax: +27(11) 782 2770
P.O. Box 651287, Benmore, 2010
Email: [email protected]
Website: www.hvtest.co.za
Voltage Monitoring Inputs (V1 & V2)
One analog voltage input channel (designated as V1) is dedicated to monitoring a
circuit-breaker dc power supply or a coil voltage (0 to 255 volts, dc or peak ac).
A second voltage input channel (designated as V2) is dedicated to detecting voltage on/off status (presence or absence) of an A/B switch (an input range of 30300 V dc or peak ac).
Trip/Close Current Monitoring
A built-in Hall-effect current sensor records the Trip/Close current level and duration.
The Trip/Close coil current waveform (effectively, a performance “fingerprint” or current profile) can be used as a diagnostic tool for analysis of a breaker’s performance.
Breaker Stroke and Velocity
CT-8000
TM
The Vanguard Instrument Company, Inc. Model CT-8000™ EHV Circuit-Breaker
Analyzer is a fifth-generation design configuration. The Model CT-8000 is a standalone, microcomputer-controlled Circuit-Breaker Analyzer that is inexpensive and
easy to use. It operates in either of two modes: As a traditional Time-vs-Travel analyzer or as a Quick-Shot (on-line timing). The CT-8000 is available with either 3
dry contacts (CT-8000-3) or 6 dry contacts (CT-8000-6) configurations. Both
models are supplied with 3 digital travel transducer input channels.
Quick Shot Mode
In the Quick-Shot mode, the CT-8000 captures the breaker’s trip or close time, the
Trip/close-coil current “fingerprint,” and the battery-supply voltage (while the
breaker is still on-line and in service). Trip/close time is derived from the time of
trip, or at the close-coil initiation, to the breaker’s bushing current-break or -make
(detected by an ac clamp-on current-probe).
With a simple connection, the Quick-Shot mode detects a breaker’s operating conditions with little or no down (out of service) time. The Quick-Shot mode captures
the First-Trip Operation time of the breaker. When a breaker has been in service
for a long time (such as sitting in a closed position), the time of the breaker's first
trip may be slow (e.g., due to a "sticky" mechanism). Traditional breaker timing
may not detect this condition, since several operations may have occurred before
the first timing test is conducted.
Conventional Time-versus-Travel Analyses Mode
In the Time-Travel mode, the CT-8000 analyzes circuit-breaker performance,
namely: contact time, stroke, velocity, over-travel, and wipe. A 200-ampere, builtin, power supply allows the CT-8000 to perform contact dynamic-resistance tests.
Contact-motion analyses include: Open, Close, Open-Close, Close-Open, and OpenClose-Open switching sequences. The timing window is selectable: 1-second, 10second, or 20-second periods. The 10-second and 20-second windows allow timing of long-duration events (e.g., circuit-switching contacts).
Breaker Contact Timing Inputs
Three digital travel transducer channels enable the CT-8000 to measure stroke, overtravel, and bounce-back. Unlike other types of travel transducers, the digital transducer requires no calibration or setup. A contact-velocity calculation is based on a contact’s
travel distance over a period of time, which is defined by the breaker manufacturer’s
specifications. A special feature lets users “slow-close” a breaker and produce a testresult report.
Dynamic Contact Resistance
One channel of Dynamic Contact Resistance test is also available. A built-in 200-ampere
power supply provides the test current for this application. Resistance measurement
ranges from 1 micro-ohm to 1999 micro-ohms. The dynamic resistance test allows the
user to monitor contact resistance during circuit breaker operation. This feature allows
the user to detect circuit-breaker contact erosion, or contact problems that can not be
detected in static resistance test. The CT-8000 can be used as a 200-ampere, micro-ohm
meter to check circuit-breaker contact resistance, bus connection, or other applications
where a low-resistance measurement is required.
Resistor Type Transducer Input Channel
One resistor type input channel is also available with the CT-8000. This input channel
allows the CT-8000 to interface directly with resistive type transducers. The transducer
resistance ranges from 200 ohm to 10K Ohm.
Timing Shot Storage Capabilities
The CT-8000 uses Flash Electrically Erasable PROMs (EEPROMs) to store timing data.
