JR-2 Current Interrupter
Cat. #12830
Price $1,900.00
Features:
- 100 amp AC/DC interrupter
- Crystal controlled timing
- Rechargeable battery
- Immediate or delayed interrupting operation
- Low battery indicator
- Capable of re-synchronization.
- Synchronization better than 1 millisecond.
General Information
MCM's Model JR-2
is a high power interrupter with 100 amperes DC interrupting
capability. The JR-2 and JR-1 (35 ampere current
interrupter) are of compatible "mix" when being used for
multiple interrupter tests.
Specifications:
Display:
Custom LCD, wide
operating temperature range, -20°C to +85°C (-4°F to +185°F)
with enhanced response time at extremely low temperatures.
Large(.7" high) digits plus equipment status annunciators.
Logic/Recall:
CMOS Microprocessor, 8-bit; EPROM operating system. EEPROM,
initializes prior setting on power up.
Keyboard:
Sealed, Tactile feedback; 4x4 Matrix; "0-9";
"?"; "ENTER"; "CLOCK SET"; "START SET"; "ON CYCLE"; "OFF
CYCLE" Keys.
Cycle Range:
Keyboard Programmable: .1 to 999.9 seconds in .1 second increments either "ON" or "OFF" cycle.
Auto Turn-on:
Present interrupt start time eg. 0700
Night Latch:
The JR-2 supports 24-hour timing and a scheduled relay
closure period. For example, a night latch time of 1700
could be entered from the keypad, and a start time of 0700.
The unit will operate normally until 1700, at which time
the relay will close and will stay latched until 0700 the
next morning, then the normal interrupt cycle will begin
again. This feature facilitates full CP polarization during
hours when the survey crews are absent.
Accuracy:
Timing: 0.5 second maximum variation in 24 hours.
Synchronization to within 1 millisecond.
Relay Start Position:
Is in closed position.
Relay:
Mercury Plunger type:
| DC |
AC |
| 100 A @ 48 VDC |
100 A @ 120 VAC |
| 75 A @ 75 VDC |
90 A @ 240 VAC |
| 50 A @ 120 VDC |
60 A @ 480 VAC |
| 30 A @ 240 VDC |
40 A @ 600 VAC |
Battery:
Sealed, rechargeable, 12 Volt, 6 A/H Charging plug included.
Battery Life:
Use dependant, example:
1 second off - 4 seconds on = 50 hours
4 seconds off - 1 second on = 15 hours
Size:
10" H x 10.75” W x 5” D, (26 x 28 x 13 cm)
Weight:
13 lbs. approx.
Options:
TCXO: Model JR-2Y: super accurate, temperature-compensated
crystal/oscillator (1ppm). Timing remains constant through a
temperature range of -40°F to 140°F. The crystal controlled
clock operates at 1 MHz and is calibrated to have a maximum
drift of only 1 part per million through-out the above
temperature range. (Approximately .5 sec. in six days).