L,M,N Series Glove – Sleeve Testing Machines
DIGITAL MICROPROCESSOR CONTROLS and METERING!
The machine is capable of testing gloves 10.5 inches through 18 inches long in accordance with the latest ASTM D120 and F496 standards. Clothespin type holders are provided which do not pinch the gloves or sleeves. The center to center spacing is 9 inches to accommodate 40 K.V. gloves. Models are available to test one to twenty eight lineman’s gloves or sleeves.
The machine is capable of testing all standard sleeves in accordance with the latest ASTM D1051 and F496 standards. Sleeves can be tested by the VON hammock method using the clothespins provided and the two 2″ diameter spacers used to eliminate sharp bends in the sleeves. With –D models this method allows testing of only half as many sleeves as gloves. With –W models this method allows a full load of sleeves. As many sleeves as gloves can also be tested by the straight method using one of the freon replacement fluids in the bottom of the tank.
LINE JUMPER TESTING:
One or two line jumpers may be tested in the test tank in place of gloves or sleeves.
The current of each glove/sleeve being tested is continuously monitored by the microprocessor control system. The active current leakage as well as the peak current is displayed on an LCD display both digitally and with a bar graph.
HIGH VOLTAGE TEST TANK:
The tank is constructed of 12 gauge stainless steel. The outer lip and all edges are smooth and rounded to a .75 inch radius to eliminate corona from the tank at voltages to 50,000 volts A.C. and 100,000 volts D.C. A one inch drain valve is provided in the bottom of the tank to drain water.
Approximately 9 cfm of air flow is directed into each glove/sleeve to remove the ozone generated inside it while testing. The exhaust manifold at the rear of the machine pulls air across the surface of the water through an inlet which is the length and even with the top of the high voltage tank. This removes ozone generated on the outside of each glove/sleeve.
Eyebolts are provided in the top for lifting by a crane. An interlocked access door is provided to the testing area at the end opposite the power supply and control area so the operator can go inside the machine for cleaning and maintenance. Fluorescent lamps are provided inside the unit and are wired so they can be operated when the unit is turned off. An interlocked front access door is provided in the power supply and control area.
Each glove is filled through a .375″ tube to permit simultaneously filling each glove within 30 seconds.
A menu based system provides all controls from the front control panel. All standard tests come predefined for the user. These predefined tests set all the machines settings and automatically run the test on the specified class of glove or sleeve. There are also 4 user defined test modes available, as well as a mode for manual control of the entire system.
All LED light indicators operate in a fail safe mode by being lighted at all times. The lights flash when indicating. A red “HIGH VOLTAGE FAILURE” light and an amber “OVERCURRENT” light are provided on the carrier just above each glove. A red ” FAIL” light and a green “TEST COMPLETE” light are provided on the control panel. The LCD current display shows the current leakage current, as well as saving the peak current. After a failure the LCD display also indicates which gloves failed.
The operating cycle begins after the operator selects the new type of gloves to be tested from the menu, which automatically adjusts the depth, water fill level, test time, voltage, current limit, blower speed and exhast fan speed with a single setting. If the type is not changed from the last test, then no menu selection is required. Next the items to be tested are mounted in the machine. Then the operator simply pushes the “START” button. The machine can be fully loaded with material or just one item can be tested. Gloves will be simultaneously and automatically filled with water to the proper level. The water filling can be bypassed at any position that does not have a glove or on all positions when testing sleeves. The gloves/sleeves will be lowered into the high voltage tank.