Unlike other storage media, EEPROMs are immune to shock, temperature, and humidity. Stored timing shots can be recalled to re-analyze test data, print copies, or transfer
data to an IBM-PC database for record keeping. Up to 150 timing shots can be stored
in the EEPROMs.
Circuit-Breaker Test Plan
Up to 99 breaker test plans can be stored in the CT-8000. Test plans comprise all
breaker specifications (stroke, velocity, contact time). By recalling a test plan, the
user can instantly test a breaker and view a pass/fail report (made by comparing
performance with specifications in the stored test plan). A user doesn’t need to
look-up a breaker’s specifications to compare with test results to determine if the
breaker passed performance tests or not. Test plans can be downloaded to the CT8000 via an RS-232C serial port or via a USB port.
Breaker Initiate Features
A built-in, solid-state, initiate device allows users to remotely operate the breaker
from the CT-8000. The operational mode includes: Open, Close, Open-Close,
Close-Open, and Open-Close-Open. Multiple operation (e.g., Open-Close, OpenClose-Open) can be initiated by using a programmable delay time or by sensing the
breaker’s contact condition.
Circuit Breaker Time-Travel Analy
Contact timing uses dry-contact input channels. Each contact-input channel can detect
main contact and insertion-resistor contact times (displayed in milliseconds & cycles).
H.V. TEST (PTY) LTD
3 Gaiety Ave, Robindale, Randburg, South Africa, 2010
Tel: +27(11) 782 1010 Fax: +27(11) 782 2770
P.O. Box 651287, Benmore, 2010
Email: [email protected]
Website: www.hvtest.co.za
alyze
Computer Interface
User Interface
One RS-232C Interface port and one USB port allows the CT-8000 to be controlled
from an IBM-PC-compatible computer. From the PC, circuit breakers can be timed
and users can retrieve timing shots that have been saved in the CT-8000 flash EEPROM. Windows® XP-based Breaker-Analysis software lets users retrieve test-shot
data stored in the computer’s hard-drive disk, re-analyze the stored data, and generate reports in the office on an IBM-compatible computer. This PC software also
allows users generate customized test-result reports and to create a circuit-breaker
database library. Additionally, users can create circuit-breaker test plans to be
downloaded to the CT-8000.
An alpha-numeric keypad allows users to enter breaker ID and control functions.
A 4-line by 20-character LCD readout displays user messages. The LCD is back
lighted so messages can be viewed in low light levels. Display contrast is controlled
via the CT-8000 keypad.
Built-in Thermal Printer
A built-in thermal printer prints the breaker contact analysis results in both tabular and graphic formats on 4.5-inch-wide thermal paper.
Linear
Transducer
Voltage Input
Channels
Contact Timing
Channels
Travel Transducer
Connectors
USB Connector
RS-232C
Connector
4x20 Backlit
LCD Display
Current Lead
Connector
Sense Lead
Connector
Power Receptacle
Module
Resistor Transducer
Input
Breaker Initiate
Output
4.5-inch
Thermal Printer
Rugged 16-Key
Membrane Keyboard
Breaker Initiate
Arm Switch
ABB
AHMA-8
Mechanism
Transducer
H.V. TEST (PTY) LTD
3 Gaiety Ave, Robindale, Randburg, South Africa, 2010
Tel: +27(11) 782 1010 Fax: +27(11) 782 2770
P.O. Box 651287, Benmore, 2010
Email: [email protected]
Website: www.hvtest.co.za
Graphic and
Tabulated Printouts
▼ Built-in Thermal Printer Output
▼
EEPROM Stored Test Parameters
▼ Trip Time Using Quickshot Mode
Trip Time Using Bushing CT
