Items | PTC-8125M | PTC-8125E | PTC-8125H | PTC-8320D | PTC-8320E | PTC-8320H | PTC-7100 | |
Basic functions | Basic error | ○ | ○ | ○ | ○ | ○ | ○ | × |
Creeping test | ○ | ○ | ○ | ○ | ○ | ○ | × | |
Starting test | ○ | ○ | ○ | ○ | ○ | ○ | × | |
Standard deviation | ○ | ○ | ○ | ○ | ○ | ○ | × | |
Constant test | ○ | ○ | ○ | ○ | ○ | ○ | × | |
Meter constant | ○ | ○ | ○ | ○ | ○ | ○ | × | |
Influence test | ○ | ○ | ○ | ○ | ○ | ○ | × | |
No load test | ○ | ○ | ○ | ○ | ○ | ○ | × | |
Max demand test | ○ | ○ | ○ | ○ | ○ | ○ | × | |
Repeat test | ○ | ○ | ○ | ○ | ○ | ○ | × | |
Multi-functions test | Day time error | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | × |
L/N switching | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | × | |
Communication test | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | × | |
Power consumption test | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ | × | |
High voltage | × | × | × | × | × | × | ○ |