| Specifications | 
        
        
            | Type of Power | 
            Six standard “AA” (IEC LR-6) alkaline batteries | 
        
        
            | Battery Life | 
            12 hours of field operation | 
        
        
            | Excitation Voltage | 
            8 V rms for testing distribution or power transformers and PTs 
            0.5, 1.5, or 8 V ac rms for testing CTs. 
            The excitation voltage is switched automatically if excitation current exceeds a preset value. | 
        
        
            | Test Frequency | 
            55 Hz internally generated providing a universal 50/60 Hz test set | 
        
        
            | Excitation Current Range | 
            0 to 100 mA, 4-digit resolution | 
        
        
            | Turns Ratio Range | 
            0.8 to 10,000, 5 digit resolution | 
        
        
            | Transformer Polarity | 
            Normal or reversed | 
        
        
            | Current (rms) accuracy | 
            (2% of reading + 1 digit) | 
        
        
            | Turns Ratio Accuracy | 
            0.1% (0.8 to 2000) 
            0.15% (2001 to 4000) 
            0.25% (4001 to 10,000) | 
        
        
            | Display full graphics | 
            LCD module 
            adjustable back-lighting 
            wide temperature range 
            128 x 64 dots (21 characters by 8 lines) | 
        
        
            | Transformer Winding Phase Relationship | 
            ANSI C57.12.70-1978 |