Trip Coil Current Profile
CT-8000
H.V. TEST (PTY) LTD
3 Gaiety Ave, Robindale, Randburg, South Africa, 2010
Tel: +27(11) 782 1010 Fax: +27(11) 782 2770
P.O. Box 651287, Benmore, 2010
Email: [email protected]
Website: www.hvtest.co.za
pensive Digital Circuit Breaker Tester
FEATURES
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On-Line Timing/Capture First Trip Time
Static & Dynamic Resistance Tests
Full Breaker Tabulated & Graphic Data Printout
Output Test Results to Built-in Thermal Printer
Digital Travel Transducer; No Setup or Calibration Required
Supports Resistance Type Transducers
Detect Main Contact and Insertion Resistor Contact on the Same Input Channel
On-Board Flash EEPROM Shot Storage/Test Plan Storage
Computer Interface (RS-232C or USB)
SPECIFICATIONS
TYPE
PHYSICAL SPECIFICATIONS
INPUT POWER
DRY-CONTACT INPUT
TIMING WINDOWS
TIMING RESOLUTION
TIMING ACCURACY
CONTACT DETECTION RANGE
RESISTOR DETECTION RANGE
CT CURRENT SENSOR
EXTERNAL TRIGGER INPUT
VOLTAGE SENSING INPUT RANGE
BREAKER OPERATION
BREAKER INITIATE CAPACITY
INITIATE CURRENT READING RANGE
TRAVEL TRANSDUCER INPUT
CONTACT TRAVEL POINT DIFFERENCE
DYNAMIC/STATIC RESISTANCE RANGE
RESISTANCE TEST CURRENT
RESISTOR TYPE TRANSUCER CHANNEL
DISPLAY
PRINTOUT
TEST RECORD STORAGE
COMPUTE INTERFACE
PC SOFTWARE
SAFETY
ENVIRONMENT
OPTIONS
WARRANTY
yzer
Special purpose test equipment, portable circuit breaker analyzer
16” W by 11” H by 14” D (40.6 cm x 29.9 cm x 35.6 cm); Weight; 25 lbs (11.3 kg)
90-130 Vac or 200-240 Vac (selectable), 50/60Hz
3 or 6 dry-input channels; Each channel detects Main and Insertion-Resistor Contacts
Selectable: 1-second, 10-seconds or 20-seconds
50 microseconds at 1-second duration; 0.5 milliseconds at 10-second duration;
1.00 milliseconds at 20-second duration
0.05% of reading, ±50 microseconds at 1-second duration
Closed: <20 ohms, Open:> 5,000 ohms
50 – 5,000 Ohms
One, None Contacting, 0-150 Amp
Open/Close: 30-300V dc or peak ac
V1: analog input; 0–255 V, dc or peak ac, Sensitivity: ± 1 V; V2: voltage detector (present/absent)
input; 30-300V, dc or peak ac
Open, Close, Open-Close, Close-Open, Open-Close-Open
25 A/250 V ac/dc max (100A Inrush)
One, Non-contact, Hall-Effect sensor, 0-20-amp range, dc to 5 kHz
3 digital travel transducer channels; Linear range, 0.0-30.0 in (±0.01 in); Rotary range 0-360° (±0.36°)
Measures “Slow-Close” contact-point distances (hard copy printout)
0.1 to 1,999 micro-ohm, Accuracy: ±2% of reading, ±5 micro-ohm
200 Amperes Typical
200 Ohm to 10 K Ohm
4 lines by 20 character back-lit LCD, sunlight viewable
Both graphic contact-travel waveforms & tabulated results are printed on a 4.5-inch thermal printer
Store up to 150 timing records and 99 test plans
RS-232C port, USB Port
Furnished Circuit breaker analysis software running under Windows XP; features graphic display,
numerical reports, and data base utility for use at shop or office.
Designed to meet UL 6101A-1 Certification and CAN/CSA C22.2 No 1010.1-92
Operating: -10°C to 50°C (+15°F to +122°F); Storage: -30°C to70°C (-22°F to +158°F)
Hard case for shipping; available for both Travel Transducers and CT-8000
One-year warranty on parts and labor
Note: The above specifications are valid at nominal voltage and ambient temperature of +25°C (+77°F). Specifications are subject to change without notice.
H.V. TEST (PTY) LTD
3 Gaiety Ave, Robindale, Randburg, South Africa, 2010
Tel: +27(11) 782 1010 Fax: +27(11) 782 2770
P.O. Box 651287, Benmore, 2010
Email: [email protected]
Website: www.hvtest.co.za