• Omron OTG-N/OTG-D Zero-phase Current Transformer (High Voltage)
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Omron OTG-N/OTG-D Zero-phase Current Transformer (High Voltage)

Omron OTG-N/OTG-D Zero-phase Current Transformer (High Voltage)

The OTG-N (through type) and OTG-D (split type) are high-accuracy zero-phase current transformers supporting ground-fault relays.

Key features

  • Through-type and split-type models
  • Rated primary currents 150 A to 2,200 A
  • Rated voltage 6,600 V, indoor use
  • Split type allows retrofit on existing feeders
  • Optional test terminals for OTG-D

Specifications

Rated voltage 6,600 V
Max. circuit voltage 6,900 V
Rated zero-phase primary current 200 mA
Frequency 50/60 Hz
Standard JIS C 4601 (through type)
Applicable relays K2DG, K2GR, K2GS, K2GF, K2GA, AGF
Source Omron CSM_Ground-fault_Protectors_DS_J_3_4 (Japanese ed.), p. 1, 4
OTG-N40 Type: Through type (epoxy mold) | Rated current: 150 A | Inner diameter: 40 mm
OTG-N68 Type: Through type (epoxy mold) | Rated current: 400 A | Inner diameter: 68 mm
OTG-N104 Type: Through type (epoxy mold) | Rated current: 600 A | Inner diameter: 104 mm
OTG-N156 Type: Through type (epoxy mold) | Rated current: 1,000 A | Inner diameter: 156 mm
OTG-N245 Type: Through type (epoxy mold) | Rated current: 2,200 A | Inner diameter: 245 mm
OTG-D52 Type: Split type | Rated current: 200 A | Inner diameter: 52 mm
OTG-D77 Type: Split type | Rated current: 400 A | Inner diameter: 77 mm
OTG-D112 Type: Split type | Rated current: 600 A | Inner diameter: 112 mm
OTG-D52T Type: Test terminal (option) | Rated current: - | Inner diameter: For OTG-D52
OTG-D77T Type: Test terminal (option) | Rated current: - | Inner diameter: For OTG-D77
OTG-D112T Type: Test terminal (option) | Rated current: - | Inner diameter: For OTG-D112
Monitoring RelaysOmron
11 product codes available in this family
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Omron OTG-N/OTG-D Zero-phase Current Transformer (High Voltage)

Brand Omron·Monitoring Relays

Available part numbers (11)

OTG-N40, OTG-N68, OTG-N104, OTG-N156, OTG-N245, OTG-D52, OTG-D77, OTG-D112, OTG-D52T, OTG-D77T + 1 more — see full table ↓

How to order

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Product codes & specifications
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Product codeSpec
OTG-N40Type: Through type (epoxy mold) | Rated current: 150 A | Inner diameter: 40 mm
OTG-N68Type: Through type (epoxy mold) | Rated current: 400 A | Inner diameter: 68 mm
OTG-N104Type: Through type (epoxy mold) | Rated current: 600 A | Inner diameter: 104 mm
OTG-N156Type: Through type (epoxy mold) | Rated current: 1,000 A | Inner diameter: 156 mm
OTG-N245Type: Through type (epoxy mold) | Rated current: 2,200 A | Inner diameter: 245 mm
OTG-D52Type: Split type | Rated current: 200 A | Inner diameter: 52 mm
OTG-D77Type: Split type | Rated current: 400 A | Inner diameter: 77 mm
OTG-D112Type: Split type | Rated current: 600 A | Inner diameter: 112 mm
OTG-D52TType: Test terminal (option) | Rated current: - | Inner diameter: For OTG-D52
OTG-D77TType: Test terminal (option) | Rated current: - | Inner diameter: For OTG-D77
OTG-D112TType: Test terminal (option) | Rated current: - | Inner diameter: For OTG-D112

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