 |
The Model 720, Compact Relay Parameter Test System [CRPT] is a member of Circuit Equipment Corporation's relay products testing family. It combines high accuracy, high speed, low cost and high reliability to produce the best parametric relay tester on the market. It is ideal for testing two-coil latching, one-coil latching, non-latching, DC and AC coil, time delay on operate and time delay on release type relays. It tests in accordance with MIL-PRF-6106L and MIL-PRF-83536A. Manufacturers and designers of relay products and related equipment will find it a valuable addition to their design, test and manufacturing applications.
There are two versions of the Model 720: The Remote PC version and the Embedded PC version. In the Remote PC version the 720 is controlled by an external PC over a serial interface using the Windows™ operating system. This version can test up to two relays simultaneously. The Embedded PC version contains its own embedded PC and provides external connections for a monitor and keyboard.
The Model 720 contains an internal analog processor, which accurately controls all timing, sequencing and testing. It contains clean internal power sources for very accurate low noise measurements. All high current contact load switching is performed in a separate shielded unit. This yields highly reliable and repeatable test results. All of the major Model 720 components are modular to allow easy repair, replacement or NIST traceable calibration.
With over twenty-four, user-defined test parameters, the 720 offers flexibility and precision in relay test applications. Contact loads can be programmed, from 0.0V to 6VDC in 1mV steps and from 0.0mA to 100mA in 1mA steps. Model 720 also includes a mid-load level of 28VDC @ 100mA. Using external supplies, the 720 can control loads up to 100VDC with currents up to 100ADC. The Model 720 with the 72040A (10 Amp) switch option is a direct replacement for the Markenrich™ tester .
Testing may be initiated with the press a button, a contact closure, or a foot pedal. In addition, the External PC version allows the testing of up to two relays with the click of a mouse. Status and control inputs/outputs are provided to allow easy interface to material handling/automated production systems. User-selectable production, engineering or QC data output modes are also available. In the engineering mode, all relay parameters are displayed, making the 720 useful in engineering design. In the QC or production modes only a subset is shown, making the 720 ideal for relay manufacture/testing. |
|
|
 |
-
Store and recall test data or setup files.
-
Easy integration with three light towers for pass/fail testing, safety interlocks, and up to 8 ft DUT cabling.
-
Model 720 with 72040A is a direct replacement for Markenrich™ and fully compatible with Markenrich™ test fixtures.
-
Can test series and parallel relay suppression devices.
-
Zero crossing Coil Voltage Control, for AC relays.
|
| - 1 year 23°C ± 5°C (73.4°F ± 9°F): |
|
|  DC Coils: Force
- Range: 30VDC @ 620mA
- Resolution: 10mV
- Accuracy: 0.25%+5mv.
- Range: 130VDC
- (620mA for voltages up to 50V, 100mA above 50V)
- Resolution: 10mV
- Accuracy: 0.25%+20mV
DC Coils: Measured Volts
- Range: 0 -<30VDC
- Resolution: 10mV
- Accuracy: 0.25%+5mv.
- Range 0->130VDC
- Resolution: 10mV
- Accuracy: 0.25%+20mV
DC Coils: Measure Current
- Range 100mA
- Resolution: 10uA
- Accuracy: 0.50%+10uA
- Range: 500mA
- Resolution: 10uA
- Accuracy: 0.50%+20uA
AC Coils: Force
- Range 5-<270VACrms @500mA
- Resolution: 100mV
- Accuracy: 0.25%+100mV
- Frequency: 20 to 999Hz +/-0.1%
AC Coils: Measure Volts
- Range 0-<270VACrms
- Resolution: 100mV
- Accuracy: 0.25%+100mV
AC Coils: Measure Current
- Range: 620mA
- Resolution: 1mA
- Accuracy: 0.50%+1mA
Coil Resistance (autoranging):
- Range: 45K ohms
- Resolution: 0.01ohms
- Accuracy: 0.50%+100mohm
- Temperature Compensated
Contact Resistance:
- Range: 52.40 ohms
- Resolution: 0.1mohm
- Accuracy: 0.5 % +0.2mohm.
