GDHX-9000 Phase Detector

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GDHX-9000 Phase Detector

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Ⅰ General introduction

GDHX-9000 is used for phase detection of power supply on both sides of closed-loop pointcircuit breaker, in order to avoid short-circuit in power system. It is composed of three parts, a transmitter, a receiver and an adjustable insulated rod. The receiver will indicate test result of in-phase or out of phase. It allows two engineers to proceed the test.

Ⅱ Features

Power supply: Maintenance-free battery with large capacity and very low consumption (Lasting for one year after a single charge). Suitable for field work.
Safe design, in accordance with safety standards for mining equipment.
Far measuring distance,up to 200M. Signals can be received through the wall.
LCD show data such as phase position, waveform, and frequency synchronously, which guarantees an overall and safe test.
Extended insulation rod, portable receiver.
Small size and light weight.

Ⅲ Specifications

Detectable voltage range: 0.4-500kV(standard is 6-110kV).
Wireless transmission distance: ≥ 200M of visibility range(customized for more than 300M).
Accuracy: 0.1°
Definition: phase angle ≤30°, In-phase; Phase angle ≥30°, Out of phase.
Working frequency: 45-60Hz.
Net weight: 5kg.
Insulation index:
High withstand voltage nylon material for 2pcs transmitters.Insulation level is 80kV/cm.
Moisture-proof extended insulation rod.The specifications as as below tables.

Table 1 Electrical & Mechanical specifications of insulation rod

Items	Unit	Index
Matin type heat resistance(lengthways)	℃	>200
Shock resistance(lengthways)	MPa/cm	>147
Bending degree(lengthways)	MPa	>343
surface resistivity(after water-immersed)	Ω	>10x1011
volume resistivity (normality)	Ω/cm	>10x1031

Table 2 Withstand voltage test parameters for insulation rod

Voltage (kV)	Length(m)	Withstand voltage (kV)		Time (min)	Result
		Standard value	Test value
6-10	3.2	44		5	Qualified
35	3.2	80		5	Qualified
66-110	3.2	254		5	Qualified
220kV	5.2	40kV/0.3m（section）		5	Qualified

Table 3 specifications of phase detector

Test items	Unit	Test parameters							Remark
		3kV	6kV	10kV	35kV	110kV	220kV	500kV
Starting voltage	kV	<0.4	<0.4	<0.4	<0.4	<0.4	<0.4	<0.4	Qualified
Transmission distance(range of visibility)	m	> 200M							Qualified
Leak current	μA	<30	<30	<30	<30	<30	<30	<30	Qualified
Sound level	dB	>75	>75	>>75	>75	>75	>75	>75	Qualified
DC voltage	kV	3	6	10	35	110	220	500	Qualified
Withstand voltage test	40kV/0.3m(section test)								Qualified
Anti-arc test	kV	3.6	7.2	12	42	130	260	600	Qualified
Anti-short circuit test	kV	3.6	7.2	12	42	88	176	400	Qualified
Temperature test	℃	-30~+45							Qualified
Humidity test	%	95%	95%	95%	95%	95%	95%	95%	Qualified

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