H.V ground relay is applied for the protection of factories. HV heavy-duty facilities or the relative apparatus, detecting instantly earth-fault. This non-directional relay is inconbination with ZCT.

- Free form high frequency or surge.
- With self checking switch set, normal operation can be easily
  confirmed at any operation at any time, if need.
- Indicator can detect any wrong-operation after earth fault.
- Easy check-up and maintainance

 Model

1DHG-021N (Non Draw out)
1DHG-021ND (Draw out)

 Rating

11ry operating current
1Frequency
1Auxiliary Voltage
1Ambient temperature

1200mA/100mV(2㏀ Combination)
150/60Hz ±5%
1AC/DC 110V ±20%
1-10℃ to 60℃(with no icing)

 Current setting

1operating
1Current temperature

10.2-0.3-0.4-0.5-0.96-0.8-1.0-Lock(A)

 Time setting Curve

1Over current
1Over current

10.1~0.3sec
10.1~0.2sec

 Burden

1Aux. Voltage

110VA(AC), 6W(DC)

 Contacts

1Output Relay
1Trip & Alarm contact capacity
1111111111111111111111111111111111Make

1111111111111111111111111111111111Break

1Trip 1c, Alarm 1a

1AC 240V 10A (L/R=0ms)
1DC 1000W 0.5sec (L/R=0ms)
1AC 240V 3A (L/R=0ms)
1DC 30W 0.5sec (L/R=0ms)

 Operation time

1KSC 4601 over 130%
1over 400%

10.1~0.3sec
10.1~0.2sec

1Degree Protection

1IP52

 Vibration resistance

1Malfunction

110Hz 5mm double amplitude 30s each in X and Y directions
116.7Hz 2.5mm double amplitude 600s each in X, Y and Z 1directions

 Shock resistance

1Destruction

1300㎨(approx. 30G) 3times each in 3 directions

 Insulation to IEC 255

1Dielectric Withstand
1Insulation resistance at 500V
1Impulse Voltage Withstand
1Surge transient simulator
1Weight

12kV for 1minute between all terminals and case earth
1>1,000㏁
15kV-1.2/50㎲
12.5kV 1㎒/200Ω
12.0㎏