Contact Voltage Drop:
- Range: 5.240V
- Resolution: 0.01mV
- Accuracy: 0.25%+25uV.
|
Internal Load:
- 0 to 6VDC (0 to100mA)
- 28V (100mA)
External Load:
Operate/Release/Hold Voltages:
* Same specification as Coil voltages in item A above.
- Operate/Release/Bounce Times:
- Range 0 to 131 or 0 to 262msec.
- Resolution: 2usec or 4usec.
- Accuracy: 0.001%+2usec.
Coil Transient Voltage Testing:
- Range: 200V
- Resolution: 10mV
- Accuracy: 1% +10mV
Diode blocking:
- Range: 100mA
- Resolution: 10uA
- Accuracy: 0.50% +10uA
 Can test time delay relays, both delay on Operate and
 delay on Release. Contains two timing selections: 0 to
65.5 seconds and 0 to 655 seconds
Programmable delay times
- Range: 0 to 20sec.
- Type: coil soak, pickup, dropout, & hold
- Resolution: 1 msec.
Rack mountable.
1-year calibration cycle.
Environment:
- Operating: 0°C to 50°C, (32°F to 122°F)
80% RH.
- Storage: -25°C to 80°C, (-13°F to 176°F)
Input AC line voltage 90 to 260VAC @ 50/60Hz.
Temperature chamber option
–70°C to 150°C (-94°F to 302°F)
Size selections
0.0850 cu. m./0.0283 cu. m. (3.0 cu. ft./1.0 cu. ft.)
Dimensions:
- 42.5 x 40.6 x 13.3 cm - W x D x H
(16.75” x 16.00” x 5.25”)
Weight: 3.63 kg (8 pounds)
Warm-up: ½ hour to rated spec.
1 Year Warranty
|
 |
|
Model 720 Pricing
NOTE: All versions can support up to six pole cards (for 6 pole relay testing) maximum.
|
Model # |
Description |
US List Price |
Model 720-2 |
Includes two single-pole cards, as well as the internal 0 to 130VDC @ 500mA coil supply, the 0 to 6VDC @ 0 to 100mA and 28VDC @100mA contact supplies. |
|
|
External PC Version: [PC not included]
|
$6,995.95 |
|
Embedded PC Version: [Includes 17” CRT , PC keyboard, hard drive, floppy drive, Ethernet, printer port]
|
$8,995.95 |
Model 720-4 |
Same units as above, except includes four (4) pole cards, to allow testing of 4-pole relays. |
|
|
External PC Version: [PC not included]
|
$8,995.95 |
|
Embedded PC Version: [Includes 17” CRT , PC keyboard, hard drive, floppy drive, Ethernet, printer port]
|
$10,995.95 |
|
|
|
Accessories
|
Model # |
Description |
US List Price |
72010 |
Additional Pole Detector PCB’s |
$999.95 |
72020C |
External AC Coil supply to 270VAC [CEC] |
$1,895.95 |
72020E |
External AC Coil supply to 270VAC [Elgar] |
$2,995.95 |
72020H |
External AC Coil supply to 270VAC [Agilent] |
$6,495.95 |
72030A |
DC load, supply 0 to 28VDC, @ 0 to 25A |
$1,999.95 |
*72040C |
Load Switching Unit, to 12.5A 6-pole |
$999.95 |
*72040D |
Load Switching Unit, to 25A 6-pole |
$1,295.95 |
72050 |
Foot pedal and (3) Output Light tower |
$495.95 |
72060 |
Rack mounting Kit |
$99.00 |
72070 |
3.0 cu ft Temperature Chamber. |
$6,600.00 |
72080 |
1.0 cu ft Temperature Chamber |
$5,000.00 |
72090A |
Electronically Simulated relay/verification unit. |
$895.95 |
72090C |
Calibration fixtures |
$1,025.00 |
| |
|
|
*Consult factory for switching units, above 28 VDC and 25 Amp contact loads
|
