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MEGGER DET3TC DET4TC2 DET4TCR2 代替DET5/4R接地电阻测试仪现货
DEscriptION
Megger’s popular 4-terminal ground testing instrumentfamily includes four basic models with different kit variantsfor each that include select accessories for greater testing lexibility. The four basic units are:
Model Description
DET4TD2 Dry-cell battery powered basic 4-terminal tester
DET4TR2 Rechargeable battery powered basic 4-terminal tester
DET4TC2 Dry-cell battery powered 4-terminal tester with selectable test frequencies, greater measurement sensitivity and attached rod technique and stakeless measurement capability
DET4TCR2 Rechargeable battery powered 4-terminal tester with selectable test frequencies, greater measurement sensitivity and attached rod technique and stakeless measurement capability
SPECIFICATIONS
Resistance range: 0.01 to 200 kΩ autoranging
(0.01 to 20kΩ for models DET4TD2 and DET4TR2)
Resistance accuracy:
2P measurements 2% ±3 digits
3P measurements 2% ±3 digits
4P measurements 2% ±3 digits
ART measurements 5% ±3 digits
Stakeless measurements 7% ±3 digits
Maximum probe resistance:
DET4TD2 and DET4TR2
Rp limit: 100kΩ (50V output voltage)
Rc limit: 100kΩ (50V output voltage)
Limits reduced to 50kΩ for 25V output voltage
Limits reduced to 5kΩ for 0.01 Ω resolution
DET4TC2 and DET4TCR2
Rp limit: 200kΩ (50V output voltage)
Rc limit: 200kΩ (50V output voltage)
Limits reduced to 100kΩ for 25V output voltage
Limits reduced to 5kΩ for 0.01 Ω resolution
Earth voltage range: 0 – 100 V
Earth voltage accuracy: 2% ±2 V
2-wire test: Yes, all models
3-wire test: Yes, all models
4-wire test: Yes, all models
ART (Attached Rod Technique): DET4TC2, DET4TCR2
Stakeless test: DET4TC2 and DET4TCR2
Ground current range (with current measuring clamp):
0.5 mA to 19.9 A
Ground current accuracy: 5% ±3 digits
Display:
DET4TD2 and DET4TR2: 3-1/2 digit high contrast LCD
DET4TC2 and DET4TCR2: 3-1/2 digit high contrast LCD, backlit
