IDEAL INDUSTRIES INC.
TABLE OF CONTENTS Title Introduction Precautions and Safety Information Safety Information Specifications General Specification Voltage Specifications % Voltage Drop Specifications Impedance Specifications Diode / Continuity Specifications Performance Verification Standardizing a Branch Circuit Table 1, Standardized Data Table 2, Performance Verification Test Calibration Return to Ideal Industries, Inc Page 1 1 1 2 2 2 2 2 2 3 4 5 5 6 6 Document: Page 2of 10 September1, 2009
Introduction Warning To avoid shock or injury, do not perform the verification tests or calibration procedures described in this manual unless you are qualified to do so. The information provided in this document is for the use of qualified personnel only. Caution The 61-150 and 61-160 serials contain parts that can be damaged by static is charge. Follow the standard practices for handling static sensitive devices.
Table 1, General specifications Display Operating Range Voltage RMS Ohms Function Percentage of Voltage Drop Voltage Drop Ground to Neutral Voltage GFCI current Over-range Indication on all functions Operating Environment, Relative Humidity Storage Environment: Case Construction: Safety OLED Graphics Display 108 to 264VAC 85 to 132VAC (61-165), 85 to 265 (61-164) 0.00 Ω to 299 Ω 0.1% to 50.0% 0.1V to 50.0V 0.0V to 24.
PERFORMANCE VERIFICAITONS Perform the following analysis. If the meter operates within the specifications listed in Table 2 the meter is functioning correctly. If the meter does not conform to any of the listed limits unit should be returned to Ideal Industries, Inc for calibration. Note: the accuracy of this performance test is affected by the assigned or standardized values. The unit is initially set up in IDEAL Industrials testing lab in San Diego Ca.
Measured Voltage Drop Method Before we get into the standardization method of a branch circuit it would be good to go over the difference of Voltage drop {VD} verses % of Voltage Drop {%VD}. In a branch circuit there is a Current* Resistance {IR} voltage drop across the wire. This is due to the resistance of each conductor as a function of wire size, length, and device connections. For most branch circuits the resistance or impedance stays constant while the current varies.
The %Vd at 8 amps would be • %Vd= (Vd/Vno-load) x 100 • %Vd= (5/120) x 100 • %Vd= (..0416) x 100 • %Vd= 4.16 It should be noted that the higher the current the large the IR voltage drop and % of Voltage Drop. To check the accuracy of the UUT at 12amp, 15amp and 20 amps we will use the impedance as found with the 8 amp load of rZ = 0.625. With this impedance we can calculate the VD and % VD for any load current. So for a 12 amp load with a no load voltage of 120V the %VD is : • Vd= I x R • Vd= 12 x .
Steps 1 2 3 4 5 Load No-Load Load H-N, Load H-N, Load H-G, Load H-G, Measurement V= No load Voltage H-N V1= Voltage H-N V2 =Voltage H-G V3=Voltage H-N V4=Voltage H-G Current N/A To calculate the impedance of each conduct enter the values from the table above and calculate the impedance each conductor Calculated Impedance rZ1=(V-V1)/I rN=(V2-V1)/I rG=(V3-V4)/1 rH1=(rZ-rN)1 1 rZ = Total branch circuit Impedance rN = Impedance of neutral conductor rG = Impedance of the Ground wire rH= Impedance of the Hot
A comparison of the Standardized Measured Values to the SureTest Readings should yield results in accordance to the range and accuracy specification listed in Table 2.
Calibration and calibration adjustment procedure The SureTest 61-160 Series cannot be field calibrated. If Calibration is required please call 800-435-0705 for return instructions.
